TSM Symposium 2013 - IBM tape technology and tape usage with tsm

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hy is tape not dead? 35 TB on Tape Cartridge is already demonstrated and a 125 TB demonstration is under progress. …

hy is tape not dead? 35 TB on Tape Cartridge is already demonstrated and a 125 TB demonstration is under progress.
I give you an overview of the current tape technology and the huge development potentials for the tape future. Also I discuss the advantage of tape and compare facts, specs and cost with disk. However tape has also some disadvantages, therefore I show you how to use Tape with TSM in order to get most benefits of it.
Finally I give you some facts why you should still use tape in our TSM environment.

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  • 1. TSM Symposium 2013: Tivoli Storage Manager: Future Expectations – Vendor Talks 17.-20. September 2013, Hilton Hotel Gendarmenmarkt, Berlin, Germany IBM Tape Technology and Tape Usage with TSM
  • 2. © 2012 IBM Corporation © 2013 IBM Corporation IBM DataProtection & Retention (DP&R) IBM Tape Technology and Tape Usage with TSM IBM Data Protection&Retention Store data Josef (Sepp) Weingand +49 171 5526783 - weingand@de.ibm.com Infos / Find me on: http://sepp4backup.blogspot.de/ https://www.xing.com/profile/Josef_Weingand http://www.linkedin.com/pub/josef-weingand/2/788/300 http://www.facebook.com/josef.weingand http://de.slideshare.net/JosefWeingand https://www.xing.com/net/ibmdataprotection
  • 3. © 2013 IBM Corporation Why Tape is not dead! - Agenda  Cheap, low TCO – Long lifetime  Green & Cool – Less Power and cooling  High capacity – Needs less floorspace – Compression included  Fast  Secure – Offline – Bit error rate are better than disk  Portable  Roadmap – Future growth  Enterprise Strategy Group: - Most Enterprises utilize a combination of Physical Tape & Disk for Back-up & Restore – More large enterprise users have Tape & Disc installations than Midmarket – Tape-only clients: One-third more midmarket users than large enterprise  Gartner – Confirms that most clients use disk & tape for backup and restore
  • 4. © 2013 IBM Corporation Tape Comes Full Circle At EMC World  Storage Switzerland blog, May 2012 Tape completed its journey back to ‘relevance’ at EMC World 2012. In truth its relevance has really never been lost to the data center….. Why is EMC Embracing Tape in 2012?  …enterprise customers never stopped using tape or thought of it as irrelevant……disk as a way to augment tape, not replace it.  …..Even those who bent on replacing tape discovered that the sheer economic advantages of tape are not easy to dismiss. And, our checks with the EMC field support this turn of events.  …only real alternative for large data sets …..  ….. surprise is the number of mid-range tape libraries sold to the mid-sized segment of EMC’s customer base.  …Tape is Reliable…Tape is Fast….the longer or larger the restore job, the more significant tape’s restore advantage will become.  Tape is Archivable….  EMC has learned that customers need tape to fight the battle with data growth and maintain protection of data assets…..  ….EMC’s Big Advantage - It Focuses on Customer Nee
  • 5. © 2013 IBM Corporation  This report is not about whether disk costs more than tape, or not; it is about having the right mix of disk and tape …, taking advantage of the strengths of both, i.e., the low-cost, high-capacity of tape and the rapid response of disk.  Regardless, for large quantities of data, tape always is much less expensive than disk and always uses much less energy and floor space, when measured on a per-petabyte ba-sis. Tape should be used whenever its some-what slower retrieval times are acceptable.  Source: http://www.lto.org/pdf/Clipper_Group-Long-Term_Storage-TCO_Analysis_of_Tape_and_Disk- May_13_2013.pdf
  • 6. © 2013 IBM Corporation Cost  Comparing DCS3700 with TS3500/LTO6  Capacity – DCS3700: 4U, 60 x 4 TB NL SAS -> Raid6= 192 TB • 19“ Rack: 10 x DCS3700 -> 1,9 PB • 3,1 PB/m² – TS3500 HD Frame: 1320 x 2,5 TB -> 3,3 PB • 3,7 PB/m² • With 2,5:1 Compression -> 8,2 PB • 9,1 PB/m² – Save floor space with Tape!  Purchase €/TB – TS3500 with 12 LTO6 Drives : DCS3700 = 1:3 – With Compression = 1:7  Maintenance – 1:2,6 with Compression 1:6,5  Power – 19“ Rack with DCS3700 -> 8,2 kW – 4,3 W/TB – TS3500 with 12 LTO6 -> 0,3 kW – 0,03 W/TB – Difference per Year: 7400 €/PB  Renewal / Technology Upgrade Cost – Whole Disk System needs to be replaced every 3-5 year – Only Tape Drives and maybe Cartridges needs to be replaced • Tape Library can be used for many years (> 10 Years) – => 1:10 – with Compression 1:27 • Replacement cost with disk are at least 10 times higher than with tape!!
