Allen,
I don't actually have anything I LIKE on any platform except the
mainframe!
On AIX, at least I can see %busy on the SCSI bus that has tape - I can
tell something is going on, or not.
And on Windows I can get %idle time on disk, but NOTHING on tape.
Any suggestions?
Wanda
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Allen S. Rout
Sent: Friday, November 11, 2005 11:40 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Tape monitoring? was: Re: Platform change to Windows?
==> On Wed, 9 Nov 2005 16:38:47 -0500, "Prather, Wanda"
<Wanda.Prather AT JHUAPL DOT EDU> said:
> I've talked with people from Tivoli and from Microsoft and from SHARE;
> there is NO instrumentation in Windows that will let you monitor what
is
> going on over a non-disk I/O bus. You hook tape to a Windows host,
and
> it's a mystery what happens. When I'm doing tape-to-tape operations,
I
> can't tell WHERE the bottleneck is. I don't have a really good notion
> of how much data you can push through a Windows box, given you have
> multiple HBA's/SCSI connections, but there is only 1 or 2 internal
> buses. I can't tell how much memory is being used for the TAPE I/O
> buffers, or if that is an issue.
Wanda, could I elicit a short summary of how you like to monitor tape
bandwidth? What tools do you like, &c?
- Allen S. Rout
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