3584 Cleaning Frequency
2003-10-13 13:07:41
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
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