  • 7. © 2013 IBM Corporation Substantial Cost Advantage Tape vs. Disk through 2015 0 2 4 6 8 10 12 14 16 10 yr Archive (Clipper Gp) 5 yr Backup (ESG Study) TCO Comparison Disk Tape $/GB for Storage Media 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1990 1995 2000 2005 2010 2015 Year $/GByte DRAM NAND HDD 2002 estimated CAGR Tape Credit Suisse 2008 Study Grochowski 2003 IDC 08 HDD History Tape Tape’s cost advantage over disk also contributes to a signification TCO advantage
  • 8. © 2013 IBM Corporation 8  CPU Performance 8-10x  DRAM Performance 7-9x  Network 100x  Bus Performance 20x  Disk Drive Performance 1-2x  Tape Drive Performance 7-8x Native Transfer Rate / MB/sec 0 50 100 150 200 250 300 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 MB/sec Tape Disk History
  • 9. © 2013 IBM Corporation Tape is fast Max single Stream Performance: –TS1140: 251 MB/sec – max 650 MB/sec –LTO6: 160 MB/sec – max 645 MB/sec –SAS 15k Raid5 (8+1) ~260 MB/sec –NL SAS 7,2k Raid6 (8+2) ~85 MB/sec –DeDup / ProtecTier ~150 MB/sec Scalability of single Stream –Tape: needs more tape drive, but scales linear •10 TS1140 could deliver 10 x 650 MB/sec –Disk/VTL/DeDup: scales easily, but throughput per stream is shrinking Backup-/ Restoretime 0 20 40 60 80 100 120 140 0,1 10 1000 2000 5000 10000 20000 30000 40000 50000 File size in MB sec Tape Disk/VTL Performance Disk vs Tape 0 1000 2000 3000 4000 5000 6000 1 2 3 4 8 12 16 32 64 Number of parallel streams 0 50 100 150 200 250 300 Tape Single Stream Disk Single Stream Disk Throughput Tape Throughput
  • 10. © 2013 IBM Corporation Basic Tape Recording Technology  Data is recorded in linear serpentine order down and back on the tape in groups of 16/32 channels/tracks at a time (called data wraps) – LTO 16 tracks, TS1140 32 tracks – A tape head consists of 16 / 32 read/write heads elements – To fill a tape several wraps are needed • TS1140: 40 Wraps, LTO6:  In order to position the head several Servo tracks are on the tape  Shingling writing technology is used  Two different ECC are used (like Raid6 on tape)  Data are verified after they are written to tape (read after write verification) – There is always a read head behind a write head 16 Read / Write Heads 2 Servo Heads 14 different lateral offsets Servo Band
  • 11. © 2013 IBM Corporation Servo Technology Timing Based Servo Encoding a ZERO
  • 12. © 2013 IBM Corporation Shingling – Servo Band Generation n-1 Generation n Read Head
  • 13. © 2013 IBM Corporation Tape is secure
  • 14. © 2013 IBM Corporation Data layout on tape with deep interleaving 0Track 0 16 2 18 4 1 17 3 19 5 10 26 12 28 14 11 27 13 29 15 20 6 22 8 24 21 7 23 9 25 30 0 16 2 18 31 1 17 3 19 10 26 12 28 14 11 27 13 29 15 4 20 6 22 8 5 21 7 23 9 4 2 3 1 30 31 24 25 8 6 7 5 12 10 11 9 14 15 13 4 20 6 22 8 5 21 7 23 9 14 30 0 16 2 15 31 1 17 3 24 10 26 12 28 25 11 27 13 29 18 4 20 6 22 19 5 21 7 23 14 30 0 16 2 15 31 1 17 3 8 24 10 26 12 9 25 11 27 13 18 19 28 29 … … One Row Sub Data Set #2 One Row One Row Along Tape 11 mm 2 dead tracks stripe error media defect 29 13 31 15 17 1 19 3 21 5 23 7 25 9 27 11 … … AcrossTape One row from sub data set 30  The drive can tolerate strip errors of 11 mm length across tape  Bit error rate on tape is better than on disk – You can write 10PB – 1 EB more data on tape than disk  The drive can read Data Sets with 2 entirely DEAD tracks out of 16
