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| FC_r1 CPG https://3parug.com/viewtopic.php?f=18&t=3332 |
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| Author: | vnerd [ Wed Nov 27, 2019 1:27 pm ] |
| Post subject: | FC_r1 CPG |
7400 480 10k SAS drives We generally use a RAID5 CPG and haven't had any problems with performance. For more demanding workloads would I see any improvement using a RAID1 CPG? Thank you |
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| Author: | markinnz [ Wed Nov 27, 2019 4:23 pm ] |
| Post subject: | Re: FC_r1 CPG |
It would generate less backend (disk) I/O .. so yes you would. Would you be separating the CPGs to their own spindles ? |
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| Author: | MammaGutt [ Thu Nov 28, 2019 4:01 am ] |
| Post subject: | Re: FC_r1 CPG |
I would say it depends. If you're maxing the backend (disk drives) during workloads, RAID1 will reduce the backend write IOPS with 50%. Read IOPS will not see any difference. If you have large block size, you quickly run into fabric issues with 480 spindles in the 7400. If you're hitting a bottleneck in your fabric, RAID1 will not make a difference. |
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