What version of DSS you using?
Is hardware RAID an option ?
What version of DSS you using?
Is hardware RAID an option ?
See this link on running IO tests.
http://blog.open-e.com/a-few-practic.../#comment-4743
or run BST5 (NTFS formatted) http://www.nu2.nu/download.php?sFile=bst514.zip
Sequential 1MB for reads and writes
Sequential 4MB for reads and writes
Hi Gr-R, There is no hardware RAID, we're using the software RAID,and the DSS version is 4622.
Update to 5087.Originally Posted by daobang wang
Some updates to SCST that may help you.
For DSS 5087, Is there any other change except the SCST updated to 2.0.0.1? I'm afraid that will not help, because the SCST 2.0.0.1 changed as follows:
- Fixed critical issue with wrong INQUIRY page 0x80 (r3197)
- Possible crashes due to incorrect execution context estimations fixed
- Responsiveness under heavy load improved
But i will try it, thanks!
there is more than just the SCST update in the latest version.
go ahead and update, and see if it helps.
careful to read the release notes about VFD's and vmware for the update.
Hi Gr-R, please see the iozone test output for the same configuration for iscsi volume with windows client. It seems that the performance is no improve, thanks!
DSS 4622
Writer Report
64 128 256 512 1024 2048 4096
4194304 11534 18050 14847 7474 7808 9359 7804
Re-writer Report
64 128 256 512 1024 2048 4096
4194304 32558 36580 42025 7321 7794 9305 7698
Reader Report
64 128 256 512 1024 2048 4096
4194304 49648 50696 53375 58658 62220 45873 50432
Re-reader Report
64 128 256 512 1024 2048 4096
4194304 59039 58341 53921 67305 62955 45322 51352
Random Read Report
64 128 256 512 1024 2048 4096
4194304 7080 8071 10063 18171 26656 31538 39510
Random Write Report
64 128 256 512 1024 2048 4096
4194304 8988 8486 8412 5328 6972 8994 7583
DSS 5087
Writer Report
64 128 256 512 1024 2048 4096
4194304 9734 7995 8227 6551 6958 7051 8845
Re-writer Report
64 128 256 512 1024 2048 4096
4194304 36120 36559 37083 6525 6792 7146 8865
Reader Report
64 128 256 512 1024 2048 4096
4194304 51351 50456 51729 59453 61986 44904 50413
Re-reader Report
64 128 256 512 1024 2048 4096
4194304 59174 58035 59063 63760 63601 45156 49738
Random Read Report
64 128 256 512 1024 2048 4096
4194304 7147 7871 12205 16032 26345 34340 37549
Random Write Report
64 128 256 512 1024 2048 4096
4194304 10066 8143 7853 5529 6492 7005 8671