Sun Storage 2500, 2500-M2, and 6000 Arrays: Performance is Slow on an Apparently Optimal Array
Last updated on DECEMBER 22, 2014
Applies to:Sun Storage 2530-M2 Array - Version Not Applicable and later
Sun Storage Flexline 380 Array - Version Not Applicable and later
Sun Storage 6580 Array - Version All Versions and later
Sun Storage 6780 Array - Version All Versions and later
Sun Storage 2510 Array - Version Not Applicable and later
Information in this document applies to any platform.
A performance problem has been isolated to a Sun Storage 2500, 2500-M2, or 6000 array. Anything which accesses data on the array experiences an obvious latency, far exceeding normal operation. Monitoring utilities (such as iostat) will report the disks up to 100% busy with high service times. Typical jobs are taking up to 3 or 4 times longer to complete. All evidence clearly points to a problem on the array. However, at first glance, Common Array Manager (CAM) reports no problems related to performance.
- There are no failed, expired or charging batteries.
- There are no volumes not on preferred path.
- There are no degraded or reconstructing volumes.
- Common Array Manager (CAM) reports read and write cache active for all volumes.
- If there are any alarms, they are unrelated to performance (Such as firmware not at baseline)
There have been no obvious changes to the array. There may have been some scheduled maintenance, repairs, or resets, but nothing which would identify a true cause and effect.
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