Performance AX4-5F RAID 1/0

Question

Hi all, I have an ax4-5F and I'm setting it in raid 1/0, but I'm having performance problems. All disks are SATA II 7200 RPM. Setting up RAID 1 with 1 disk (1+1). Performance is 80 MB/sec Setting up RAID 1/0 with 2 disks (2+2). Performance is 160 MB/sec Setting up RAID 1/0 with 3 or 4 or 5 or 6 disks (3+3) or (4+4) or (5+5) or (6+6). Performance is 160 MB/sec I believe that the performance should be higher. What may be occurring that the performance is not increased? Thanks all

chiodp · Answer

I don't think your problem is related to the clariion , but seems to me you rich the max your host can perform but I'm only guessing .

160Mb/s is almost the maximum you can have from one HBA 2 gb .

Can you please specify what is your configuration ?

and also what kind of test you running ?

Block size ?
How many threads ?
also the OS you using and if you perform the test on raw device or file system ?

Thanks

Ax42 · Answer

Hello My setup:Dell 2950 III, 8 core 3.0 Ghz, 8gb RAM, 2 disks SAS 73Gb (raid 1)HBA Qlogic QLE 2462 ( 4gb )windows 2003 32 bitsI am using to test the tools: h2benchw, HDtach, PerformanceTest v6 and iometer.All the tools, same performance 160 MB/s.I used 4, 8, 16, 32, 64 and 128k, windows NTFS block size. Same performance 160 MB/s.Test on raw device and file system, same performance 160 MB/s.Today I updated the driver for Qlogic QLE2462 version of EMC 9.1.7.16 and nothing has changed.Any ideas?thanks

CLARiiON

Was this post helpful?