5486wrkperf.fm Draft Document for Review October 18, 2004
56 IBM Eserver i5 and iSeries System Handbook
25 disk operations per second, you could feel the controller slowing down. Any
more than that and the controller started to bottleneck.
Using 10k rpm drives and replacing the above controller with a #2757 PCI-X
Ultra RAID Disk Controller meant that you could go up to about 50 disk
operations/second/disk with a possibility of still handling peaks at 60 operations
per second (after which the disk drive started to bottleneck). With 15k disk drives
and a #2757 (15 drives per controller), you could go up to 50 disk operations per
second per drive.
For disk-related performance information, refer to “Chapter 14, DASD
Performance Management”, in iSeries Performance Capabilities Reference,
SC41-0607.
Disk Magic for iSeries
The IBM Disk Magic for iSeries product is intended for modeling ESS disk drives
on iSeries servers. Configuration and workload details are entered into the tool.
Algorithms support calibration, configuration changes, workload changes, and
automatic cache modeling. The output is available in tabular and graphic reports.
Performance analysis is based on limited measurement data. Disk Magic for
iSeries is most useful to obtain rough performance estimates of ESS drives on
iSeries servers.
You can find the tool on the Web at:
http://w3.ibm.com/sales/systems/portal
https://www-1.ibm.com/partnerworld/sales/systems/portal
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Refacing options for the iSeries customer
Several products are available for the iSeries to reface (browser-enable) 5250
application software. Some of the products available from IBM include:
IBM WebFacing Tool: Part of WebSphere Development Studio (5722-WDS)
Host Access Transformation Services Toolkit: Part of WebSphere
Development Studio (5722-WDS)
iSeries Access for Web: Part of iSeries Access Family (5722-XW1)
WebSphere Host on Demand: Part of Host Access Client Package for iSeries
(5733-A78)
WebSphere Host Publisher: Part of iSeries Access Family and WebSphere
Integration Offering V1.0 (5722-XW1 and 5733-A53)
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