Slow Restore

[mrn]

Another Problem.

I'm backing up about 2.5Gb which take 5 minutes. However it takes 1Hr 10 minutes to restore.

Server IBM 6H1 DTO 200Gb drive
to local disk.

Any Ideas where to start looking --
| Mike Nixon
| Unix Admin
|

http://www.parcandgo.co.uk

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[dblair]

Is the backup done out-of-hours and you are restoring whilst the system is in use ?

 

[mrn]

System not live, so only me on, nothing else running --
| Mike Nixon
| Unix Admin
|

http://www.parcandgo.co.uk

----------------------------

 

[DSMARWAY]

hi,

what is your block size set to ?

normally you would set it to 0 and use the program like backup to specify the block size

check

1. block size of tape drive , set it to 0
2. the program you are using to backup , specify block size
3. when restoring specify the block size used when backed up

hth

 

[franksoprano]

What kind of backup are you doing? Are you restoring the data to the same system, or a different system? If its a different system are the disks the same speed? Fiber/Scsi attached?

I would definately expirement with the block size settings..


Good Luck!

Frank-

 

[mrn]

Thanks for all your help guys. I managed to figure this out it was a DLT drive not a DLO, the block size of the device must be set to 232628 and the output/input block size should be 512, restores in minutes now.

--
| Mike Nixon
| Unix Admin
|

http://www.parcandgo.co.uk

----------------------------