If he has more than two tape drives he may try increasing the number of drives. Also, a couple hours before his backups each night I recommend that he do a force migration by updating the LO and HI to appropriate numbers and after the migration is complete set it back to normal. This way he starts out with the backup pool trimmed.
Ultimately, this backuppool is too small for this configuration. The recommendation is about the size of what you are going to backup to a pool during an incremental cycle. -----Original Message----- From: Kelly Lipp [mailto:[EMAIL PROTECTED]] Sent: Sunday, January 20, 2002 11:01 PM To: [EMAIL PROTECTED] Subject: Re: Storage Pool Migration and Mediawait question/problem This happens if the disk pool fills and migration can't keep up. When the client starts a transaction with the server the server is asked to create enough room for the data. In the case where the diskpool is full, that space will be in the nextstg pool usually tape. So that client is then waiting for media. This happens to most of the clients at this point resulting in the q session you are seeing. Backuppool is not very large in your configuration. You might try lowering high migration to 50 and see if migration can stay ahead of newly arriving data. Kelly J. Lipp Storage Solutions Specialists, Inc. PO Box 51313 Colorado Springs, CO 80949 [EMAIL PROTECTED] or [EMAIL PROTECTED] www.storsol.com or www.storserver.com (719)531-5926 Fax: (240)539-7175 -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Wouter V Sent: Friday, January 18, 2002 4:21 PM To: [EMAIL PROTECTED] Subject: Storage Pool Migration and Mediawait question/problem Why does the migration process cause a (large) delay for my backups (mediawait) ? I don't understand why backup can't continue while TSM is migrating the data from disk to tape ? There is still enough place in the diskpool ! Can anybody give me any hints are recommandations ? Thank you in advance !! Wouter V. Storage Device Estimated Pct Pct High Low Next Stora- Pool Name Class Name Capacity Util Migr Mig Mig ge Pool (MB) Pct Pct ----------- ---------- ---------- ----- ----- ---- --- ----------- ARCHIVEPOOL DISK 0.0 0.0 0.0 90 70 BACKUPPOOL DISK 16,720.0 63.3 57.1 60 30 PTAPE_POOL PTAPE_POOL TAPE_CLASS 1,907,340. 4.6 100.0 100 0 0 SPACEMGPOOL DISK 0.0 0.0 0.0 90 70 Process Process Description Status Number -------- -------------------- ---------------------------------------------- --- 31 Migration Disk Storage Pool BACKUPPOOL, Moved Files: 42790, Moved Bytes: 1,297,846,272, Unreadable Files: 0, Unreadable Bytes: 0. Current Physical File (bytes): 2,043,904 Current output volume: 000013. 32 Migration Disk Storage Pool BACKUPPOOL, Moved Files: 6854, Moved Bytes: 1,225,912,320, Unreadable Files: 0, Unreadable Bytes: 0. Current Physical File (bytes): 14,446,592 Current output volume: 000006. Sess Comm. Sess Wait Bytes Bytes Sess Platform Client Name Number Method State Time Sent Recvd Type ------ ------ ------ ------ ------- ------- ----- -------- ------------- 11,683 ShMem IdleW 22.6 M 1.7 K 1.1 K Node AIX BWB_ONT 11,684 ShMem Run 0 S 18.7 K 6.2 G Node AIX BWB_ONT 11,685 ShMem IdleW 11.3 M 858 821 Node AIX BWB_ONT 11,697 Tcp/Ip IdleW 27.1 M 3.5 M 9.0 K Node WinNT NEWTON 11,698 Tcp/Ip MediaW 20.5 M 714 235.8 M Node WinNT NEWTON 11,703 Tcp/Ip IdleW 21.1 M 3.4 M 650 Node WinNT EINSTEIN 11,704 Tcp/Ip MediaW 21.7 M 354 22.3 K Node WinNT EINSTEIN 11,705 Tcp/Ip MediaW 21.6 M 354 3.9 K Node WinNT EINSTEIN 11,706 Tcp/Ip IdleW 20.6 M 34.8 M 840 Node WinNT EINSTEIN 11,709 Tcp/Ip IdleW 18.6 M 465.0 K 1.1 K Node WinNT ACSL1 11,710 Tcp/Ip MediaW 19.0 M 354 22.3 K Node WinNT ACSL1 11,711 Tcp/Ip IdleW 18.5 M 680.0 K 501 Node WinNT ACSL1 11,712 Tcp/Ip MediaW 18.9 M 354 8.9 K Node WinNT ACSL1 11,714 Tcp/Ip IdleW 16.4 M 1.8 M 589 Node WinNT ITF_TRA 11,715 Tcp/Ip MediaW 16.7 M 354 22.2 K Node WinNT ITF_TRA 11,716 Tcp/Ip IdleW 16.6 M 515 819 Node WinNT ITF_TRA 11,717 Tcp/Ip MediaW 16.5 M 354 5.3 K Node WinNT ITF_TRA 11,718 Tcp/Ip IdleW 9.5 M 2.2 M 546 Node WinNT BWB_TRA1 more... (<ENTER> to continue, 'C' to cancel) 11,720 Tcp/Ip MediaW 9.8 M 354 22.2 K Node WinNT BWB_TRA1 11,721 Tcp/Ip MediaW 9.7 M 360 10.7 K Node WinNT BWB_TRA1 11,722 Tcp/Ip IdleW 9.1 M 2.9 M 534 Node WinNT BWB_TRA1 11,723 Tcp/Ip IdleW 7.1 M 3.2 M 541 Node WinNT NOTES_TRA 11,724 Tcp/Ip IdleW 9.4 M 2.6 K 1.1 K Node WinNT NOTES_TRA 11,725 Tcp/Ip MediaW 7.1 M 409 64.0 M Node WinNT NOTES_TRA 11,726 Tcp/Ip MediaW 9.2 M 406 424.5 K Node WinNT NOTES_TRA 11,727 Tcp/Ip IdleW 7.2 M 2.4 M 611 Node WinNT BSC_NT3_TRA 11,728 Tcp/Ip MediaW 7.3 M 354 22.3 K Node WinNT BSC_NT3_TRA 11,729 Tcp/Ip IdleW 6.6 M 1.7 M 537 Node WinNT BSC_NT3_TRA 11,730 Tcp/Ip MediaW 7.1 M 354 5.2 K Node WinNT BSC_NT3_TRA
