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Swapping hdd's for SSD's 7400 https://3parug.net/viewtopic.php?f=18&t=3862 |
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Author: | 3parnewb [ Thu Jan 05, 2023 4:54 am ] |
Post subject: | Re: Swapping hdd's for SSD's 7400 |
MammaGutt wrote: 3parnewb wrote: Yes I have 8 cages in total. Can you also help me with how I can remove the HDD's + free up licenses the right way? Last time I just pulled a drive and that's not the way haha. Had to do a lot of repair. Long story short you need to set the PDs to ldalloc off, then move all chunklets off the drive, remove spares before dismissing the PD. I’ve seen a excel spreadsheet in this forum a few times but I never got the command that supposedly should move all chunklets for you to work…. Thanks a lot man! |
Author: | 3parnewb [ Fri Jan 13, 2023 7:20 am ] |
Post subject: | Re: Swapping hdd's for SSD's 7400 |
So everything worked out, which is great. So now I have 12 drives spread across 6 cages. Richt now I'm running a Raid5 3+1 CPG. What would you recommend for CPG? It's a 4 node cluster, but I think I already mentioned that |
Author: | MammaGutt [ Fri Jan 13, 2023 12:58 pm ] |
Post subject: | Re: Swapping hdd's for SSD's 7400 |
3parnewb wrote: So everything worked out, which is great. So now I have 12 drives spread across 6 cages. Richt now I'm running a Raid5 3+1 CPG. What would you recommend for CPG? It's a 4 node cluster, but I think I already mentioned that I’m no fan of RAID5 and your only option for RAID6 would be 4+2 with 33% RAID overhead. If you accept RAID5, then 5+1 would be most efficient but it wouldn’t make a huge difference. 3PAR uses chunklets so the load would be distributed regardless. |
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