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:[EMAIL PROTECTED] On Behalf Of Allen S. Rout Sent: Friday, November 11, 2005 11:40 PM To: ADSM-L@VM.MARIST.EDU Subject: Tape monitoring? was: Re: Platform change to Windows? ==> On Wed, 9 Nov 2005 16:38:47 -0500, "Prather, Wanda" <[EMAIL PROTECTED]> 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
