What is the normal clean frequency for LTO-1 drives in a 3584? I have the drives defined to TSM with a cleaning frequency of "none", and the 3584 library set to Automatic cleaning, per recommendations. Yet, when I use the front panel of the 3584 to look at the cleaning cartridges, one has never been used, and the other has only been used 4 times. We have had this library for nearly 2 years now. I started looking at this because of the number of tapes that are marked read-only or unavailable per night (anywhere from one to 7 so far, usually 2 or 3 per night). The eight drives show as follows:
Drive1 Library Loads: 10391 Library Unloads: 10381 Drive Loads: 867 (drive1 has been reset recently) MB Written: 2903279 MB Read: 1923642 Cleans: 0 -------------------------- Drive2 Library Loads: 10023 Library Unloads: 10015 Drive Loads: 6535 MB Written: 49313622 MB Read: 26764547 Cleans: 0 -------------------------- Drive3 Library Loads: 10239 Library Unloads: 10234 Drive Loads: 1598 MB Written: 10083308 MB Read: 5886656 Cleans: 0 -------------------------- Drive4 Library Loads: 6877 Library Unloads: 6873 Drive Loads: 6461 MB Written: 44438571 MB Read: 25808491 Cleans: 0 -------------------------- Drive5 Library Loads: 6528 Library Unloads: 6527 Drive Loads: 6705 MB Written: 47722355 MB Read: 28614867 Cleans: 0 -------------------------- Drive6 Library Loads: 1933 Library Unloads: 1932 Drive Loads: 2144 MB Written: 11874084 MB Read: 6888474 Cleans: 0 -------------------------- Drive7 Library Loads: 2051 Library Unloads: 2050 Drive Loads: 2823 MB Written: 27765506 MB Read: 7691746 Cleans: 0 -------------------------- Drive8 Library Loads: 2102 Library Unloads: 2101 Drive Loads: 2265 MB Written: 12299072 MB Read: 8002016 Cleans: 0 These tape drives have transferred thousands of terabytes of data (what's that.. exabyte?), apparently without cleanings. What can I check to find out why, other than what I mentioned above (Lib set to AUTO, and drives set in TSM to none). Thanks in advance Todd