Slow Throughput LTO-Ultrium 2 2

[nerdboy123456]

Hello,

I am only getting 12gb/hr throughput on my new Quantum LTO-Ultrium 2 drive. This drive should theoretically get

96GB/hr, so it is way under. I am expecting somewhere around 80GB/hr.

Here is my setup:

Quantum LTO-Ultrium 2 Half-Height drive.
Adaptec 29160 with the latest driver and Firmware.
Veritas 9.1 4691. I have attempted to apply SP4 and SP4a for Veritas, but I am not sure that it was successfully

installed. It doesn't show up when you got to About Backup Exec...
OS is Windows XP SP2

I haven't changed anything for the drive properties in terms of Block Size or cache. The block size is currently

64k.

The throughput is roughly the same for local files as it is when backing files across the network.

The drive is terminated.

Any ideas?

 

[Zelandakh]

Dumb one but I've seen it before - remove the terminator.

Also check the SCSI card setup.

What hard drive are you using? If you are on XP, is it a standard IDE drive?

 

[nerdboy123456]

The backup is running right now, but I will check the SCSI card setup. What, in particular, should I look for?

 

[Zelandakh]

Is it set for 40mb/sec or something silly. You've got a 29160 on a standard PCI bus or PCI-X? What backplane? This could be a disk or backplane bottleneck.

 

[nerdboy123456]

It is a standard PCI Bus. This is running on a Generic "MWAVE" Workstation with an ASUS P4P800-VM motherboard.

 

[Zelandakh]

Standard PCI architecture and an IDE-100 drive will give you up to 45GB/hr maximum. With Windows running and the usual background services, you can bring that down a lot.

To increase the throughput you need to move the data to its own disk with a faster IO and a better machine.

 

[nerdboy123456]

Thanks for your replies, Zelandakh. I checked the SCSI BIOS settings, and everything is set for 160MB/Sec. The Hard Drive is IDE-100. Do you have any other suggestions besides upgrading to a better machine? Re$ource$ are a bit limited. I may be able to move the backups to a server machine with SCSI drives, but I was hoping to keep the backups running on a separate machine. Thanks again.

 

[LawnBoy]

Just to continue what Zelandakh said:

One of my media servers is a dell gx270 plain-jane pc,IDE 100, 29160 card on Standard PCI, but I'm running Netware 6.5 on it.

My jobs are averaging 716Mb/min or almost 43Gb/hr. However, I have one volume of 14Gb that runs at 1280Mb/Min (76.8Gb/hr) and another volume of 33Gb that runs at 1029Mb/min (61.7Gb/hr). All data is remote.

No real point here, just some real-life data.

 

[comtec17]

Gb=Gigabit not Gigabyte so you are looking at Gigabit per hour, not Gigabyte per hour, big difference.