I had a client that ran TSM on OS/390 2.9 on a 9672-R44 with Fast Ethernet cards. The most I saw was about a 10-12GB/hour throughput on backups. I couldn't seem to push it any further than that. Now if you could move to the Gigabit adapters...then you get some throughput. It's an architecture limitation mostly. The Tokenring and FEthernet cards are still under the channel-CU-unit structure. The Gigabit cards are direct memory transfers so the normal I/O overhead of building the channel program, starting the I/O on the channel plus the disconnect time and such are removed. You should also be on OS/390 2.5 or above for the added benefits of the native BPX socket calls. Your throughput isn't much better, but the CPU utilization of the TSM address space is dramatically reduced. You can see this by doing a QUERY SESSION, the Comm. Method should say BPX-TCP/IP.
Bill Boyer DSS, Inc. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Sascha Braeuning Sent: Tuesday, August 20, 2002 6:27 AM To: [EMAIL PROTECTED] Subject: Data transfer rates with TSM for OS/390 Hi all, We've got a TSM-Server on OS/390. At the moment the server is connected to LAN via TokenRing Interface (16 MBit/s). What we get for data transfer rates is 1.5 MByte/s. Now we have to backup some servers with a capacity of 300 GB. We think, that a change to a Fast-Ethernet-Adapter (exists on the OS/390) will bring some advantages for the data transfer rate and backup can perform within 12 hours. Is there anyone, who has an TSM on OS/390 with Fast-Ethernet or TokenRing and could send me some Information about his transfer rates? I'am happy to hear from you! MfG Sascha Brduning Sparkassen Informatik, Fellbach OrgEinheit: 6322 Wilhelm-Pfitzer Str. 1 70736 Fellbach Telefon: (0711) 5722-2144 Telefax: (0711) 5722-1630 Mailadr.: [EMAIL PROTECTED]