Methodologies for Data Migrationto Dell Fluid Data ArchitectureA Dell Technical White PaperExecutive summaryThe dictionary...
Table of ContentsAbout the Authors                     Dell data migration best practices.  .  .  .  .  .  .  .  .  .  .  ...
Dell data migration best practices: Dell has evolved from a storagereseller to a storage innovator. We did it by starting ...
Dell Compellent                               PowerVault SANs                              PowerVault™ NX3500             ...
If you’re thinking about new storage solutions and complexities around data migration,consider the following key factors a...
Planning                                      •	 Hardware vs. Software: Some                                          Plan...
Data Migration Expertise: Dell experts have migrated petabytesof data worldwide ranging from SAN, NAS and file systemsmark...
VMware                                       or virtual. The image of the source    Migrating from legacy storage vendors ...
LVM                                                Symantec volume managerLVM is disk management functionality            ...
HP-UX                                            appliance provides multi-protocol     Mirror/UX, a licensed product from ...
File level                                      CIFS                                                Dell Migration Service...
Conclusion: Dell Consultants work closely with industry-                                                              lead...
Upcoming SlideShare
Loading in …5
×

Dell Data Migration A Technical White Paper

3,966 views

Published on

A successful data migration process can be used for a one-time migration, or as a standard procedure for future migrations employing a consistent, reliable and repeatable methodology incorporating planning, tool implementation and validation. Dell data migration services can help. This whitepaper explores the Dell storage portfolio, Dell methodologies for migration and the use cases for migrating customers over to Dell Storage.

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
3,966
On SlideShare
0
From Embeds
0
Number of Embeds
34
Actions
Shares
0
Downloads
117
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Dell Data Migration A Technical White Paper

  1. 1. Methodologies for Data Migrationto Dell Fluid Data ArchitectureA Dell Technical White PaperExecutive summaryThe dictionary entry for “challenging” could very well The impact of explosive data growth is felt at every leveldescribe enterprise storage migrations. Complex and often of the enterprise. Typically, data migrations and storageproblematic, data migrations challenge even the most provisioning are manual processes that consume IT resourcesseasoned IT administrators with narrow downtime windows, while disrupting users and applications. Backups takerisk of data loss, business-critical application availability, 24/7 increasing amounts of time to complete, and they are moreuser access requirements, and other factors. IT departments costly to maintain. Utilization rates vary dramatically, as somemay not have the needed skill set or may not want to spend storage arrays or file servers run out of capacity while unusedvaluable resources migrating data. In addition, data centers capacity languishes on others. Users and applications aremay support multiple operating systems like Microsoft® statically mapped to physical devices, creating configurationWindows®, UNIX® and Linux® technology, while the storage challenges whenever changes occur in the environment.ecosystem may also include hardware from more than one And many traditional storage infrastructures (from mergersvendor. Inflexibility of traditional storage infrastructures can and acquisitions) have evolved haphazardly without a solidcomplicate matters even further. strategy for consolidating.
