mb21784
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What is that fastsest I should be able to transfer data from a DL380 to an Ultrium 960?
Server: HP DL380, 2) 3.8 processors, 2GB RAM, single RAID 5 array w/5 disks on a 6i array controller
Tape Drive: Ultirum 960 connected to a 64-bit/133-MHz pci-x dual channel Ultra320 HBA
Application: Symantec Back-Up Exec 10d
The drive claims hugh transfer rates (576GB/hr) or 160MB/s compressed, 80MB/s native. The controller claims up to 320MB/s.
When we run backups, we are getting something in the neighborhood of 14MB/s. At worst I figured we would see 80MB/s.
We have replaced controllers, drivers, and firmware. Any ideas about what may be behind the slow speeds? Is it reasonable to expect the higher speeds given the configuration listed above?
Thanks,
Mike
Tape Drive: Ultirum 960 connected to a 64-bit/133-MHz pci-x dual channel Ultra320 HBA
Application: Symantec Back-Up Exec 10d
The drive claims hugh transfer rates (576GB/hr) or 160MB/s compressed, 80MB/s native. The controller claims up to 320MB/s.
When we run backups, we are getting something in the neighborhood of 14MB/s. At worst I figured we would see 80MB/s.
We have replaced controllers, drivers, and firmware. Any ideas about what may be behind the slow speeds? Is it reasonable to expect the higher speeds given the configuration listed above?
Thanks,
Mike
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ASKER
We are already on the controller card recommended by HP and indicated in the link provided by ded9 above. It is interesting that that company noticed improved performance once they made the change.
Chances are the controller is at its default setting but it is worth verifying. The default is to let the controller auto negotiate the transfer speed and it is possible it could have been set to a low setting. One thing though last time I tried it the HP version of the driver did not let you go into the adapter configuration, and it was necessary to install the Adaptec version of the driver to get into the configuration program.
What type of data is being backed up?
What type of data is being backed up?
mb21784 Any updates did the link helped you
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Ded9
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Ded9
ASKER
ded9... Unfortunately, no. We are already using the controller HP recommended in the artcle that ended up helping that user. We ahve also had the controller replaced. Twice.
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1024517&admit=-682735245+1152868298056+28353475
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