[Bi-users] Reminder: Retiring filesystems rossby25 and smhid18

[Fredrik Nyström]

Dear Accumulus storage users,

one month left until we retire rossby25 and smhid18.

We will power off related equipment shortly after October 31. If you 
have lot's of data left to copy, I suggest you start now.


One additional rsync flag that you should not use: -S (--sparse)

When using "rsync -S" on Accumulus Lustre filesystems, destination file 
may end up taking up more space than apparent file size. This has been 
observed with certain NetCDF files, possibly also affects GRIB files?


If you ask for assistance copying data from rossby25 or smhid18, if 
possible, please try to indicate if there are any hard links present in 
the source tree or not (We don't want to use "-H" option unless 
necessary). Contact support here: NSC <smhi-support at nsc.liu.se>


Kind Regards / Fredrik Nyström, NSC

On 2022-08-24 13:27, Fredrik Nyström wrote:
> Dear Accumulus storage users,
> 
> on Monday October 31 2022 we will retire the following filesystems:
> 
>     /nobackup/rossby25
>     /nobackup/smhid18
> 
> Please copy any data that you wish to keep before this date.
> 
> We would also appreciate if you from now on try to avoid filling up 
> these filesystems with more precious data. Temporary data that does not 
> need to be copied is ok.
> 
> At this time there is plenty of space available on rossby27 and smhid20.
> 
> 
> If you need assistance copying data from rossby25, and smhid18, 
> feel free to contact NSC <smhi-support at nsc.liu.se>.
> 
> 
> You may ask why these fairly new filesystems are retired now. A service 
> life of 2 years is according to plan since rossby25 and smhid18 was 
> built using hardware from previously retired systems. See announcement 
> from October 2020:
> https://lists.nsc.liu.se/mailman/public/bi-users/2020-October/000297.html
> 
> 
> Kind Regards,

-- 
Fredrik Nyström, National Supercomputer Centre
freny at nsc.liu.se