Virtualization Simplified - Guide to Server Virtualization

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This presentation was created for K-12 Public School District Technology Directors in the State of Ohio. It covers VMWare VSphere and rationale for conversion from Physical Environments.

This presentation was created for K-12 Public School District Technology Directors in the State of Ohio. It covers VMWare VSphere and rationale for conversion from Physical Environments.

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  • VMware vCenter Server provides greater operational control of vSphere environments through automation and deep visibility into every level of virtual infrastructure. It scales to manage large environments and integrates with industry-leading systems management solutions for enterprise-wide system management. VMware vCenter Orchestrator is an automation orchestration tool that enables you to put together, via an easy drag & drop interface, automated workflows of tasks and processes specific to your needs and environment. All the ~800 operations in vSphere environments are represented as workflow elements and through simple drag & drop you can create automated workflows and orchestration of execution sequence across many different elements.For example, one advanced VMO user created a workflow that enabled datacenter migration in the click of one button. This was a workflow that performed a number of VC operations on each VM in a cluster, including a VMotion, until the entire set of VMs had been migrated to a cluster in another datacenter. vCenter Orchestrator will ship with at least 3 canned workflows (10-15 more are in the pipeline):Workflow to snapshot all VMs in a DRS cluster – which is typically executed prior to patching VMsWorkflow to rescan the HBAs on all hosts when a LUN is added Send email to admin when a VM is powered onvCenter Server Linked Mode – allows vCenter Servers in a multi-datacenter environment to join a group, allowing the sharing of roles and permissions. A single vSphere client (formerly VI Client) can be used to log into many VCs – and inventory across many VCs can be managed from this single pane of glass. This improves the scalability of vCenter Server.vCenter Server 4 introduces the ability to join multiple vCenter Servers into a linked‐mode group. Then you can use the vSphere Client to log on to any single instance of vCenter Server and view and manage the inventories of all the vCenter Servers in the group. Each user sees only the vCenter Server instances for which they have valid permissions. There are several reasons why you may want to link vCenter Servers. For example, you may want to simplify management of inventories associated with remote offices or multiple datacenters. Likewise, you could use Linked Mode to configure a recovery site for disaster recovery purposes.vCenter Server Linked Mode allows for:Global role definitionsSearches for inventory items across multiple vCenter Server instancesAnd a license model across multiple vCenter ServersLinked Mode uses Microsoft Active Directory Application Mode (or ADAM <Adam>) to store and synchronize data across multiple vCenter Server instances. ADAM is an implementation of Lightweight Directory Access Protocol (or LDAP <el dap>). ADAM is installed automatically as part of the vCenter Server installation. Each ADAM instance stores data from all vCenter Servers in the group. Using peer‐to‐peer networking, the ADAM instances in a group replicate shared global data to the LDAP directory. The global data for each vCenter Server instance includes:Connection information (that is, IP addresses and ports)Certificates and thumbprintsLicensing informationAnd user rolesAll vCenter Server instances in a linked‐mode group can access a common view of the global data. ThevSphere Client can connect to other vCenter Servers using the connection information retrieved from ADAM.vCenter host profiles simplify and standardize ESX host configuration. This feature in vCenter Server 4.0 allows the creation of a “golden profile” from an existing host and using this as a template to configure other hostsHost profiles can be associated with other hosts/clusters and compliance to these profiles can be monitored and enforced automaticallyThis is a powerful capability – especially when used in conjunction with the vNetwork Distributed Switch, reducing considerably the time spent in making sure of ESX host configurationsIn large scale environments, when ESX hosts are being added every day or every hour, standardizing the storage, network and security configurations of these hosts becomes really important. Managing change can also be complex especially when the same change needs to be applied to many hosts (example – array goes through firmware upgrade, and multipathing settings need to be changed across all hosts in a cluster)The Host Profiles feature allows you to export configuration settings from a gold reference host and save them as a portable set of policies, called a host profile. You can then use this profile to quickly configure other hosts in the datacenter. Configuring hosts using this method drastically reduces the setup time of new hosts: 10’s of steps reduced to a single click. Host profiles also eliminate the need for specialized scripts to configure hosts. Additionally, vCenter uses the profile as a configuration baseline, so you can monitor for changes to the configuration, detect discrepancies and fix them.Host profiles eliminate per-host, manual, or UI-based host configuration and efficiently maintain configuration consistency and correctness across the entire datacenter.
