[3dem] RAID question for K2/K3 users

[Ruben Diaz Avalos]

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)
>       https://urldefense.com/v3/__http://iubemcenter.indiana.edu__;!!Mih3wA!BGu3hTiGpfoAi7VAP2TVYb6HSxTf8bT9Yjivsar0OHOk5OQOmRAOW4CEAslbCx3xbb_FiePQUNrCF78$ 
> <https://urldefense.com/v3/__http://iubemcenter.indiana.edu__;!!Mih3wA!HV1p7q8MKM90aKMVu_thfmzPEZhCpnNSu2mSsEobLxBK-wFl1HMD93m6ng71u3LxL3bVhcQ4rn7F5N8s6icWnzw$>
> _______________________________________________
> 3dem mailing list
> 3dem at ncmir.ucsd.edu
> https://mail.ncmir.ucsd.edu/mailman/listinfo/3dem
>


-- 
**********************************************
Ruben Diaz Avalos,
La Jolla Institute for Immunology,
9420 Athena Circle Dr.,
La Jolla, CA 92037
(858)752-6960
**********************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.ncmir.ucsd.edu/pipermail/3dem/attachments/20240229/e2bee7a4/attachment.html>