Review the following tunning:


Client TSM:

      - Set Ethernet speed and duplex settings (Don't rely on Auto Detect)
      - Specifies:
            tcpwindowssize          63    (recommended)           2048
(max) in KB
            tcpbufsize              32    (recommended)           2048
(max) in KB
            tcpnodelay              yes
            diskbuffsize                  32     (recommended)
1023 (max) in KB
            compression             yes

Server TSM

      - Set Ethernet speed and duplex settings (Don't rely on Auto Detect)
      - Specifies

            BufPoolSize       131072 (for server with 1 GB RAM)
            UseLargeBuffers   yes
            tcpwindowsize           63 (recommended)        2048 (max) in
KB
            tcpbuffsize       32 (recommended)        2048 (max) in KB
------ Use up to 3/4 of real memory for a dedicated TSM server

(no other applications).
            tcpnodelay        yes


And  Use dedicated networks for backup (LAN or SAN).

Regards

Miguel Sáez Sáez
IBM Certified Deployment Professional
Tivoli Configuration Manager
IT Specialist
IBM de Chile S.A.C.
mail: msaez AT cl.ibm DOT com
Phone: 562-2006638