  2. 2. Table of ContentsAbout the Authors Dell data migration best practices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Noman Chaudhry, Storage portfolio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Global Practice LeadNoman Chaudhry is the Global Key migration factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Practice Lead for Data Migration& Protection Practice at Dell Data migration methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Services and has over fifteenyears of experience designing, Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6implementing and supportingdata migration & disaster Business impact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6recovery solutions. Nomanjoined Dell Inc. in 2005, has a Data collection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6B.S in Electrical & ElectronicsEngineering from California State Data Migration Expertise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 University, Sacramento and lives Block level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7in San Jose, CA with his family. FC array-based migration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Seth Paskin, Host-based migration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Product ManagerIn his 12 years in the IT industry, VMware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Seth Paskin has seen all aspectsof consumer and enterprise Windows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8services from support and deliveryto quality and development. He LVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9believes that value is created bypeople communicating effectively Symantec volume manager. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9about needs and how to solvethem. Seth is the Product Manager Solaris. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9for Enterprise Deployment in theServices & Solutions Group. AIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 HP-UX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Chuck Bridges, Linux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . .Services Product ConsultantIn over 30 years of IT marketing Appliance-based migration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10experience, Chuck Bridgeshas written about everything Backup and recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10from the desktop to the datacenter. He is currently a Product File level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Consultant on the GlobalServices Messaging team. NAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 CIFS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Audience: rsync . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11This paper is intended forDell customers, partners and Conclusion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12employees who want to learnabout the migration tools andmethodologies available tomigrate over to Dell storagefrom competitive and legacytechnologies.2
  3. 3. Dell data migration best practices: Dell has evolved from a storagereseller to a storage innovator. We did it by starting fresh, buildingthe right storage architecture without the burden of legacyintellectual property (IP), and designing solutions based on whatcustomers truly wanted.It wasn’t just about data growth; Storage portfoliocustomers need to know how they Enterprise data volumes continue tocould respond to growth and constant grow exponentially while IT budgetschange. They wanted to shift their focus continue to shrink. Dell helps customersfrom keeping the lights on to future tackle these challenges by standardizingstrategy — from operation to innovation. IT infrastructures, simplifying operationsWith this in mind, Dell services put and automating processes. Efficienciestogether a comprehensive data gained through virtualization,migration strategy to help customers automation and consolidation will helpmigrate from their legacy storage to the your business prepare for future growthDell Fluid Data™ architecture. while saving time and resources.Dell Services has a stable, proven Dell can help you:process for performing data migrations • Optimize the computer, processor,backed by a wide range of capabilities networking and storage resourcesand technologies. This means we can already in your IT infrastructureadapt to any customer environment • Increase overall utilization bywhile maintaining the integrity of best- eliminating isolated or strandedpractice implementation. Whether resourcesyou’re moving accessible data off- • Reduce total cost of ownership (TCO)hours, business-critical data during a through standard-based solutions,tight maintenance window, or need simplified operations, virtualizedminimal disruption for a mission-critical storage and seamless scalabilityenvironment, Dell Services has the right • Improve IT performancesolution for the right value. Backed bythe experience of thousands of global Dell’s Fluid Data™ architecture,customer engagements, Dell Services for comprised of Dell™ Compellent™, Dellplanning, migrating and validating data EqualLogic™ and Dell PowerVault™migrations can help you simplify your storage solutions — as well as othermove to the storage platform that’s right Dell storage tools and utilities — canfor your business. help organizations of any size realize the full value of their IT investments. ItThis whitepaper describes Dell’s can also protect vital enterprise data,expertise in data migration across a ensuring high business continuity whilerange of technologies and use cases. maintaining flexibility and scalability.3
