© 2011 ibm corporation ibm i with external storage customer references jana jamsek ats europe

© 2011 IBM Corporation

IBM i with External StorageCustomer References

Jana JamsekATS Europe


IBM Storage Systems

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.


IBM Storage Systems

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


IBM Storage Systems

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


IBM Storage Systems


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


IBM Storage Systems


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


IBM Storage Systems

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


IBM Storage Systems

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


IBM Storage Systems

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


IBM Storage Systems

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 (?)


IBM Storage Systems

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.


IBM Storage Systems

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.


IBM Storage Systems

2107 A 2107 B

I5 595 A I5 595 CI5 595 B

2107 C

I5 595 D

2107 E 2107 F

2107 G

Site A Site B

.........

.........AA-SSPr

ChPr-S

Ch-S S-S

LL-S O

PC

C-SP-SO-S

Switches

Customer’s configuration - A

Metro Mirror of all IBM i lpars across sites


IBM Storage Systems

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.


IBM Storage Systems

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


IBM Storage Systems

Banking customer - BWe 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


IBM Storage Systems

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


IBM Storage Systems

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


IBM Storage Systems

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


IBM Storage Systems

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

© 2011 ibm corporation ibm i with external storage customer references jana jamsek ats europe

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