Comments on: Does Symantec backup exec11d supports IBM LTO-3 ? http://itknowledgeexchange.techtarget.com/itanswers/does-symantec-backup-exec11d-supports-ibm-lto-3/ Tue, 21 May 2013 14:21:37 +0000 hourly 1 By: pressler2904 http://itknowledgeexchange.techtarget.com/itanswers/does-symantec-backup-exec11d-supports-ibm-lto-3/#comment-55699 pressler2904 Thu, 14 Aug 2008 17:24:27 +0000 #comment-55699 Further to what CyberStorage says regarding the HBA (Host Bus Adapter): In addition to utilizing a dedicated SCSI card (not a RAID card), make sure the individual channels on the card are set to the proper speed… If your tape device is, for example rated for 80MB/s burst throughput, you want to set the appropriate HBA SCSI channel accordingly – if the card is rated at 320MB/s or 160MB/s throughput (as most server grade cards are these days), you will be flooding the channel if the card is allowed to communicate at the default (ie: fastest) rate.
When booting your system, you will see the HBA BIOS dialog appear, and it will state something along the lines of “Press Ctrl + A to enter SCSI Utilities” (for Adaptec cards…). When in the utility, there is a portion where you can see a listing of each channel (usually 8 or 16) and what the maximum speed is. Set the speed of the appropriate SCSI ID (the ID assigned to the tape drive) to the next SLOWEST or the SAME speed as your device. For example, if your tape drive is rated to 50MB/s burst throughput, don’t set the card at 80MB/s: set it at 40MB/s. Many (ie: most) SCSI backup device communication issues are resolved by this method.

NOTE: If using a disk based tape emulation library, check with the manufacturer if the disk subsystem OR the emulated tape subsystem throughput figure applies…

]]> By: cyberstorage http://itknowledgeexchange.techtarget.com/itanswers/does-symantec-backup-exec11d-supports-ibm-lto-3/#comment-55681 cyberstorage Thu, 14 Aug 2008 14:28:27 +0000 #comment-55681 Your drive should be supported. I’ve done a lot of troubleshooting with Backup Exec. Start with the basics first:

1. Download the latest patches for Backup Exec.
2. Download the latest device drivers for Backup Exec.
3. Assuming it’s a SCSI tape drive, make sure you use a dedicated SCSI card (Not a RAID controller) or at least don’t have any hard drives on the same SCSI bus with the tape drive.
4. Disable the Removable Storage Service in Windows.

If that doesn’t work out, check out Symantec’s checklist here: http://seer.entsupport.symantec.com/docs/255501.htm

Hope this helps!

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