Re: backup/recovery
2001-12-23 09:37:26
Thank you Daniel! I´ve not considered this alternative.
Merry Christmas,
Anderson
Hi
How about using HSM on your Netware fileserver?
This way you get 2 things:
1. You save a lot of disk, and doesn't have to expand the disk capacity on
your fileserver that often.
2. A much more faster restore.
About 60% of the data on your fileserver can be concidered archived data,
that is rarely used by your users. Moving this to tape, but with stubfiles left
on the fileservers disk, means that the users will see all files, but files
that have been moved, taks about 15-20 seconds longer to access than normal
files.
You will also get a lot more free diskspace(about 180GB on your fileserver
that is 300GB).
The migrated data doesn't have to be restored to the fileserver in an event
of disaster. This means you only have to restore 40% of your fileserver, or
120GB.
Knozall have an HSM client for Netware called FileWizard TSM. We're running
this both on on of your customers sites, and in our own lab, and it works like
a clock.
Best Regards
Daniel Sparrman
-----------------------------------
Daniel Sparrman
Exist i Stockholm AB
Bergkällavägen 31D
192 79 SOLLENTUNA
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51
"Anderson F. Nobre" <anderson AT SOLVO.COM DOT BR>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
2001-12-22 23:09 ZW2
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Subject: backup/recovery
Hi,
I have some doubt about how to improve the recovery time of a fileserver. I
mean a fileserver with 300GB I spend 4 hour to backup. But to recover it
from scratch takes about 24 hours. I was thinking in use backupsets, but in
my opinion I just transfering the problem from client to server. So I would
spend 24 hours to generate a backupset to this node.
The reasons for the recovery is so slow compared to backup I understand that
the first reason is because I always do incremental backup, the second it´s
because I use multithreading on client and when I do the recovery is always
one session. The other reason is the fragmentation of the files on the tape,
even using colocation=yes.
I´ve already created a mgmtclass to make the backup of directories on a disk
stgpool.
Anyone have any sugestion on how to increase the speed of restore?
Regards,
Anderson
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