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Backup Exec 9.1 1x7 Autoloader slow

I recently went from our old backup using a Dell LTO1 Ultrium 1-SCSI single drive and upgraded to a robotic library Exabyte Magnum 1x7 Autoloader.  

When I initially installed the drive, I used the Windows driver and it loaded.  The backup went quickly and fast as I expected.  I then uninstalled that driver and installed the Veritas driver so it will work with my BE software.  I used the following driver: http://seer.support.veritas.com/docs/273853.htm.  It seemed to install correctly, BE sees the device as an robotic library and it will work.  However, it is incrediably slow.  Slower than the old Dell tape drive I had.  I cannot get it to backup local files above 130.00 MB/min.  When using the Windows driver I was getting speeds at 1,743 MB/min.  

Part of me thinks the real issue is compression isn't actually working.  Though the compression setting in the jobs are available to set, I get hardly any compression whether I choose hardware or software.  It looks to be only 1.02:1 which is ridiculous to me.    I really want the speed back that I know the device is capable of...is there anything I can do to speed it up?  I have already tried unchecking Read single block (in the drive's configuration) and turning off Anti-virus.  

I am using a Windows Server 2000 on a NTFS format with Vertias Backup Exec 9.1 with what I have found to be the latest patch (unless I missed one).  
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shonadle
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shonadle
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1 Solution
 
rindiCommented:
First, compression depends completly on the data you are backing up. data like mp3, mpeg, jpeg, avi, zip etc is already as compressed as can be and can't be compressed further without data loss. Also most program files are already quite well compressed. Word and excel, txt docs etc can often be compressed a lot, but these are often only a small part of a backup and don't make a big impact.

If your tape drive has hardware compression on, then don't also use software compression, and if you are using software compression (which I prefer, as it is more likely to be readable on other tape drives), then make sure hardware compression is off.

What is also very important, is to have the tape drive connected to a dedicated SCSI adapter, and not the same one the HD's are already running off, in particular, never use a raid controller for the tape.

What is the hardware like where your backup is running on? If that is running hard, then the backup will also be slow, and are you backing up just this server, or also other networked PC's/Server's?
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shonadleAuthor Commented:
I forgot to add, that yes my tape drive is connected to a dedicated SCSI adapter.  The raid controller is completely seperate.

The files are a mixture, again, these are the same files I was backing up with the old Dell tape drive which backed up much faster using a LTO 1 tape drive.  Most of them are Word and Excel documents probably with a few PDF, Zip,  and image files scattered in between.  Maybe it is compressing correctly and that is just a red herring, my main issue is how slow the new fast autoload tape drive is backing up now.  While testing I have tried ALL types of compression methods to see if I get any kind of difference in speed, but nothing changed.  By default I usually have it set to Hardware compression.  

The hardware that it is running on is Dell Poweredge 2650 running dual P4 3.0, 2 GB memory, 139 GB RAID 5. I do backup 2 other servers through the course of the week but right now I'm concentrating on getting the local backup to run correctly as networked backups always run slower.  

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shonadleAuthor Commented:
Sorry for getting back so late, just got back from vacation.  I stilll would love a resolution to this issue as our backup is still slow.  I still think the problem is on Veritas end as using the Windows driver the backup was lightening fast.
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rindiCommented:
Did you install all the veritas servicepacks and updates?
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shonadleAuthor Commented:
Yes, according to the downloads section of the site, I have all updates and service packs for my version of Veritas 9.1
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rindiCommented:
I'll post this Q to another thread which should get more experts on the scene.
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Duncan MeyersCommented:
Try reinstalling the Windows drivers - they *will* work with BE9.1 even if the Veritas drivers are the Veritas preferred option. If the backup runs well, then you can be 100% certian that it's a driver issue, and we can take it from there.
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shonadleAuthor Commented:
Thanks, and they do technically "work" with Veritas.  However, the issue with the WIndows drivers is they do not see the device as an Autoloader.  Only a single tape drive.  
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Duncan MeyersCommented:
Nevertheless, does reloading the Windows drivers fix the performance issue? If it does, then your next step is to log a support call with Symantec so that they can fix their driver.
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shonadleAuthor Commented:
Well, I was trying to keep from using support as our warrenty is out and support is no longer free.  But if no one else has any other ideas than I will try that as soon as I get a chance.
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Duncan MeyersCommented:
Looks like Symantec no longer offers e-mail support for 9.1 - although you could try posting in their support forum: http://forums.veritas.com/discussions/forum.jspa?forumID=101

My guess is that their driver is buggy - hence my suggestion. We need to confirm that you do indeed have a driver issue.
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shonadleAuthor Commented:
Thank you.  I posted a question this morning.  Maybe this can be settled easily.

If no one has any other ideas I will accept your answer later today.
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