> From [EMAIL PROTECTED] Fri Apr 16 19:03:20 1993
> From: "Stephen G. Roseman" <[EMAIL PROTECTED]>
> Subject: Speaking of backups...
> To: [EMAIL PROTECTED] (info AFS)
> Date: Fri, 16 Apr 93 16:48:31 EDT
> X-Mailer: ELM [version 2.3 PL11]
> Content-Length: 774
>
> Since backups are the current topic here, I'll ask an old question:
>
> How do large sites (like > 1000 volumes) do backups?
>
> We have > 10,000 volumes, and the last I tried, AFS backup wrote tape marks
> between volumes. (If doesn't any more, somebody let me know, please.) That's
> a lot of space taken up (isn't it about 2 M/tape mark = 20 Gbyte) before
> considering the data.
>
> Therefore, we currently vos dump each volume in turn to disk, and use AIX
> backup to write the volumes to tape. This takes about 10 hours/4.5 Gbyte of
> data we are dumping on an RS/6000 930.
>
> So, what are you other big sites doing? Ideas, please.
>
> Steve
>
> ----------------------------------------------------------------------------
> Steve Roseman
> Lehigh University Computing Center
> [EMAIL PROTECTED]
>
We have 7000+ volumes. The answer for us was to buy a 5 gig exabyte tape
drive. It writes tape marks that are only (OUCH!!) 100k. We then separated
applications from the user backups and continued to write them to 2 gig
drives.
If you have any more questions feel free to mail me.
thanks,
Doug Gullett
University of NC at Charlotte
