Hi, TSM 3.7.4 with a NT 4 with SP6 in a NT cluster environment. Library = IBM 3502-108 DLT changer Has any one seen this error before: ANR0984I Process 20 for MIGRATION started in the BACKGROUND at 16:47:12. ANR1000I Migration process 20 started for storage pool BACKUPPOOL. ANR2017I Administrator ADMIN issued command: QUERY STGPOOL ANR2017I Administrator ADMIN issued command: QUERY VOLUME ANR2017I Administrator ADMIN issued command: QUERY STGPOOL ANR8337I DLT volume TEST2 mounted in drive MT1.0.0.3 (MT1.0.0.3). ANR4502W No files have been defined for automatically storing sequential volume history information. ANR1340I Scratch volume TEST2 is now defined in storage pool DLTPOOL1. ANR8302E I/O error on drive MT1.0.0.3 (MT1.0.0.3) (OP=WRITE, CC=305, KEY=0B, ASC=47, ASCQ=00, SENSE=F0.00.0B.00.00.80.00.16.00.00.00.00.47.00.00.00.00.00.80- .00.72.00.00.0A.65.00.83.E9.A7., Description=Drive failure). Refer to Appendix B in the 'Messages' manual for recommended action. ANR1411W Access mode for volume TEST2 now set to "read-only" due to write error. ANR4502W No files have been defined for automatically storing sequential volume history information. ANR1341I Scratch volume TEST2 has been deleted from storage pool DLTPOOL1. ANR8468I DLT volume TEST2 dismounted from drive MT1.0.0.3 (MT1.0.0.3) in library LB0.0.0.3. I have checked the tapes and they are set to writable (IE the orange tab is not showing) The tape gets puled into the read head in the drive but this is what I get. I have also tried several tapes of different manufactures. This is the configuration. tsm: NMRIOESRV01>q stgpool Storage Device Estimated Pct Pct High Low Next Pool Name Class Name Capacity Util Migr Mig Mig Storage (MB) Pct Pct Pool ----------- ---------- ---------- ----- ----- ---- --- ----------- ARCHIVEPOOL DISK 0.0 0.0 0.0 90 70 BACKUPPOOL DISK 25.0 98.4 98.4 90 70 DLTPOOL1 DLTPOOL1 DLTCLASS1 17,920,000 0.0 0.4 90 70 .0 SPACEMGPOOL DISK 0.0 0.0 0.0 90 70 tsm: NMRIOESRV01>q stgpool dltpool1 f=d Storage Pool Name: DLTPOOL1 Storage Pool Type: Primary Device Class Name: DLTCLASS1 Estimated Capacity (MB): 17,920,000.0 Pct Util: 0.0 Pct Migr: 0.4 Pct Logical: 100.0 High Mig Pct: 90 Low Mig Pct: 70 Migration Delay: 0 Migration Continue: Yes Migration Processes: Next Storage Pool: Reclaim Storage Pool: Maximum Size Threshold: No Limit Access: Read/Write Description: Overflow Location: Cache Migrated Files?: Collocate?: No Reclamation Threshold: 60 Maximum Scratch Volumes Allowed: 500 Delay Period for Volume Reuse: 0 Day(s) Migration in Progress?: No Amount Migrated (MB): 0.00 Elapsed Migration Time (seconds): 0 Reclamation in Progress?: No Volume Being Migrated/Reclaimed: Last Update by (administrator): ADMIN Last Update Date/Time: 11/30/2000 11:31:19 tsm: NMRIOESRV01>q drive f=d Library Name: LB0.0.0.3 Drive Name: MT1.0.0.3 Device Type: DLT Device: MT1.0.0.3 ON LINE: Yes Element: 16 Allocated to: Last Update by (administrator): ADMIN Last Update Date/Time: 11/29/2000 12:56:26 Cleaning Frequency (Gigabytes/ASNEEDED/NONE): NONE tsm: NMRIOESRV01>q devclass Device Device Storage Device Format Est/Max Mount Class Access Pool Type Capacity Limit Name Strategy Count (MB) --------- ---------- ------- --------- ------ -------- ------ DISK Random 3 DLTCLASS1 Sequential 1 DLT DRIVE 0.0 DRIVES tsm: NMRIOESRV01>q devclass dltclass1 f=d Device Class Name: DLTCLASS1 Device Access Strategy: Sequential Storage Pool Count: 1 Device Type: DLT Format: DRIVE Est/Max Capacity (MB): 0.0 Mount Limit: DRIVES Mount Wait (min): 60 Mount Retention (min): 60 Label Prefix: ADSM Drive Letter: Library: LB0.0.0.3 Directory: Server Name: Retry Period: Retry Interval: Twosided: Last Update by (administrator): ADMIN Last Update Date/Time: 11/29/2000 12:56:26 Apologies for the long email but I wanted to get as much information as possible to the list. Regards, Geoff Pusey Tivoli Advisory Consultant Tivoli Systems. Office : +44 (0)1753 896896 Mobile : +44 (0) 780 8203704 Email : [EMAIL PROTECTED]