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IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
book

IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning

by Cathy Warrick, Craig Gordon, Benoit Granier, Keitaro Imai, Rosemary McCutchen, Brannen Proctor, Jim Sedgwick, Paulus Usong, Mary Ann Vandermark, John Wickes
December 2005
Intermediate to advanced content levelIntermediate to advanced
530 pages
18h 34m
English
IBM Redbooks
Content preview from IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
Chapter 9. Open system servers - Windows 343
Removing disk bottlenecks
Once a disk bottleneck has been detected, some of the actions that can be taken are the
following:
򐂰 Use faster disks: 15,000 rpm arrays instead of 10,000 rpm arrays on the DS6000. This will
mean migrating the data to another RANK when incorporating the new disks.
򐂰 Offload processing to another system in the network (either users, applications, or
services).
򐂰 Add more RAM. Adding memory will increase system memory disk cache, which in effect
improves disk response times.
򐂰 Spread the I/O activity across the DS6000 arrays (logs, page file, etc.).
򐂰 Since the DS6000 arrays can be RAID 5 and RAID 10, swap RAID arrays from one to the
other and take a new set of measurements. F ...
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ISBN: 0738494119Purchase book