David, I run a GigE NIC in my TSM 2-way 6H1 with all SCSI-connected storage.
GigE works very well because most of the sending nodes are on 100 Mbs with a few larger servers on GigE. That prevents the recipient - the TSM server - from being the bottleneck. The CPU load scales up with the data througput, but using Topas, I have seen as much as 80 MB/s passing through the NIC during peak backup times. And while idle % was very low (~1 % or so) the server reported no difficulties and response time to TSM Admin commands like "Q PR" was instantaneous. Tab Trepagnier TSM Administrator Laitram, L.L.C. "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> wrote on 11/10/2004 07:14:01 AM: > >Another option is to bump-up your ethernet... are you already running > a > >gigabit ethernet? We've actually bumped up the TSM server and the > large > >unix clients to Gigabit Ethernet, and it improved the throughput of > the > >backup. > > > > The 100 meg card in our TSM server is saturated during our backup > window. We are exploring moving to a gig ethernet. Did you see changes > in your TSM server when you went to the faster speeds? Higher cpu, > paging? What effects did you see in your disk/tape I/O? > > David
