ADSM-L

Re: Poor restore performance Windows-client

2004-10-28 02:29:52
Subject: Re: Poor restore performance Windows-client
From: TSM_User <tsm_user AT YAHOO DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 27 Oct 2004 23:29:40 -0700
I haven't seen this whole thread so I bet it was brought up but remember that 
both the NIC's and the switch connections should be set to link and line speed. 
So if it is 100 FULL then set everything to 100 FULL including the switch 
ports. Anything at AUTO AUTO will give you problems.


John Naylor <John.Naylor AT SCOTTISH-SOUTHERN.CO DOT UK> wrote:
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
Behalf Of Mike Hagery
>Last week we did a restore of 15 MB and 4000 small html-files.
>The performance was bad, it took 57 minutes to restore the
>4000 html-files and 15 MB.
>
>The back-up is very fast. FTP between client and server is
>also fast. A restore of a big(ger) file is no problem.
>Collocation is on and data is only on one tape. During restore
>we see no mediawaits, so that's not the problem.

If you really want to nail this down
Move the data off the tape onto disk and do the restore again
If its no faster, its not the tape and you need to be looking at things at
the client end
If its a lot faster its almost certainly the fact that there is a lot of
data and files on the tape (guess ) and your 4000 small files
are not neatly in one place but splattered randomly.

John



**********************************************************************
The information in this E-Mail is confidential and may be legally
privileged. It may not represent the views of Scottish and Southern
Energy Group.
It is intended solely for the addressees. Access to this E-Mail by
anyone else is unauthorised. If you are not the intended recipient,
any disclosure, copying, distribution or any action taken or omitted
to be taken in reliance on it, is prohibited and may be unlawful.
Any unauthorised recipient should advise the sender immediately of
the error in transmission.

Scottish Hydro-Electric, Southern Electric, SWALEC and S+S
are trading names of the Scottish and Southern Energy Group.
**********************************************************************

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around
http://mail.yahoo.com