  4. 4. Dell Compellent PowerVault SANs PowerVault™ NX3500 Dell PowerVault iSCSI and Fibre Channel arrays are the ideal SAN solution for Utilizes Dell™ Fluid File System and the entry-level storage consolidation PowerVault SAN back end for Internet requiring high availability, high SCSI (iSCSI), CIFS and NFS access to performance and business continuity block and file data — enabling a single without sacrificing ease of use and file share to scale up to the capacity reliability. Designed for flexibility, the of the SAN array deployment. With newest PowerVault SANs support PowerVault™ NX3500, you can help a range of drive types, enclosures prevent the data silos and server sprawl and RAID levels — all within a single caused by an increasing amount ofDell Compellent Storage Center delivers array. With high-speed iSCSI and Fibre data (email, video, MP3 user homean all-in-one storage solution that Channel interfaces, PowerVault arrays directories). Start small and still enjoyalways puts data in the right place at provide multigenerational/multiprotocol the value of high performance, unifiedthe right time for the right cost — and single management interface and storage. And as your storage needsdynamically adapts to meet changing support. grow, you can dynamically add orbusiness needs. modify block and file capacity without Network Attached Storage (NAS) disrupting existing applications andDell Compellent storage controllers are storage systems.also designed to deliver high availability.Redundant and hot-swappable powersupplies and cooling fans help ensurenonstop operation when problemsarise. These controllers also offer the Grow block and file capacity non-flexibility to meet changing enterprise disruptively with the EqualLogic™requirements. Customers can select FS7500, the only scale-out unifiedeither one or two controllers per SAN, storage architecture optimized forand then use Fibre Channel, FCoE midsize and smaller deployments. Theand/or iSCSI connections to servers, Dell EqualLogic FS7500 adds network-including the latest iSCSI and FCoE attached storage (NAS) capability to theinterconnects. The controllers connect EqualLogic product line to provide ato any open-system servers without the high performance, scalable and unifiedneed for dedicated agents. storage solution. The FS7500 is powered by the Dell Fluid File System (Dell FluidEqualLogic FS), Dell’s high-performance, clustered, and network-accessible file system. Dual active-active controllers, redundant power supplies and fans, and battery- backed cache make the FS7500 an idealDell EqualLogic™ arrays are virtualized solution for NAS deployments requiringiSCSI SANs that combine intelligence high availability and reliability.and automation with fault tolerance toprovide simplified administration, rapiddeployment, enterprise performance,reliability and scalability. EqualLogic isan excellent choice for performanceand capacity-intensive applications.The virtualized, modular EqualLogicarchitecture allows IT managers topurchase only the storage they need,when they need it.4
  5. 5. If you’re thinking about new storage solutions and complexities around data migration,consider the following key factors and how Dell Data Migration consultants can help:Key migration factors Key factors Description Dell capabilities Performance Balances network bandwidth A diverse toolset where and system overhead with migration can be throttled migration performance accordingly to strike a metrics balance of migration speed and application/network performance Heterogeneous Deploys the right migration A holistic vendor-agnostic hardware and OS tools that minimize multi- migration solution that spans vendor restrictions in complex multiple OS and supports environments numerous storage platforms Application Identifies and manages A choice of offline or online downtime varying degrees of application migration depending on the criticality and acceptable customer requirements levels of downtime Scalability Factors local and global data Appliance- or software-based growth into terabyte and solutions that can be used for petabyte migrations routine migrations in the data centerData migration methodologyA successful data migration process can be used for a one-time migration, or asa standard procedure for future migrations employing a consistent, reliable andrepeatable methodology incorporating planning, tool implementation and validation.The chart below shows a typical data migration workflow that can be used as areference.Dell data migration game plan Pre-production Planning Migration Validation Cutover TestingŸ Define migration Ÿ Setup testing Ÿ Setup final Ÿ Collect Ÿ Move goal migration migration migration application toŸ Define migration environment environment statistics the target requirement Ÿ Validate HW/SW Ÿ Install migration Ÿ Verify the storageŸ Understand and migration software completion of environmen business impact tools Ÿ Perform the migration based onŸ Data Collection Ÿ Perform migration based Ÿ Validate cutover planŸ Define HW/SW migration testing on plan application Ÿ Create final and tools based on plan functionality reportŸ Create migration Ÿ Collect and Ÿ Create migration Ÿ Run the new plan validate data report environment Ÿ Update final during the migration plan defined time frame Ÿ Retire the previous environment5
