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IBM i with External Storage Customer References Jana Jamsek ATS Europe

IBM i with External Storage Customer References Jana Jamsek ATS Europe. Unformal information about IBM i customers with external storage in Europe was collected in 2009 and updated recently. Possibly there are many more customers of whom we haven’t got information.

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IBM i with External Storage Customer References Jana Jamsek ATS Europe

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  1. IBM i with External StorageCustomer ReferencesJana JamsekATS Europe

  2. Unformal information about IBM i customers with external storage in Europe was collected in 2009 and updated recently.Possibly there are many more customers of whom we haven’t got information.

  3. Customers with IBM i and DS8000 • Spain: 20 customers • retail, bank, industry, insurance, food, distribution, public • DS8000 copy services and Copy Services Toolkit • France: 22 customers, including • 6 Metro Mirror/ Global Mirror for DR solution • 6 IBM i mirroring • 4 software replicatio for DR • 1 Geo mirroring

  4. Customers with IBM i and DS8000 - continue • Netherlands: 14 customers • Including Global mirror for DR solution • UK: 5 customers • Including Copy services Toolkit for DR solution • Sweden: 5 customers • Including Copy services Toolkit for DR solution • Denmark: 3 customers • Hungary: 2 customers • Bank, insurance • Slovakia: 2 customers • Bank

  5. Customers with IBM i and DS8000 - continue • Italy: 13 customers • Including Metor Mirro / Global Mirror, FlashCopy, and Copy services toolkit • Bank, fashion, retail • Austria: 7 customers • Bank, food • Including Metro Mirror for DR solution • Germany: 156 customers • Including Metro Mirror for DR • Israel: 2 customers • Including Metro Mirror for DR

  6. Customers with IBM i and DS8000 - continue • Greece: 7 customers • Bank, food, retail • Switzerland: 10 customers • Industry, fashion • Including Metro Mirrro for DR solution and Copy services toolkit • Russia: 2 customers • bank

  7. Customers with IBM i and DS5000 • Italy: 2 customers • Including Copy services toolkit • Germany: 2 customers • Austria: one customer • Nethrelands: one customer • UK: one customer • Ireland: one customer

  8. Customers with IBM i and XIV • Germany: 2 customers • Norway: 2 customers • Spain: one customer • Bank • Turkey: one customer with SVC and XIV (?) • Switzerland: a benchmark with SVC and XIV was performed

  9. Customers with IBM i and SVC • Germany: one customer • Turkey: one customer with SVC and XIV (?) • Switzerland: a benchmark with SVC and XIV was performed

  10. Customers with IBM i and Storwize • Netherlands: 2 customers • Software replication for DR • Italy: 2 customers • Both customers run IBM i on Blade • Software replication for DR • Germany: one customer (?)

  11. Following are some customer cases on which I worked; they are not official References. I am describing them as I remember, using the data and reports which I still keep.

  12. Banking customer - A • The customer implemented ESS with IBM i in early 2000th • In 2005 they did a benchmark for their IBM i systems between IBM DS8000 with Metro Mirror and EMC SRDF. DS8000 with Metro Mirror provided better performance than the competition, the client decided for DS8000.

  13. Switches 2107 A 2107 B 2107 E 2107 F ......... I5 595 A I5 595 B I5 595 C I5 595 D P-S C-S P L L-S O-S C O ......... A Ch Ch-S S-S Pr S Pr-S A-S 2107 G 2107 C Site A Site B Customer’s configuration - A Metro Mirror of all IBM i lpars across sites

  14. Banking customer - A • A DS8000 at the customer site: 5 frames, 128 ranks (64 drive sets), RAID-5 (possibly changed to RAID-10 in the meantime), shared extent pools, storage pool striping for defining LUNs • The client implemented Production site and DR site on distance 10 km. Metro Mirror of IBM i LPARs is used accross the sites. • The customer is happy with performance of their IBM i LPARs.

  15. Banking customer - B • The customer implemented DS8000 with several IBM i LPARs. • Production IBM i system used IBM i mirroring within the DS8000 disk space. Journals were located in system ASP • On production workload in DS8000 he noticed long waits for IO that prolonged the batch jobs. • We investigated this performance issue

  16. Banking customer - B • We suggested: • Stop IBM i mirroring and implement RAID-10 • Increase the cache in DS8000 from 64 GB to 256 GB • Implement journal caching in IBM i • For testing the suggested improvements we setup a Proof of concept in Mainz. The customer sent his workload to Mainz where we restored it; he connected from remote. • The PoC showed significant improvements in duraion of the customer’s batch job. • After the customer performed the suggested changes the resposne time in IBM i decreased, and the duration of batch job decreased for 30%. * • Experienced disk service time on DS8000 is about 1.4 * I don’t have the documentation anymore, 30% is what I recall

  17. Banking customer - C • The customer used 540 * 15K RPM internal disk drives in mirroring • About 27 000 IO/sec including double writes/sec for mirroring or 16 000 IO/sec without mirroring • Average disk service time was 0.8 ms, average wait time is 0, write cache efficiency 88.4 % • He implemented • 360 * 15 K RPM internal disk in mirroring • plus 328 * LUNs on DS8000 with 1456 GB 15 K RPM disks in RAID-10, IOP-based adapters • Average service time on is 1.7 ms average wait time 0.1

  18. Financial services customer - D • IBM i system ASP and IASP with the application, on internal 15K RPM disk, Geo Mirroring to DR site • The client moved both System ASP and IASP to DS5000 with 15K RPM disk, IASP in RAID-5 • Disk response time in IASP on internal disk: • service time 3.9 ms, • wait time 0.7 ms • Disk response time in IASP on DS5000: 2.5 ms, wait time 0.2 ms

  19. Financial services customer - D • The customer experienced that some of the jobs in Batch job lasted longer when running in IASP on DS5000, comparing to internal disk. • On our suggestion the client installed SSD in abut 10% of IASP capacity. • PEX data collection and iDoctor queries were used to identify hot data • The hot objects were moved to SSD • Duration of the batch jobs significantly improved • IASP service time 3.7 ms • IASP wait time 1.7 ms • Although teh average service time and wait time are not lower than previously, teh duration of the batch job improved because of drastically better read service time on hot objects • The customer is looking for Copy Service Toolkit with DS5000

  20. Industry customer - E • The customer has several servers: • VMWare • AIX • IBM i • VIOS • They are conencted to storage systems • DS8000 • DS6000 • DS4800 • IBM i: IASP with Integrated xServie server disk space connected with VIOS_NPIV to DS8000, Metro Mirror of IASP • Disk service time is 5 -6 ms

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