Hello, 1. question : I did test with TDP for R3 ( 2.7 ) on NT ( SAP 3.1 ) , TSM client 3.7.2 and TSM server OS/390 3.7.3. I set up R3 client for 8 parallel sessions to disk storage pool consisting from 5 volumes , disk pool is linked to tape pool - after start of SAP backup one session went into media wait and all tapes ( 2 ) assignet to tape pool mounted medias ( I understand it 7 session - 5 to disk , 2 to tape ) . I decreased MAX_SESSIONS to 4 and everything run OK - 4 parallel session , no tape mounts . Do i need separate disk storage pool volume for every session ? 2. question : How is backint parametr -w verify handled by TDP for R3 ? Yours Petr Prerost e-mail [EMAIL PROTECTED]