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 Post subject: Re: Swapping hdd's for SSD's 7400
PostPosted: Thu Jan 05, 2023 4:54 am 

Joined: Mon Apr 18, 2022 3:27 am
Posts: 19
Location: NL
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!


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 Post subject: Re: Swapping hdd's for SSD's 7400
PostPosted: Fri Jan 13, 2023 7:20 am 

Joined: Mon Apr 18, 2022 3:27 am
Posts: 19
Location: NL
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 :)


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 Post subject: Re: Swapping hdd's for SSD's 7400
PostPosted: Fri Jan 13, 2023 12:58 pm 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 1469
Location: Europe
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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