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max. 400GB on Tape
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Post max. 400GB on Tape 
Hi everybody.

We have our own physical backup server running Red Hat Linux 6 with Bacula 5.0.3 to a Tandberg T24 Tape Library
with one LTO-5 Tape drive with an uncompressed capacity of 1.5 TB.
Only Bacula is writing to this no. No other application uses it.
When about 400GB capacity is reached, then tape will be marked full and Bacula
switches to the next tape in the pool.
Where can I configure to use the whole 1.5TB capacity.

br Robert

Post max. 400GB on Tape 
We have our own physical backup server running Red Hat Linux 6 with Bacula
5.0.3 to a  Tandberg T24 Tape Library

with one LTO-5 Tape drive with an uncompressed capacity of 1.5 TB.

Only Bacula is writing to this no. No other application uses it.

When about 400GB capacity is reached, then tape will be marked full and
Bacula

switches to the next tape in the pool.

Where can I configure to use the whole 1.5TB capacity.


There is no place to configure to use the full capacity since tapes
with hw compression have no fixed full capacity. You could fit 800GB
on one LTO5 tape and 8TB on a second depending on how your data
compresses. Just make sure someone did not configure to stop after
400GB by putting limits on the volume size in the Pool directive. Most
likely your problem is you are using an LTO3 tape, possibly somehow
have the tape partitioned or a tape error has occurred. With tapes
bacula writes to the tape until it hits its first error. When it hits
that error it marks the tape full. Check your dmesg for scsi errors.

John

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Post max. 400GB on Tape 
Dear John.

On my tape(s) is the following description:
Tandberg Data LTO ULTRIUM LTO 5 Cartridge 1.5 TB, 3.0 TB UNCOMPRESSED.
Thus I think that is an LTO-5 Tape.

On the other hand there exists the same types of tapes from Tandberg as well
in another pool and this backups run very well.
So I think it could not be a problem of the scsi-bus, isn't it?

br Robert



Mit freundlichen Grüßen / Kind regards

Robert Kromoser
SAP Technology Consultant / System Administrator


KINAMU Business Solutions AG
Concorde Business Park 2 / F12
2320 Schwechat, Austria
Tel:  +43 1 30620 - 124
Fax: +43 1 30620 - 9000
robert.kromoser < at > kinamu.com
http://www.kinamu.com
 
KINAMU Deutschland GmbH
Crusiusstrasse 1
80538 München, Deutschland
Tel:  +49 89 / 381 698 82
Fax: +49 89 / 613 944 50


-----Original Message-----
From: John Drescher [mailto:drescherjm < at > gmail.com]
Sent: Mittwoch, 16. Mai 2012 14:14
To: Robert Kromoser
Cc: bacula-users < at > lists.sourceforge.net
Subject: Re: [Bacula-users] max. 400GB on Tape

We have our own physical backup server running Red Hat Linux 6 with
Bacula
5.0.3 to a  Tandberg T24 Tape Library

with one LTO-5 Tape drive with an uncompressed capacity of 1.5 TB.

Only Bacula is writing to this no. No other application uses it.

When about 400GB capacity is reached, then tape will be marked full
and Bacula

switches to the next tape in the pool.

Where can I configure to use the whole 1.5TB capacity.


There is no place to configure to use the full capacity since tapes with hw compression have no fixed full capacity. You could fit 800GB on one LTO5 tape and 8TB on a second depending on how your data compresses. Just make sure someone did not configure to stop after 400GB by putting limits on the volume size in the Pool directive. Most likely your problem is you are using an LTO3 tape, possibly somehow have the tape partitioned or a tape error has occurred. With tapes bacula writes to the tape until it hits its first error. When it hits that error it marks the tape full. Check your dmesg for scsi errors.

John

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Bacula-users mailing list
Bacula-users < at > lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bacula-users

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