  6. 6. Planning • Hardware vs. Software: Some Planning is critical for a successful migration tools require plugging the data migration. Dell Migration Services appliance into the environment, while considers the following factors when others are based on OS filter drivers. evaluating a data migration project: We offer a wide range of choices for migration use cases Business impact • License: Cost of the license to be The impact should be clearly explained considered to stakeholders so they have the appropriate expectations. Below are Migration project plan some factors to be considered in this Once the aforementioned factors are process: defined and agreed upon, the Dell • Online or offline methodology planning team documents all the • Applications impacted discoveries and planning steps in the • Workload distribution between master migration project plan. This plan customer and Dell evolves as the project progresses. • Backup of data to be migrated in place • Required staging of storage / Proof of concept (POC) hardware POC is a significant first step in the overall execution process as it helps Data collection set up the baseline for the migration Understanding the existing environment project. It establishes an initial test plan is key to successful planning. The to validate the co-operative migration following information should be plan between the customer and Dell collected: Migration Services. Once the POC is • Server information (OS version, successfully completed, Dell Migration applications, firmware, drivers, etc.) Services and the customer agree on • Storage environment (topology, data the viability of the validation and the size, performance, etc.) execution of the migration project plan • Data classification & tiering of apps to begins. define priority • Existing issues Validation • Users and business segments involved Once data is fully migrated to the target, migration validation takes place. Migration tools identification Validation is one of the most important Dell Migration Services uses multiple post-migration tasks and includes the tools during the process. To select the following areas:Note: right tools, we consider the following • Data completeness: All data definedFor a fee, Dell Migration Services also factors: for migration on the source areprovides consulting services to assessthe customer migration environment. • Performance: This refers to the speed migrated to the target environment of the migration — a combination • Data integrity: The data itself, as well of the tool’s software architecture, all data attributes, dependencies, migration bandwidth, source/target security, etc. are successfully migrated capabilities, application performance, • Data functionality: migrated data is etc. mapped to the right application and • Online or offline: Depending on functions correctly and as expected customer requirements, we choose tools that offer migration while the Cutover (Deployment) LUNs are either online or offline Typically, legacy environments remain • Roll-back capability: Software that running until extensive validation is may provide the capability to roll back performed on the new storage. Once data in case the migration runs into validation is complete, customer is any issues cutover to the new storage.6
  7. 7. Data Migration Expertise: Dell experts have migrated petabytesof data worldwide ranging from SAN, NAS and file systemsmarketed by a variety of vendors. Our Data Migration Servicespractice takes the burden of migration responsibilities off yourshoulders and puts it in the capable hands of expert storagemigration consultants.We have the experience and proven vary depending on the environment,methodologies to deal with any migration performance is roughlycomplexities your particular migration 500GB/hr. Currently, Thin Import onlymay present. works over fibre channel, which means the source array and destination CMLDell consultants can help with: array must have fibre channel FE ports. The current or planned host connectivityBlock level method can be different, but the import process can only be performed overFC array-based migration fibre channel.Thin Import is a built-in feature ofStorage Center on Compellent arrays. Host-based migrationData from external storage arrays, which Array-based migration solutions do notare typically thick-provisioned, can