Re: Backup Failure The requested media failed to mount

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Not a black hole - the tape drive manufacturers make no claim that the
device will hold more than it's native capacity. They have no way of knowing
how compressible the data is, and it so happens that the bulk of what you're
backing up are binaries that aren't very compressible.

Like I mentioned, about 23gb is about the best I've seen on dds4.
Compression is used, if the hardware supports it - SBSbackup has nothing to
do with that - it's a hardware function.

You *can* get an estimate of backup size - sbsbackup wizard does that for
you if you click the 'calculate' button (AFAIK).

--
Les Connor [SBS Community Member - SBS MVP]
-----------------------------------------------------------
SBS Rocks !
----------------------
"Tell me and I'll forget. Show me and I'll remember. Involve me and I'll
understand." - Confucius


"Terry M" <terrym@xxxxxxxxxxxxxxxxxx> wrote in message
news:OETvc5CKGHA.668@xxxxxxxxxxxxxxxxxxxxxxx
Les/Tammi

Everything else is so easy to monitor on the SBS box it's odd that the
tape drive is such a black hole for me.

I am not sure what the purpose of the 20/40 format is if it does not
compress automatically or have an option to set. I assume I would need to
use an aftermarket backup to control this or get an estimate of backup
size before it runs.

Thanks

"Les Connor [SBS Community Member - SBS MVP]" <les.connor@xxxxxxxxxxxx>
wrote in message news:%23a6$LnCKGHA.3936@xxxxxxxxxxxxxxxxxxxxxxx
Hi Terry,

Add up the size of the backup (all the numbers in the backup log) - if
it's over about 23 GB, your tape is likely full.

--
Les Connor [SBS Community Member - SBS MVP]
-----------------------------------------------------------
SBS Rocks !
----------------------
"Tell me and I'll forget. Show me and I'll remember. Involve me and I'll
understand." - Confucius


"Terry M" <terrym@xxxxxxxxxxxxxxxxxx> wrote in message
news:%23HiRn5BKGHA.2040@xxxxxxxxxxxxxxxxxxxxxxx
Hello

We are using SBS 2003 Prem on a Dell PE260 that has a DDS20/40 tape
backup.
On some of my backups I am seeing a failed backup with the message "The
requested media failed to mount. The operation was aborted."

This failure is not at the start it is generally well into the backup.
From what I can figure looking at the SBS trouble shooting guide this is
could be due to the tape being full.

Trouble is I do not know how to tell if this is in fact the case. Can
someone tell me how to tell if my tape is full? I am a part time IT guy
as part of my other duties at my company and I can't seem to figure out
how to tell. If my tape is 20/40 how do I know if the data is being
compressed and using the 40..

Thanks

Terry Mc







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