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Backup issue please help...

Backup issue please help...

Hi all!
I have a SDLT ultrium 320 tape drive attached to HP proliant ML570 server running windows server 2003 I have been taking the backup without any problem using windwows ntbackup with 320GB tape.Now the size of my data is 195GB any time I issue the backup after some time it will give me the following error " Backup Status
Operation: Backup
Active backup destination: DLT
Media name: "Media created 9/3/2007 at 11:21 AM"

Volume shadow copy creation: Attempt 1.
Backup (via shadow copy) of "C: "
Backup set #1 on media #1
Backup description: "Set created 9/3/2007 at 11:23 AM"
Media name: "Media created 9/3/2007 at 11:21 AM"

Backup Type: Normal

Backup started on 9/5/2007 at 4:00 AM.
The requested media failed to mount. The operation was aborted.
The operation was ended.
Backup completed on 9/5/2007 at 6:44 AM.
Directories: 328
Files: 102646
Bytes: 166,231,674,777
Time: 2 hours, 43 minutes, and 7 seconds

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

The operation did not successfully complete."
after some troubleshooting the error message has changed to this " The current media is full and there is not free media. Please add media or click cancel to stop the backup".
Any help???
4 REPLIES
Víctor Cespón
Honored Contributor

Re: Backup issue please help...

The SDLT tapes you're using have a capacity of 160 GB, and you're writing almost 160 GB to them.
Check if you have hardware compression enabled on the backup application. You can also run a compression test with Library and Tape Tools.

Re: Backup issue please help...

NB: the DLT tape is 320GB of capacity, not 160GB.
Víctor Cespón
Honored Contributor

Re: Backup issue please help...

No.
1st in your message you write "SDLT ultrium 320", that does not exist, either it's SDLT or it's Ultrium.
Later you say: Active backup destination: DLT
So it's a SDLT 160/320. That means 160 GB real capacity, 320 GB assuming a 2:1 compression, which can be possible or not depending on the data being copied and on whether you have compression enabled on your software.
If you can write 160 GB to a 160 GB tape, then there's nothing wrong, you could possibly write more if you enable compression.

Re: Backup issue please help...

You are may be right what is the tangible solution of getting rid of this issue because I must solve it as soon as possible for one week I have not been able to take my backup successfully.