be solve all data migration scenarios. Inmigrated to thin-provisioned volumes some cases, host-based tools, whichon the Compellent drive. No additional are OS specific, are an effective way tolicenses are required. migrate data. Dell Migration ServicesThe Thin Import process works at have verified and tested the followinga block-level, using synchronous tools for multiple OS environments.replication to import the data. All Each host-based tool has stipulationsblocks are read on the source LUN and limitations around migrating data.and then written to the destination Dell Migration consultants will discussvolume on the Compellent with blocks the details of each solution with yourconsisting of all zeroes being omitted. team during the planning phase.The result is a thin-provisioned volumeon the Compellent. Although it can Note: For security reasons, Thin Import is primarily an offline activity. Zoning for Thin Import Fabric A Fabric B CLARiiON SPA0, CML Controller 1 Port 1 CLARiiON SPB0, CML Controller 1 Port 2 CLARiiON SPB1, CML Controller 1 Port 1 CLARiiON SPA1, CML Controller 1 Port 2 CLARiiON SPA0, CML Controller 2 Port 1 CLARiiON SPB0, CML Controller 2 Port 2 CLARiiON SPB1, CML Controller 2 Port 1 CLARiiON SPA1, CML Controller 2 Port 2 Important 1. This is an example only - actual ports on source and destination arrays may vary 2. Do NOT just configure and enable these zones - follow step-by-step instructions or data loss may occur.Fig 1: Sample FC connectivity of Dell CML array with a third-party array7
  8. 8. VMware or virtual. The image of the source Migrating from legacy storage vendors contains the server’s system state (the has never been easier for customers server’s configured operating system running VMware Enterprise and and applications) and all of the source Enterprise Plus editions with the built- server’s data. in tool called Storage vMotion. Storage vMotion eliminates the need for service The Double-Take ‘Move’ function disruptions with live, automated uses data replication to allow users to migration of virtual machine disk files continue accessing and changing data from legacy storage to a new Dell during the migration. As changes are destination. Non-disruptive migration made on the source, replication updates of virtual machine disk files to different the image of the source stored on the classes of storage enables cost-effective target in real time. Double-Take Move management of virtual machine disks does not replicate the entire file, only based on usage and priority policies as the file changes. When you’re ready part of a strategy for tiered storage. to cutover to the new server/storage, Double-Take Move then applies the source system state and after a reboot, Virtual Machines makes the source available on what was App App App the target server hardware. OS OS OS Migrating data to a new storage array often provides a good opportunity to migrate or upgrade to the latest Dell ESX Server PowerEdge™ server platforms as well (see Figure 3). Double-Take software includes tools such as Full-Server Failover (FFO) for server migrations that remove Windows hardware driver dependencies, enabling administrators to migrate entire systems — including the system identifier (SID), registry, system files and applications — through a GUI while those systems are still Storage VMotion running (see Figure 3). Once the synchronization is complete, you can shift the new server and storage Fig. 2: Sample Storage vMotion platforms into production. connectivity of Dell storage array with a third-party array Windows Server Delivered on the Windows platform, Dell Migration Migration Services uses Double-Take as Dell PowerEdge 2650 Dell PowerEdge R900 with Microsoft Exchange with Microsoft the solution of choice for a majority of and Double-Take software Exchange and customers. Double-Take software Double-Take is a comprehensive Data workload migration solution that allows Migration TM Production Dell EqualLogic an entire server, known as a source, to Dell/EMC Cx300 PS Series be moved by mirroring an image of Fibre Channel SAN iSCSI SAN that source to the target. The source Fig. 3: Sample Double-Take use cases: and target servers can be physical Server or array migration8
  9. 9. LVM Symantec volume managerLVM is disk management functionality One of the most widely used volumebuilt into many UNIX/Linux platforms. managers in the industry today isEach OS has its own nuance around VxVM from Symantec, which is partprovisioning disks within LVM but one of the Storage Foundation Suite.common denominator among them is Symantec Volume Manager (VxVM)that it provides an abstraction level layer is an online storage managementbetween the OS and disks — whether tool that provides a logical volumeit’s local, on a DAS, or SAN. From a data management layer, which overcomesmigration standpoint, a typical LVM the physical restrictions of hardware diskprocess involves setting up a mirror of devices by spanning volumes acrossthe data on the legacy storage volumes multiple spindles. Through the supportto the new volumes. The next step is