This presentation is designed to help IBM Sales to discuss Backup/Restore topics and explore business. The will be able to easily design a Backup/Restore Solution in customer environement and align storage hardware. Based on the IBM Framework, part I released in 2009. New: Blueprints
3/12 Of course, we protect data with backup systems because we might need to recover is some day. While disasters or major business disruptions are rare, compared to ordinary file restore requests; they ’re frequent enough to warrant a significant investment. If a disaster is declared, what to we want to recover? We want to recover all the information needed to run the business – and we want to do it as quickly as possible. So I ask you, how do we improve the efficiency of recovery systems, if up to 70% of the data is old or duplicate? When we recognize how these challenges are related, and understand the current inefficiencies; the case for improved Data Protection and Retention is compelling. Inefficient Data Protection and Retention processes can be a Gold Mine of efficiency opportunities. For example, if a disaster is declared, can you restore the 30% or so of your data that is active, or do you have to restore everything? How much does your organization spend protecting data that is duplicate, expired, or infrequently accessed? Data Protection and Retention improvements can improve service levels and control costs by helping clients eliminate unnecessary process steps and workload. In many cases, efficiency improvements free more than enough captive resources to enable improvements in recovery time objectives and recovery point objectives.
2000 60GB 62 sec 2011 4000GB 40 sec Published Values for Bit Error Rate (BER) Tape drives (Midrange and Enterprise) Midrange (typical LTO Ultrium drive) 1 x 10E17 bits Enterprise (typical mainframe drive) 1 x 10E19 bits Disk (FC, SAS, SATA) Enterprise FC/SAS 1 x 10E16 bits Enterprise SATA 1 x 10E15 bits Desktop SATA 1 x 10E14 bits In addition, today’s tape technologies like LTO Ultrium drives, perform a read after write verification process. That is, a set of read elements read the data immediately after it is written to tape to verify that the data was written accurately. LTO Ultrium tape also includes advanced servo tracking mechanisms to help provide precision tracking of the read/write heads with the tape.
STG Update 24.11.11
The Tape Renaissance IBM Tape Technology
Have you heard? <ul><li>Tape Backup is too slow </li></ul><ul><li>Tape Restore takes too long </li></ul><ul><li>Tapes are not reliable </li></ul><ul><li>Disk backup is cheaper </li></ul><ul><li>Tape is dead… </li></ul>
Backup and Recovery are top concerns for IT Managers Reasons for Data Losses? Source: “For Small Businesses, Bad Backup Can Lead to Data Loss”, http://www.businessnewsdaily.com/data-loss-backup-physical-online-1077/ 42% of midmarket companies have experienced data loss. 32% lost files forever .
Hard Lessons Learned August 2011 April 2011 April 2011 : Amazon's huge EC2 cloud services crash permanently destroyed some data…. Amazon didn't say explicitly whether it was human error that touched off the event ….. August 2011: Lightning Strikes Out Amazon’s Cloud „ … . Separately, and independent from the power issue in the affected availability zone, we’ve discovered an error in the EBS software that cleans up unused snapshots. During a recent run of this EBS software in the EU-West Region, one or more blocks in a number of EBS snapshots were incorrectly deleted. The root cause was a software error that caused the snapshot references to a subset of blocks to be missed during the reference counting process ….. „ „… .. Not only are 18 days of backups for some volumes gone, the majority of the remaining snapshots have been corrupted by Amazon’s backup system . ….“
Hard Lessons Learned Feb 2011: Google restore gmail from tape … . I know what some of you are thinking: how could this happen if we have multiple copies of your data, in multiple data centers? Well, in some rare instances software bugs can affect several copies of the data. That’s what happened here. Some copies of mail were deleted, and we’ve been hard at work over the last 30 hours getting it back for the people affected by this issue. To protect your information from these unusual bugs, we also back it up to tape . Since the tapes are offline, they’re protected from such software bugs . So what caused this problem? We released a storage software update that introduced the unexpected bug, which caused 0.02% of Gmail users to temporarily lose access to their email. When we discovered the problem, we immediately stopped the deployment of the new software and reverted to the old version. Tape is, last line of defense !
