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Performance issues with StorageTek D173 SAN / Solaris on Sparc
Hi all.
I have a second hand Storagetek D173 disk array, that I am struggling with performance (or lack of) It has six 10k, 73GB disks and dual 1Gbit controllers (everything is fibre) Currently all the disks are configured in RAID0 (it was RAID5, but thought it might have been that slowing it down) It is connected to an Emulex 7000E in a new Fujitsu PrimePower server running Sol9. The problem is the max speed I have ever managed is 18MB/s (RAID0 across six spindles!) This is doing a sequential copy onto or off the array. eg 1-2 GB sized files In comparison copying between the two internal disks (10k, 73GB) I get 25MB/s. If I watch the Performance Monitor in Santricity I only get 50 IO/s max, which seems very low Any ideas what to kick, or do I expect to much? Thanks for any help Steve |
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