HPE Storage Users Group
https://3parug.com/

Swapping hdd's for SSD's 7400
https://3parug.com/viewtopic.php?f=18&t=3862		 Page 2 of 2
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.
Page 2 of 2 All times are UTC - 5 hours
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/