  • This is another example of how VMware enables higher performance from physical hosts.

Transcript

  • 1. Virtualization Simplified - Guide to Server Virtualization Joe Penney – Technology Coordinator, Madison Plains Local School District Matt Honigford – Technical Account Manager, VMware Madison Plains Local School District Home of the Golden Eagles © 2009 VMware Inc. All rights reserved
  • 2. What’s the purpose of this session? To help you prepare… Madison Plains Local School District Home of the Golden Eagles
  • 3. Fiscal Impact of Virtualization Traditional Model 10 Physical Servers Power Consumption Replacement of 2 Servers** @ $5,000.00* = $10,000.00 Dell PE2950 Total: $10,000.00 Yearly Virtualized Model 2 Physical Servers (10 Virtual Servers) 1 Server per 2-3 years** @ $5,000.00 = ($1,667.00 per year(3)) ESX Software: $934.00 per ESX/yearly = $934.00 x 2 = $1,868.00 Total: $3,535.00 Yearly Assumptions: *Physical Server Cost - $5000.00 **BP's - 20% Renewal per Year Madison Plains Local School District Home of the Golden Eagles
  • 4. Key Features of Virtualization Partitioning Isolation Run multiple virtual machines Each virtual machine is isolated simultaneously on a single physical from other virtual machines on the server same server Encapsulation Hardware Independence Virtual machines encapsulate entire systems (hardware Run a virtual machine on any configuration, operating server without modification system, apps) in files Madison Plains Local School District Home of the Golden Eagles
  • 5. >95% of Apps Match Native Performance on Virtual Machines ESX 2 ESX 3 ESX 3.5 ESX 4 30% - 60% 20% - 30% <10% - 20% <2% - 10% Overhead 1 vCPU 2 vCPU 4 vCPU 8 vCPU % of Applications < 4 GB 16 GB 64 GB 255 GB 380 Mb/s 800 Mb/s 9 Gb/s 30 Gb/s < 10,000 20,000 100,000 > 350,000 Application Performance Requirements 1. Source: VMware Capacity Planner assessments Madison Plains Local School District Home of the Golden Eagles
  • 6. VMware vSphere enables you to use all those cores… VMWare ESX Scaling: 1000 Keeping up with core Oracle counts SQL Server Virtualization provides a means to exploit 100 Number of Cores used Exchange the hardware’s increasing parallelism Avg. Cust, Applic ation 10 Avg. Four Socket Web Servers 1 Most applications 1990 1995 2000 2005 2010 2015 don’t scale beyond Year 4/8 way Madison Plains Local School District Home of the Golden Eagles
  • 7. ESX 4.0 Performance with SQL Server 2008 Relative Scaling Ratio ESX achieves 90% of native performance on VM 147.24 4.0 vCPU VM Native 133.12 Workload transaction latency unchanged 94.04 between ESX 4.0 79.88 and Native 51.08 45.22 1 vCPU 2 vCPU 4 vCPU Madison Plains Local School District Home of the Golden Eagles
  • 8. How do I begin? By Developing a Plan… Madison Plains Local School District Home of the Golden Eagles
  • 9. VMware vSphere (ESX4) – Deployment Options Madison Plains Local School District Home of the Golden Eagles
  • 10. Perform Assessment Using Capacity Planner VMware Capacity Planner is… • An optimized business and decision support tool • Used to perform faster, more accurate and benchmarked consolidation assessments from the datacenter to the desktop Capacity Planner provides: • Complete state of the infrastructure (As-Is) • Comprehensive future state consolidation recommendation and roadmap (To-Be) Madison Plains Local School District Home of the Golden Eagles
  • 11. Capcity Analysis Detailed Analysis Time Based: Server Hourly Utilization 100 Desktop Hourly Utilization compatible 100 systems, hourly 90 90 80 80 70 % Utilization patterns, business/ 70 60 % Utilization 60 50 50 40 40 30 20 30 20 peak hours 10 10 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 0 1 2 3 4 5 6 7 8 9 10 11 Hour of Day 12 13 14 15 16 17 18 19 20 21 22 23 All Resources: Hour of Day 18 19 20 CPU, Memory, Disk, N 21 22 23 CPU Disk I/O Network I/O Memory CPU Disk I/O Network I/O Memory 100 Good Consolidation etwork 90 80 70 Conversion Factors: % Utilization 60 50 40 CPU 30 20 10 speedup, virtualization overhead, virtualization 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Hour of Day Server B CPU Server A CPU Benefits Comparisons: hardware, groups, thre  Output: Consolidation blueprint with VM configuration and recommendations sholds Madison Plains Local School District Home of the Golden Eagles
