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MSA 2050-RAID 6, Block-level data striping with double distributed parity, over multiple enclosures

 
timocoz
Occasional Contributor

MSA 2050-RAID 6, Block-level data striping with double distributed parity, over multiple enclosures

Good afternoon HPE Community,

Regarding the MSA 2050 Best Practices doc, it states the following: 

Create disk groups across disk enclosures....HPE recommends striping disk groups across shelf enclosures to enable data integrity in the event of an enclosure failure. A disk group created with RAID 1, 10, 5, or 6 can sustain one or more disk enclosure failures without loss of data depending on RAID type. Disk group configuration should consider MSA drive sparing methods such as global and dynamic sparing.”  

What I can't find anywhere ( (CLI, SMU guides, Siesmic, etc.) are specifics.  Client needs to know how many enclosures they can span a RAID 6 group across.  I can't find any limits/maximums regarding enclosures.  Could one put the maximum RAID 6 disk group of 10 drives across 5 enclosures (2 drives in each)?

Thanks in advance for any guidance, Tim.

P.S. this is an oppty, not currently installed.

1 REPLY 1

Re: MSA 2050-RAID 6, Block-level data striping with double distributed parity, over multiple enclosu

I hope the following MSA2050 Quickspec document will help you,

https://h20195.www2.hpe.com/v2/getdocument.aspx?docname=a00008276enw

 It is possible to scale an MSA up to a total of 8 enclosures including the array head itself.  This means connecting to it up to seven LFF or SFF enclosures or even a mix of the two, so to offer a total of either 96 LFF drives, or 192 SFF drives.

 Note that as the MSA 2050 SFF enclosure have 24 drive slots rather than the 25 of the D2700, that the total drive count is currently 192 rather than 199 drives.  However, if upgrading an existing configuration utilizing D2700 enclosures, then 199 drives are still supported.

 

Hope this helps!
Regards
Subhajit

I am an HPE employee

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