Amanda users,
We are running our amanda server on Solaris 10 x86 with a
fiber connection to an SL24/LTO4 library.
Comparing this to another amanda server, same amanda and
OS versions, same jukebox/drive, we see only about 20-25%
of the tape write speed (as reported by amdump) using the
fiber connection as we do with a SCSI connection.
Sorry - lots of words.
SCSI connection runs 4-5x faster than fiber connection.
Following the suggestion found here
http://forums.zmanda.com/showthread.php?t=1250
Try setting
device_property "BLOCK_SIZE" "2 mbytes"
in the top-level of amanda.conf on the system with the fiber
connection, left the faster scsi connected server alone.
I found that # amcheck was unable to find any valid tapes
in the existing tape pool.
> amcheck -t curie
Amanda Tape Server Host Check
-----------------------------
slot 13:Found an empty or non-amanda tape.
slot 14:Found an empty or non-amanda tape.
slot 15:Found an empty or non-amanda tape.
slot 16:Found an empty or non-amanda tape.
slot 17:Found an empty or non-amanda tape.
slot 18:Found an empty or non-amanda tape.
slot 19:Found an empty or non-amanda tape.
slot 20:Found an empty or non-amanda tape.
slot 21:Found an empty or non-amanda tape.
slot 22:Found an empty or non-amanda tape.
Is the advice not valid for our config ?
Do we need to re-label tapes if we set this parameter ?
thanks,
Brian
---
Brian R Cuttler brian.cutt...@wadsworth.org
Computer Systems Support (v) 518 486-1697
Wadsworth Center (f) 518 473-6384
NYS Department of Health Help Desk 518 473-0773
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