  • 15. © 2013 IBM Corporation http://gmailblog.blogspot.com/2011/02/gmail-back-soon-for-everyone.html …. 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. But restoring data from them also takes longer than transferring your requests to another data center, which is why it’s taken us hours to get the email back instead of milliseconds. 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. Feb 2011: Google restore gmail from tape Hard Lessons Learned Tape is „last line of defense“! •Tape is offline Medium •Can‘t be delted
  • 16. © 2013 IBM Corporation „The Backup Song“ Yesterday, All those backups seemed a waste of pay. Now my database has gone away. Oh I believe in yesterday. Suddenly, There's not half the files there used to be, And there's a milestone hanging over me The system crashed so suddenly. I pushed something wrong What it was I could not say. Now all my data's gone and I long for yesterday-ay-ay-ay. Yesterday, The need for back-ups seemed so far away. I knew my data was all here to stay, Now I believe in yesterday. http://www.youtube.com/watch?v=rpdiXspBALg
  • 17. © 2013 IBM Corporation Tape Technology Development 35 TB demonstration done in Jan 2011 Working on 125 TB demonstration
  • 18. © 2013 IBM Corporation
  • 19. © 2013 IBM Corporation Take a look at the Bits … (Today LTO5 ) Future TAPE 200 nm x 32 nm 100 Gbit/in2 Demo 2010 Tape has most potential to scale out in capacity * assuming current tape technology
  • 20. © 2013 IBM Corporation INSIC Roadmap
  • 21. © 2013 IBM Corporation
  • 22. © 2013 IBM Corporation Summary of Tape Technology  Tape has a sustainable roadmap for at least another decade – 29.5 Gbit/in2 areal density demonstration shows feasibility of multiple future tape generations  INSIC roadmap has been extended to 2022 with a predicted native cartridge capacity of 128TB  Potential for scaling tape beyond 29.5 Gb/in2 towards 100Gb/in2 and beyond  Tape has a bright future!
  • 23. © 2013 IBM Corporation Tape – yes, but how…? Over 80% consider tape an integral part of their backup process Source: Enterprise Strategy Group Research Report, 2010 Data Protection Trends, April 2010  „One fits all“ can not full fill all Requirements  Establish backup & restore policies by type of data – Critical data – Important application data – Data with business value  Use combination of disk & tape to balance RPO / RTO, costs  Protect data against logical corruption, physical destruction, unauthorized access – Maintain multiple copies, geographically separated – Use different types of media • Only the combination of different Backup-Method guarantees Security, Performance and EfficiencySecurity, Performance and Efficiency!
  • 24. © 2013 IBM Corporation Disk TAPE DISK Disk/VTL IBM DP&A: Smarter Backup Solution LAN SA N SA N Disk NAS Disaster Recovery – 3. Location CopyCopy DB2 MoveMove T0 Copy T0 Copy Disk Backup Storage Data Classes
  • 25. © 2013 IBM Corporation25 Infos / Find me on: http://sepp4backup.blogspot.de/ https://www.xing.com/profile/Josef_Weingand http://www.linkedin.com/pub/josef-weingand/2/788/300 http://www.facebook.com/josef.weingand
  • 26. © 2013 IBM Corporation26
  • 27. © 2013 IBM Corporation 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.
  • 28. © 2013 IBM Corporation Trademarks The following terms are trademarks or registered trademarks of the IBM Corporation in either the United States, other countries or both. IBM, S/390, ES/3090, ES/9000, AS/400, RS/6000, MVS/ESA, OS/390, VM/ESA, VSE, TPF, OS/2, OS/400, AIX, DFSMS/MVS, DFSMS/VM, ADSTAR Distributed Storage Manager, DFSMSdfp, DFSMSdss, DFSMShsm, DFSMSrmm, FICON, ESCON, Magstar, Seascape Other company, product, and service names mentioned may be trademarks or registered trademarks of their respective companies. Windows NT is a registered trademark of Microsoft Corporation.