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SCSI Timeouts

Ayman Altounji
Valued Contributor

SCSI Timeouts

We have 5 computers in a Fiber San environment. Each of them had scsi timeouts and retry problems. Our fiber san environment is composed of a fiber hub, storage works fc tape controller and a DLT891 Library. Due to problems in the past our firmware in all of the respective devices is up to date. Both of our 35/70 DLT drives in the unit use V97 (2561) firmware.
Our fibre channel tape controller is using C9913M. Also we adjusted the scsi ids so the robot uses scsi id 1, and the dlt drives uses scsi ids 2 and 3. We also make sure that we clean our tape drives regular and purchased a supply of cleaning tapes.

We have changed cables, changed terminators, changed drives and still cannot get beyond this problem. After the timeouts get very bad nothing works anymore and then I have to shutdown the tape drive and the fibre channel tape controller to get everything working again. It appears that we can work well about 1 week before things start to go bad.

In the NT event view log, here is what was reported.

Event ID: 9, Source: cpqfcalm

The device did not respond within the timeout period.

Data Bytes

0000: 0f 00 10 00 01 00 6a 00 ......j.
0008: 00 00 00 00 09 00 04 c0 .......?
0010: 01 01 00 50 00 00 00 00 ...P....
0018: 5b a1 79 00 00 00 00 00 [?y.....
0020: 00 00 00 00 00 00 00 00 ........
0028: 00 00 00 00 00 00 00 00 ........
0030: 02 00 00 00 07 00 00 00 ........

Data Words

0000: 0010000f 006a0001 00000000 c0040009
0010: 50000101 00000000 0079a15b 00000000
0020: 00000000 00000000 00000000 00000000
0030: 00000002 00000007

There are other similar cpqfcalm messages. If you need to see them, that
could be arranged. We are running windows nt 4.0 with sp6a. We are using Arcserve 2000 with sp3.
1 REPLY
Ayman Altounji
Valued Contributor

Re: SCSI Timeouts

Hi. Sugg to call in for storageworks special at Compaq since they will be the best technical advice support possible here. Hope this help.