Tape Positives <ul><li>Cost </li></ul><ul><ul><li>Tape storage cost remains multiple orders of magnitude below the same size disk system </li></ul></ul><ul><li>Power </li></ul><ul><ul><li>The biggest cost in the data center is power/cooling for storage… Tape archive has near zero Watts of power consumption </li></ul></ul><ul><li>Reliability </li></ul><ul><ul><li>Tape’s inherent error rate is 1000 times better than disk and has 20 - 30 years of storage life </li></ul></ul>
What happens to Tape? <ul><li>Major development achievement in the last few years </li></ul><ul><ul><li>Cartridge capacity increases, while shrinking (or maintaining) access time </li></ul></ul><ul><ul><li>Improved drive reliability and bit error rates </li></ul></ul><ul><ul><li>Much longer media life </li></ul></ul><ul><ul><li>Faster data rates and variable data rates </li></ul></ul><ul><ul><ul><li>Up to 250 MB/sec native (up to 650 MB/sec with compression) </li></ul></ul></ul><ul><ul><ul><li>30 – 250 MB/sec variable speed </li></ul></ul></ul><ul><li>New Tape File System makes usage of tape much easier </li></ul><ul><ul><li>Solution with a combination of disk and tape approached </li></ul></ul>
Magnetic Tape (R)evolution Product / Year: IBM 726 /1952 LTO5 / 2010 Demo 2010 Capacity: 2.3 MBytes 1.5 TBytes 35 TBytes Areal Density: 1400 bit/in 2 1.21 Gbit/in 2 29.5 Gbit/in 2 Linear Density: 100 bit/in 385 kbit/in 518 kbit/in Track Density: 14 tracks/in 3.14 tracks/in 57 ktracks/in Track density increase will be key for increasing the capacity of future tape systems 18x Bit aspect ratio: HDD (TDK demo, 2010): 3.9:1 Tape (LTO5, 2010): 123:1
Tape Technology & Development <ul><li>2002: 1 TB Demonstration </li></ul><ul><ul><li>GA expected 6 years later </li></ul></ul><ul><ul><li>GA 2008 with TS1130 </li></ul></ul><ul><li>2006: 8 TB Demonstration </li></ul><ul><ul><li>GA expected 6-8 years later </li></ul></ul><ul><li>2010: 35 TB Demonstration </li></ul><ul><li>… and 100 Gb/in² appears to be feasible </li></ul>IBM scientist’s read-write tape device: new record in tape data density of 29.5Gbits / square inch
Why Tape – Advantages of Tape <ul><li>Advantages </li></ul><ul><ul><li>Fast streaming performance for large data </li></ul></ul><ul><ul><li>Off-line and portable </li></ul></ul><ul><ul><li>Easily scalable </li></ul></ul><ul><ul><ul><li>independently in capacity and performance </li></ul></ul></ul><ul><ul><ul><li>Performances scales linear in performance </li></ul></ul></ul><ul><ul><li>Long-term investment protection </li></ul></ul><ul><ul><li>Hugh development potential in large capacity </li></ul></ul><ul><ul><ul><li>35 TB already demonstrated </li></ul></ul></ul><ul><li>Lowest TCO </li></ul><ul><ul><li>Investment </li></ul></ul><ul><ul><li>Energy cost </li></ul></ul><ul><ul><li>23:1 over SATA disk </li></ul></ul><ul><li>It is estimated that 70% of the world’s data is on tape. </li></ul>Green IT only with Tape!
Long Term File System (LTFS) <ul><li>File system implemented on dual-partition linear tape (LTO 5 + TS1140) </li></ul><ul><li>Makes tape look and work like any removable media </li></ul><ul><ul><li>Files and directories show up on desktop, directory listing </li></ul></ul><ul><ul><li>Drag-and-drop files to/from tape </li></ul></ul><ul><li>Supports data exchange </li></ul><ul><li>Self-describing tape cartridge </li></ul><ul><ul><li>index enables recovery w/o external information </li></ul></ul><ul><ul><li>directory structure, file attributes, multiple file extends </li></ul></ul><ul><li>Supports stand-alone drives and libraries (up to 60 PB File System) </li></ul><ul><li>Opens significant new use cases </li></ul><ul><ul><li>(video archives, medical images, etc.) </li></ul></ul>File Attributes Directory Structure File system info. File bodies File List Display Disk LTO Drag&Drop Application LTFS
Summary <ul><li>Tape remains the most cost-efficient and greenest technology for data backup and archival storage </li></ul><ul><ul><li>Total cost of ownership advantage of tape over disk >20x </li></ul></ul><ul><ul><li>Very long lifetime of 30+ years </li></ul></ul><ul><li>Tape has a sustainable roadmap for at least another decade </li></ul><ul><ul><li>29.5 Gbit/in 2 areal density demonstration shows feasibility of several future tape generations </li></ul></ul><ul><ul><li>LTO roadmap has just been extended to 8 generations with up to 12.8 TB native capacity </li></ul></ul><ul><li>Long Term File System enables self-contained tape cartridges </li></ul><ul><ul><li>Makes tape look and work like any removable media </li></ul></ul><ul><ul><li>File system available now with standalone LTO5 tape drives </li></ul></ul><ul><ul><li>Opens significant new use cases such as video archive and individual scene access </li></ul></ul><ul><li>Tape is alive and doing better than ever! </li></ul>
What is the right Storage for your Backup? <ul><li>Only a combination of Disk, VTL, Tape and Software can optimize the backup infrastructure </li></ul><ul><ul><li>Storing information according to its value, maximizes performances while reducing costs </li></ul></ul><ul><li>SLA </li></ul>
Disclaimers The performance data contained herein was obtained in a controlled environment based on the use of specific data. Actual results that may be obtained in other operating environments may vary significantly. These values do not constitute a guarantee of performance. Product data is accurate as of initial publication and is subject to change without notice. No part of this presentation may be reproduced or transmitted in any form without written permission from IBM Corporation. References in this document to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM program product in this document is not intended to state or imply that only IBM's program product may be used. Any functionally equivalent program may be used instead. The information provided in this document has not been submitted to any formal IBM test and is distributed "As Is" basis without any warranty either express or implied. The use of this information or the implementation of any of these techniques is a customer responsibility and depends on the customer's ability to evaluate and integrate them into their operating environment. While each item may have been reviewed by IBM for accuracy in a specific situation, there is no guarantee that the same or similar results will be obtained elsewhere. Customers attempting to adapt these techniques to their own environments do so at their own risk.
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