topic Re: ADIC: backup in Operating System - HP-UX

ADIC: backup

Frédéric DAMEZ — Thu, 19 Jun 2008 08:17:13 GMT

We have our HP machine SAN attached, and all
ADIC tape drives is known via the fabric.

The ADIC is lunched by TINA .

We are not able to do more than 60 Gb/h .

Does anyone have any idea?

Thanks

Re: ADIC: backup

Fabio Ettore — Thu, 19 Jun 2008 08:25:55 GMT

Hi,

what tool are you using to take backups?

Best regards,
Fabio

Re: ADIC: backup

Bill Hassell — Thu, 19 Jun 2008 23:44:58 GMT

You did not supply any information about the model of the tape drive, and the computer model. Modern tape drives are faster than disks (such as the Ultrium 960 (LTO3) at minimum of 200 GB/hr, 400 GB/hr if the data is compressible) so you need special software to keep the tape drive running at full speed. Most disks can't run at this speed, especially if there are other activities on the system. Your computer may be too slow to keep up with the tape drive.

In either case, when the tape runs out of data, it must stop, backup and start running when more data arrives. Modern commercial backup software will start multiple streams of data into a shared memory pool to keep the drive busy. If TiNA has this ability, be sure to configure as many parallel reader processes as TiNA will allow.

What is the model of your computer and the model of your tape drive?

Re: ADIC: backup

Frédéric DAMEZ — Fri, 20 Jun 2008 11:54:22 GMT

Re: ADIC: backup

Frédéric DAMEZ — Fri, 20 Jun 2008 11:56:44 GMT

Hi,

My server is HP
Model : 9000/800/rp3440
OS : HP-UX
Version : B.11.23
KERNEL_Bits : 64
Memory : 16382
Processors : 2 (1000) Mhz

HPUX : 11.23: 9000/800/rp3440
Swap: /dev/vg00/lvol2 == 8 Go

The backup utility is Tina 4.1

The tape drive is Adic i2000 which use
physical LTO 3
Virtual LTO 2 (Clariion disques )

Re: ADIC: backup

Frédéric DAMEZ — Fri, 20 Jun 2008 11:57:22 GMT