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MSA 2040 13TB LUN is Recognized 11.82TB in ESXi 6.7

 
MGRF
Occasional Contributor

MSA 2040 13TB LUN is Recognized 11.82TB in ESXi 6.7

Hello everybody

I think the topic clearly states my problem.

9 * 1.8 TB Disks are RAID-5ed together So a total space of ~14.4 TB is available. I created a 13 TB LUN in this linear disk group (which is shown as 12.9 TB in MSA SMU). So far so good. But all my hosts which are ESXi 6.7 only detect 11.82 TB of this storage. Here are snapshots of MSA and ESXi

ESXi

MSA

Any help would be appreciated.

Regards

3 REPLIES 3

Re: MSA 2040 13TB LUN is Recognized 11.82TB in ESXi 6.7

This is likely a TB (Base 10) vs TiB (Base 2) “loss”

All HDD vendors present their disk capacities in Base 10.  Most file systems present their disk capacities in Base 2.

On the MSA, change the default “base preference” to base 2 under "User Management"

 

Hope this helps!
Regards
Subhajit

If you feel this was helpful please click the KUDOS! thumb below!

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MGRF
Occasional Contributor

Re: MSA 2040 13TB LUN is Recognized 11.82TB in ESXi 6.7

Hi, Exactly the correct answer.

Now I should calculate why a 9*1.8T RAID 5 only gives me 10.9 TiB ;)

Even if a 1.8 disk is about 1650GB

 

Re: MSA 2040 13TB LUN is Recognized 11.82TB in ESXi 6.7

I would request you to provide me the below outputs,

show cli-parameters

show disks

show vdisks

show volumes

Otherwise you can share MSA log (store.logs) file in private chat with me. Never share MSA log in public forum.

 

Hope this helps!
Regards
Subhajit

If you feel this was helpful please click the KUDOS! thumb below!

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