Hello again,
I�m having some trouble putting a Sony SDX-700V SCSI AIT-3 unit to work on FreeBSD 5.3-RELEASE.
The first issue is: it runs toooooooo slow. Transfers with tar (whithout -j, -z and such) or "cat file >/dev/sa0" go at about 800kB/s, though it should be more than 10MB/s. This wouldn�t be a big issue, but then comes the second problem...
Besides the speed, hardware compression seems to not being funcional either. I already tried every 4 possible dip switch setting for compression, but I am still not able to transfer a 180GB archive to a (should-be) 260GB medium. And when I thought I could live with that...
Third problem: tar does not (re)store all files, specially when I set block ("-b") sizes. With -b 64 and upper, tar would end perfectly and fast, but when trying to restore or list it ends prematurely; i�m now trying to test with -b 10, but it�s already taking more than 20 hours to complete the transfer, and I don�t know if it will end before this weekend. :)
There�s no change if I use tar or gtar. :(
Now for the environment:
HP ML 110 server, 2.8 GHz HT (enabled)
4x80GB SATA disks in RAID5 on a HighPoint Rocket Raid 1820A
Adaptec 2940UW or Ultra160, doesn�t matter...
I think i�m using correct cabling :) ; with the 2940UW I use a standard flat-68 and termination on the device, or, the Ultra160 goes with a terminated 2-device twisted flat cable on the card�s LVD connector (not the SE). That�s what we use for other SCSI machines too.
Is there any known issue with AIT-3 tapes? Am I missing or doing something wrong? Should I change to another backup software?
Well, thanks again for your attention. Ideas are *very* welcome.
Tulio
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