[3dem] RAID array on K3 server

[Lance Wilson]

Hi Terje,
Your best option would be to look at doing RAID 6. That would take two
drives for parity data, meaning you could lose two drives before complete
data loss. It will depend on the RAID card how you can implement it.  If
the card can't do RAID 6 it very likely can do RAID10 which will give you
the speed advantages but lose 1/2 the space.

Cheers,

Lance
--
Dr Lance Wilson
Characterisation Virtual Laboratory (CVL) Coordinator &
Senior HPC Consultant
Ph: 03 99055942 (+61 3 99055942)
Mobile: 0437414123 (+61 4 3741 4123)
Multi-modal Australian ScienceS Imaging and Visualisation Environment
(www.massive.org.au)
Monash University


On Fri, 1 Nov 2019 at 08:39, Dokland, Terje <dokland at uab.edu> wrote:

> Does anybody have experience setting up the RAID array on the server that
> comes with the Gatan K3 camera? This computer has 10 SSDs in a RAID array
> that is used for data capture. However, the standard setup is in RAID 0
> (striping), which means that if one drive fails, the data on all 10 drives
> are lost. While this is presumably done for added speed, this doesn’t seem
> necessary, since you can equally well save the data to one of the other
> drives or even to an external USB drive with no noticable reduction in
> speed.
>
> It seems to me that it would make a lot more sense to format the drives in
> RAID 1 for data redundancy (or even without RAID), so I’m curious if
> anybody has done that or if there is a paritcular problem doing so.
>
> Thanks for any advice,
> Terje
>
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