  • 12. Or use vCenter’s Guided Consolidation • Automatically discovers physical servers Discover • Analyzes utilization and usage patterns • Converts physical servers to VMs placed intelligently based on user response Analyze • Lowers training requirements for new virtualization users • Steers users through the entire consolidation process Convert Madison Plains Local School District Home of the Golden Eagles
  • 13. What are my first steps? Put the Plan into action… Madison Plains Local School District Home of the Golden Eagles
  • 14. vSphere ESXi as a Solid Foundation VMware ESXi Architecture • True thin hypervisor: 70MB • No general-purpose OS • Easy to install / configure • Very small security attack surface ESXi 4.0 • Direct driver model = I/O scaling • Drivers optimized for VMs • Special treatment for drivers Madison Plains Local School District Home of the Golden Eagles
  • 15. VMware vCenter for “Single Pane of Glass” Management Datacenter • Centrally manage Virtual Machines Cluster • Instantly provision new servers with standardized templates Stand-alone • Dynamically move workloads across Host Resource Pool servers without service interruption Monitor system availability and performance Automate notifications and alerting Integrate Disaster Recovery Backup Solution Madison Plains Local School District Home of the Golden Eagles
  • 16. Physical to Virtual Machine Converter Use VMware Converter To: • Perform Physical to Virtual P2V conversion of your existing servers • Resize hard disk size (both up and down) during P2V • Convert both Windows and Linux machines • Provide DR solution by scheduling P2V of remaining physical server on regular basis Madison Plains Local School District Home of the Golden Eagles
  • 17. What are the most utilized features? Enterprise Options/Simple Configuration…
  • 18. Live Migration Of Virtual Machines with VMotion What is it? • Live migration of virtual machines from one physical server to another Environment Impact • Zero downtime to virtual machines • Continuous service availability • Complete transaction integrity • Supported on Fibre Channel and iSCSI SAN and NAS (NFS) Shared Storage
  • 19. High availability with VMware HA What is it? • Automatic restart of virtual machines in case of server failure What is its impact? XResource Pool • Cost effective high availability for all applications • No need for dedicated stand-by hardware • None of the cost and complexity of clustering Madison Plains Local School District Home of the Golden Eagles
  • 20. Resource Optimization with DRS What is it? • Dynamic balancing of computing resources across server pools User Demand • Intelligent resource allocation based on pre-defined rules Impact • Prioritize server resource availability • Add hardware dynamically to avoid over-provisioning to peak load • Automate hardware maintenance Server Pool Madison Plains Local School District Home of the Golden Eagles
  • 21. Zero Downtime Maintenance with DRS • What is it? • Maintenance Mode moves machines to alternate hosts in the pool. • What is its impact? • No application outage • No user impact • No server configuration changes Resource Eliminate planned downtime! Pool Maintenance Perform Enter Complete Maintenance Mode Madison Plains Local School District Home of the Golden Eagles
  • 22. VMware VMFS File System and Storage VMotion Abstract Mobilize • Distributed Cluster File • Storage VMotion moves virtual System (VMFS) allows any machine disks from one storage type of storage to be location to another without attached and used with disruption or downtime VMware Madison Plains Local School District Home of the Golden Eagles
  • 23. vStorage Thin Provisioning • Virtual machine disks consume only the amount of physical App App App space in use OS OS OS  Virtual machine sees full logical disk size at all times ESX  Full reporting and alerting on allocation and consumption 10GB 10GB 20GB 10GB 40GB Virtual Disks Significantly improve storage 20GB 40GB 100GB utilization Eliminate need to over-provision Physical virtual disks Storage 70GB 30GB Reduce storage costs by up to 50% Madison Plains Local School District Home of the Golden Eagles
