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 Post subject: Recommendation for CPG on new shelf
PostPosted: Fri Mar 01, 2019 11:51 am 

Joined: Thu Nov 30, 2017 11:20 am
Posts: 67
Location: WI
Good day all.

I am filling out a new shelf (M6710) next week with 24 FC drives. I have heard that RAID6 was the preferred standard these days but have never really had to start a new CPG from scratch.

Should I just take the defaults from the 3PAR on RAID6 or is there any way to figure out which would be the best set size ?

This will house SQL volumes for our DR Site if that makes any difference.

Any insight would be great.

Thanks!


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 Post subject: Re: Recommendation for CPG on new shelf
PostPosted: Fri Mar 01, 2019 3:21 pm 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 842
Location: Europe
You don't need a new CPG when adding a new cage. If you do nothing on a 7200/8200 it will do tunesys and balance existing data on new drives (if they match an existing CPG).

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 Post subject: Re: Recommendation for CPG on new shelf
PostPosted: Sat Mar 02, 2019 9:26 pm 
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Joined: Tue Aug 18, 2009 10:35 pm
Posts: 1218
Location: Dallas, Texas
3PAR does not use a disk based raid, but Raid6 is the preferred choice for CPGs.

Adding more drives does not require (or recommend) creating a new CPG.

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Richard Siemers
The views and opinions expressed are my own and do not necessarily reflect those of my employer.


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 Post subject: Re: Recommendation for CPG on new shelf
PostPosted: Mon Mar 04, 2019 10:38 am 

Joined: Thu Nov 30, 2017 11:20 am
Posts: 67
Location: WI
Thanks all.

I didnt give enough information but we currently have no FC drives in this 3PAR which is why I mentioned creating the new CPG.


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