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 Post subject: Free space - Repetitio mater studiorum est :D
PostPosted: Fri Aug 27, 2021 7:56 am 

Joined: Thu Oct 26, 2017 1:21 am
Posts: 95
I know that we had this topic but I stee having trouble calculating/finding free space on my Primera sistem. Can please someone help.. The numbers I'm seeing on Primera UI doesn't make sense...


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 Post subject: Re: Free space - Repetitio mater studiorum est :D
PostPosted: Fri Aug 27, 2021 9:41 am 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 1327
Location: Europe
LDfree in showspace -cpg is as correct as it will get.

Remember this number excludes any possible saving with compression/dedupe.

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 Post subject: Re: Free space - Repetitio mater studiorum est :D
PostPosted: Fri Aug 27, 2021 12:23 pm 
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Joined: Tue Aug 18, 2009 10:35 pm
Posts: 1301
Location: Dallas, Texas
Also Infosight now shows capacity utilization in both RAW and usable, as of a recent update.

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 Post subject: Re: Free space - Repetitio mater studiorum est :D
PostPosted: Tue Aug 31, 2021 1:11 am 

Joined: Thu Oct 26, 2017 1:21 am
Posts: 95
I don't still get it how of 35 tb raw it sees only 14 tb in r6?


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 Post subject: Re: Free space - Repetitio mater studiorum est :D
PostPosted: Tue Aug 31, 2021 2:14 am 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 1327
Location: Europe
sanjac wrote:
I don't still get it how of 35 tb raw it sees only 14 tb in r6?


You're not...

Out of the 35750 GiB, 7150 GiB are reserved as spare (equal of minimum 2 drives which was known as "default" in 3PAR days).
Then you're left with 28600 GiB.

Raid 6 (8+2) should give you 20% RAID overhead, so of the 28600 RAW 5720 will be lost to parity.

That leaves you with 22880 GiB or just over 22TiB of net capacity (pre datareduction).

Your SSD_r6 CPG is today 14+TB (with ~almost 4TB free that could be relased with compactcpg) and it can grow by 7+TB more.

The numbers look correct to me.

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 Post subject: Re: Free space - Repetitio mater studiorum est :D
PostPosted: Tue Aug 31, 2021 2:48 am 

Joined: Thu Oct 26, 2017 1:21 am
Posts: 95
Thank you! It makes a sense now :)


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 Post subject: Re: Free space - Repetitio mater studiorum est :D
PostPosted: Tue Aug 31, 2021 3:56 am 

Joined: Thu Oct 26, 2017 1:21 am
Posts: 95
After compact cpg


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