  • 24. VMware Fault Tolerance Single identical VMs running in lockstep on separate hosts Zero downtime, zero data loss failover for all virtual machines in case of hardware failures App App App Integrated with VMware HA/DRS FT OS OS OS VMware ESX VMware ESX Zero downtime, zero data loss No complex clustering or specialized hardware required Single common mechanism for all applications and OS-es X Madison Plains Local School District Home of the Golden Eagles
  • 25. vNetwork Distributed Switch Aggregated datacenter level virtual networking APP APP APP APP APP APP APP APP APP OS OS OS OS OS OS OS OS OS Simplified setup and change vSwitch vSwitch vSwitch Cisco Nexus 1000V vNetwork Distributed Switch Easy VMware vSphere™ troubleshooting, monitoring and debugging Enables transparent third party management of virtual environments Madison Plains Local School District Home of the Golden Eagles
  • 26. Some Additional Best Practices Planning for success… Madison Plains Local School District Home of the Golden Eagles
  • 27. Leverage VMware Update Manager • Automates patch management for ESX Server hosts and select Microsoft and RHEL virtual machines  Scans and remedies online as well as offline virtual machines and online ESX Server hosts OFFLINE  Snapshots virtual machines prior to patching and allows rollback to snapshot Eliminates manual tracking of patch levels of ESX Server hosts and virtual Update machines Manager Automates enforcement of patch standards Reduces risk through snapshots and offline virtual machine patching Madison Plains Local School District Home of the Golden Eagles
  • 28. Improve Backups with Data Recovery and vStorage API’s Agentless file level backup Move backup out of the virtual machine • A single agent running on the proxy server rather than an agent on every virtual machine. Eliminate backup traffic on the local area network • Utilize Fibre Channel tape devices for virtual machine backups Pre-integrated with major 3rd-party backup products Madison Plains Local School District Home of the Golden Eagles
  • 29. Storage is key! Storage misconfiguration is responsible for ~80% of performance problems File Guest System Guest Arrays expected to respond in about 10- 20 ms Excepted additional storage latency due Monitor Monitor to ESX about 100 us Virtual SCSI ESX has demonstrated 350K IOPS or 250 Oracle DBs on one server File System I/O Drivers Use vSphere to optimize your storage Physical Hardware Madison Plains Local School District Home of the Golden Eagles
  • 30. Application scale out may be better than sale up… 8,000 Mailboxes 16,000 Mailboxes Server with 16 cores Server with 16 cores Running one instance of running 6 instances Exchange of Exchange Madison Plains Local School District Home of the Golden Eagles
  • 31. Take it from Experience… Some lessons learned: • Don’t P2V domain controllers!!! • Don’t forget your Snapshots!!! • Size storage correctly (IOPS/Capacity) • Don’t change vSwitch names while running! • Use nice switch (possibly one that supports VLAN’s) • Segment traffic for VM’s/iSCSI/etc. • Use redundant components whenever possible Madison Plains Local School District Home of the Golden Eagles
  • 32. OARnet and VMware Partnership Agreement allows OARnet to distribute and license VMware solutions to Ohio colleges and universities • Reduce the current and future operating cost for K-12 education through aggregate purchase of VMware products • Expand program benefits through the inclusion of all education (K-20) Potential Savings: $130 million over 3 years • Reduction in hardware (servers, desktops) budgets • Reduction in operational and maintenance costs • “Green IT” due to lower use of energy and space For information, go to http://www.oar.net and click on “Purchase VMware” Madison Plains Local School District Home of the Golden Eagles
  • 33. Q&A Thank You! Madison Plains Local School District Home of the Golden Eagles