to of RAID redundancy techniques (insynchronize the new volumes. Once data migration’s case RAID 1), VxVMthe sync is complete, the mirror can be enables migration of volumes acrossbroken at cutover. This usually involves heterogeneous storage arrays.detaching the source volumes. Some Mirroring can be set up with the aid ofvolume management software includes the VxVM GUI called VMSA or throughcommands to automate this process. command line. Dell Migration ServicesWith close to no downtime, mirroring is strongly recommends using commanda great way to migrate data over to Dell line for mirror-based migration since itstorage. offers more control over what is being executed behind the scenes. A known Veritas Volume Manager limitation of Symantec Volume Manager Solaris AIX Linux HP-UX is that RAID 5 volumes are inferior candidates for VxVM-based migrations and other tools must be explored to accomplish the task. Solaris Solaris Volume Manager provides mirror functionality across arrays. To administer Solaris Volume management, use the GUI (called Solaris Management Console) or the command line. AIX Note:Source Array: Target Array: AIX LVM is built into the OS and For simplicity and standardization, LUNDell|EMC Compellent leveraged for cross-platform storage is considered an array level object,Fig. 4: LVM-based array migrations are migrations as long as the source disks while volume is an LVM term. OS specific are under the control of the LVM. Multiple LUNs can constitute a volume.9
  10. 10. HP-UX appliance provides multi-protocol Mirror/UX, a licensed product from (iSCSI, FC) block level and synchronous HP, provides the functionality to mirror mirroring across heterogeneous volumes and can be extremely useful storage. It also supports a diverse mix for data migrations with a stipulation of operating systems, which makes that the source volumes are not striped migration seamless and pain free for within the logical volume. The output the customers since no downtime below illustrates a scenario that would is required for the duration of the not allow for LVM-based migration. migration. hp5:/home/noman# lvdisplay -v /dev/ There are two downtime windows vg5/mirror_1 | more required, however: one upon insertion --- Logical volumes --- of the appliance, and the second upon LV Name /dev/vg5/mirror_1 cutover to the Dell storage. VG Name /dev/vg5 LV Permission read/write LV Status available/syncd Mirror copies 0 Consistency Recovery MWC Schedule striped LV Size (Mbytes) 1008 Current LE 252 Allocated PE 252 Stripes 3 Stripe Size (Kbytes) 128 Original IO path Source Array Bad block on Change IO path to NSS Allocation strict Activate Mirror IO Timeout (Seconds) default FalconStar NSS Additionally, the source and target disks must be part of the same volume group 1. Prepare Zoning for indirect access Target 2. Move IO path: Downtime (Reboot) to proceed with a data migration. Array 3. Activate Mirror while online 4. Change Mirrorrole while online 5. Remove mirror while online Linux Fig. 5: A simplified NSS Gateway Linux LVM is built into the OS and solution from FalconStor leveraged for cross-platform storage Software would entail this setup migrations as long as the source disks are under the control of the LVM. If LVM is not implemented, Double-Take Backup and recovery is another choice for supported file One of the most traditional methods of systems. performing data migration is backing up the data to disk or tape, setting Appliance-based migration up new storage and restoring to the Dell Migration Services has partnered new storage. This is also the most with FalconStor Software where time consuming way to migrate data previously mentioned tools and because of the downtime required for use cases may not fit the customer the duration of the backup, and then high performance data migration another downtime needed for restore. requirements. Using NSS Gateway This is usually considered a method of Appliance Software, which runs on a last resort for migrating data. two-node Dell R710 cluster server, Dell can migrate any existing third-party SAN storage over to Dell storage with minimal downtime. The HA FalconStor10
  11. 11. File level CIFS Dell Migration Services has partneredNAS with Quest Software for CIFS/Windows-NAS, or file data migration, involves based data migrations. The Questcreating a copy of the data and moving Secure Copy technology enables Dellit from one array/file server to another Services to offer fast, proven enterprise-with little disruption to the production class data migration. This host-basedenvironment. The optimal data data migration software eases themigration tools for NAS not only migrate pain often associated with typical NASthe data and the directory structure but migrations. The first sync betweenalso the file attributes and the ACLs over source and target can be online, andto the target storage. Typical migration the I/O operation can continue to theuse cases around NAS include: source array. For a final sync, however,• Consolidating multiple Windows the I/O operation must to be ceased. servers onto a common