Forum Discussion

GTA_doum's avatar
GTA_doum
Level 3
12 years ago

BackupExec 2010R3 slow

Hello, I have a 2008 server with BackupExec 2010R3 running under VMWare ESXi 5.  The tape unit is a Certance LTO-2 autoloader. The speed was fine, ~800mb/min, until I changed the C: drive to a SC...
2010
Backup and Recovery
Backup Exec
Backup Exec Appliances
  • GTA_doum's avatar
    GTA_doum
    12 years ago

    Finally I restarted the unit, and then the VMWare host (the physical computer).  The unit drive came back to blazing speed!

    Puzzling, but glad an easy solution solved it smiley

pkh's avatar
pkh
Moderator
12 years ago

Since you have said that when you backup to a B2D folder, the speed is good, then the problem lies with the tape drive and not your VM setup.

Duplicate your disk backup to your tape drive and see what speed do you get.  Also backup some normal files, not from a VM, to the tape drive and see the speed

Assuming that it is your tape drive that is slow.  Here are a couple things that you should do/try

1) Make sure that your library appears in the Windows device manager as an Unknown Medium Changer with a Microsoft driver and that you are using Symantec driver for your tape drive.

2) Tune your tape drive.  I know you said that you have done so, but read my article below and see if it gives you any new insight.

https://www-secure.symantec.com/connect/articles/tuning-my-lto4-tape-drive

It is written for LTO4, but the principle should still apply to LTO2

3) Run the manufacturer's diagnostic utility against the tape library.  Make sure that you select the write test and that you have stopped all the BE services beforehand.

4) re-instal the tape library using the procedure below

================

 

1) Delete the library from BE
 
2) Stop the media server and the library
 
2a) remove and reseat the cable connecting the tape library to the media server.  You might want to consider swapping to a new cable.
 
3) Start the tape library
 
4) Start the media server
 
5) Ensure that the library and tape drive is recognised and functioning correctly in the Windows Device Manager. The library should appear as an Unknown Medium Changer with a Microsoft driver and the tape drive should have a Symantec driver.
 
 
6) In BE, install the library if necessary.  Go to Tools --> Wizards ---> Device Configuration Wizard to do so.
 
6) Try again.

================