[3dem] RAID question for K2/K3 users
Ruben Diaz Avalos
rdiaz at lji.org
Thu Feb 29 15:19:17 PST 2024
Hi David,
With both of our K3 cameras, we have gone through the same process. Gatan
provided the servers with ~8TB Raid0 disks, which on the Krios promptly
failed, so we got them changed to an array of 20 2TB SSD disks in a Raid5
configuration. No problems with writing to them at all, even when the
microscope is collecting ~800 images/hr and simultaneously moving them to
our storage server.
Ruben.
On Thu, Feb 29, 2024 at 3:00 PM Morgan, David Gene <dagmorga at indiana.edu>
wrote:
> Hi,
>
> We had an issue with a disk in the RAID array on our K3 last week. It
> fortunately turned out to be a non-fatal error, but it did make me realize
> that this is a RAID0 array and that a real disk error could result in
> troublesome loss of data.
>
> I asked a Gatan engineer who is here installing a system on a new
> microscope about switching to RAID5 or RAID6. His comment was that company
> policy is RAID0 only, but that he didn't see any reason other than a loss
> in write speed that could result from switching RAID type.
>
> Has anyone changed the RAID on a Gatan computer to something else, and if
> so, have you had any issues?
>
> Thanks in advance.
> --
> politics is more difficult than physics.
> A. Einstein
>
> David Gene Morgan
> Electron Microscopy Center
> 047E Simon Hall
> IU Bloomington
> 812 856 1457 (office)
> 812 856 3221 (3200)
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--
**********************************************
Ruben Diaz Avalos,
La Jolla Institute for Immunology,
9420 Athena Circle Dr.,
La Jolla, CA 92037
(858)752-6960
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