platform to reduce server sprawl NOTE: This final sync can take up to 20%• Consolidating multiple UNIX-based of the first sync time and requires total exports (from multiple UNIX hosts) downtime on the source array shares onto a common platform being migrated. If an array has a NAS• Creating a cross-platform file appliance attached and additional hosts, sharing (Windows and UNIX servers) those additional hosts do not need to environment that scales beyond come down to migrate shares on the the limit of traditional File Shares NAS appliance. (Windows) and UNIX-based exports rsyncDell Migration Services offers tools for Long established in the UNIX world,CIFS- and NFS-based migrations. rsync is an open source OS- and storage-agnostic tool that remains a top choice among storage administrators.NAS: NFS amd CIFS Dell uses this powerful OS built-in utilityWindows Systems UNIX Systems for all NFS-based migrations.Ethernet CIFS NFSFig. 6: A typical NAS migration involves CIFS & NFS11
  12. 12. Conclusion: Dell Consultants work closely with industry- leading partners to help organizations create an agile storage infrastructure that will improve response to rapid data growth. Many of the challenges faced by Turn to Dell Data Migration Services today’s IT organizations come from the next time you need to migrate data. Our disruption incurred when moving data. experienced strategic consultants can Data migration, storage consolidations help you migrate your data safely and and technology upgrades take longer quickly, without interruption to your and require more IT overhead and day-to-day business operations. expertise. Tiering active and inactive data can mean that storage efficiency The result will be a state-of-the-art, features are underused, while backup optimized and responsive storage system windows take longer and require more ready to meet your business objectives offsite media. Additionally, uneven — today and in the future. Regardless of growth leads to constant storage re- the business model, your commercial provisioning and capacity balancing — success is built around providing service tasks that require operational downtime. levels that meet and exceed your employee and customer demand. Dell Our Data Migration Services practice Storage Solutions and Services provide enables transparent data migration to faster time to value and greater return Dell storage systems without affecting on your infrastructure investments. applications or users. By enabling When it comes to data migration, Dell data movement to take place without brings together the deep expertise, disruption, Dell Migration Services help proven methodologies and multivendor organizations address many of the key expertise to optimize your infrastructure issues around extensive and complex — helping you cut costs, achieve your migrations and storage provisioning. goals and outpace your competition. For more information about solutions for your organization, contact your Dell account representative or visit dell.com/services.This white paper is for informational purposes only, and may contain typographical errors and technical inaccuracies. The content is provided as is, without express orimplied warranties of any kind. © 2012 Dell Inc. All rights reserved. Reproduction of this material in any manner whatsoever without the express written permission ofDell Inc. is strictly forbidden. For more information, contact Dell. Dell, the DELL logo, and the DELL badge, Compellent™, PowerConnect™, EqualLogic™, PowerEdge™ andPowerVault™ are trademarks of Dell Inc. Adobe®, Acrobat®, Flash®, Reader®, and Shockwave® are either registered trademarks or trademarks of Adobe Systems Incorporatedin the United States and/or other countries. Broadcom® is a registered trademark of Broadcom Corporation. Double-Take®, Falconstor®, VMware®, IBM®, HP®, Sun®,Symantec® and XenDesktop® are trademarks of their respective companies, and may be registered in the United States Patent and Trademark Office and in other countries.Intel® is a registered trademark of Intel Corporation in the U.S. and other countries. VMware®, vMotion®, vCenter®, and vSphere® are registered trademarks or trademarks ofVMWare, Inc. in the United States or other countries. Microsoft®, Windows®, Windows Server®, Internet Explorer®, and Active Directory® are either trademarks or registeredtrademarks of Microsoft Corporation in the United States and/or other countries. Scan or click Product and service availability varies by country. Specifications are correct at date of publication but are subject to this code to availability or change without notice at any time. Dell and its affiliates cannot be responsible for errors or omissions in learn how typography or photography. Dell’s Terms and Conditions of Sales and Service apply and are available on request.12 Dell Services Dell and the Dell logo are trademarks of Dell Inc. Dell disclaims proprietary interest in the marks and names of others. can help your © 2012 Dell Inc.  All rights reserved. organization. June 2012 | Dell Data Migration - A Technical White Paper.indd | Rev. 1.0

×