I have done restores on NT5 from a similar config, and had NO problems.
I agree that autonegotiate is a likely culprit when the throughput is that
slow. When autonegotiate is the problem, our network guys can see errors
being recorded on the switch; ask for help there.
Another possibility is that the bottleneck is on the NT machine itself,
trying to rebuild the file system.
If you have virus checking software installed, disable it for the time
being.
If this rebuild is being done due to a failure of some sort, did anyone run
CHECKDISK on the drive before starting the restore?
Run from the TSM server command line: q db f=d
Your cache hit % should ideally be 98% or better; 96% or better works pretty
good, too.
If it's lower than 95%, that may be hurting you some (but not to the tune of
20 hours...)
As a last resort, check your TSM server's AIX errpt log, to check for disk
errors, and run IOSTAT to see if you are getting any bottlenecks on your TSM
DB I/O.
-----Original Message-----
From: Herfried Abel [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 31, 2001 7:46 AM
To: [EMAIL PROTECTED]
Subject: Re: Slow NT Restore
Phil,
Did you check the general network speed between the client and the server
( e.g. ftp put and get a large file ). If you are in a switched 100 mb
network
sometimes ( i saw it on our Compaq and RS6000 servers ) the autonegotiate
port speed / mode does not work correct. We set all components (
server/client/switch-ports) manually to 100 mb full duplex and this solved
the problem.
just a hint but maybe it helps
herfried
Phil Stockton <[EMAIL PROTECTED]>@VM.MARIST.EDU> on
31.05.2001 12:23:06
Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]>
Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
cc:
Subject: Slow NT Restore
Hi
We are trying to restore the C drive on a NT server 4.0 Service Pack 5. We
have TCPIP 100 mb full duplex. The client is 3.1.0.8 and the server is
3.1.2.90 on AIX 4.3.2.
We are observing very slow restore times. There is no waiting for tape
mounts but when I query sessions wait times of some seconds are observed,
almost as if it restores one file then goes off to do something else.
So far it has taken 20 hours to restore 850mb. All directories are held on
disk and they have been restored.
Anyone got any ideas on how to speed this up, by a factor of 10 or so.
Regards
Phil Stockton
RS Components Ltd
Corby
Northants
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