Peter Zenge:
Remember also that if you are trying to minimize tape/disk/other backup
media space used, and using encryption, you will need to use software
compression. The FD compresses before encrypting; once encrypted, as
noted above, the data is no longer compressible...
Ack, that was
On 08/14/10 09:34, Dietz Pröpper wrote:
Peter Zenge:
Remember also that if you are trying to minimize tape/disk/other backup
media space used, and using encryption, you will need to use software
compression. The FD compresses before encrypting; once encrypted, as
noted above, the data is no
On Aug 13, 2010, at 2:23 PM, Dietz Pröpper wrote:
You:
On Aug 13, 2010, at 4:10 AM, Dietz Pröpper wrote:
IMHO there are two problems with hardware compression:
1. Data mix: The compression algorithms tend to work quite well on
compressable stuff, but can't cope very well with precompressed
Phil Stracchino:
On 08/14/10 09:34, Dietz Pröpper wrote:
Peter Zenge:
Remember also that if you are trying to minimize tape/disk/other
backup media space used, and using encryption, you will need to use
software compression. The FD compresses before encrypting; once
encrypted, as noted
You:
On Aug 13, 2010, at 2:23 PM, Dietz Pröpper wrote:
You:
On Aug 13, 2010, at 4:10 AM, Dietz Pröpper wrote:
IMHO there are two problems with hardware compression:
1. Data mix: The compression algorithms tend to work quite well on
compressable stuff, but can't cope very well with
Rory Campbell-Lange:
On 12/08/10, Mike Hanby (mha...@uab.edu) wrote:
I'm curious whether others with the PV-124T with LTO4 are using
hardware or software compression.
I am testing a new Bacula deployment with one of these autoloaders /
drives and haven't found a good suggestion as to
John Drescher:
On Thu, Aug 12, 2010 at 6:59 PM, Mike Hanby mha...@uab.edu wrote:
Howdy,
I'm curious whether others with the PV-124T with LTO4 are using
hardware or software compression.
I am testing a new Bacula deployment with one of these autoloaders /
drives and haven't found a
On Fri, Aug 13, 2010 at 4:12 AM, Dietz Pröpper di...@rotfl.franken.de wrote:
John Drescher:
On Thu, Aug 12, 2010 at 6:59 PM, Mike Hanby mha...@uab.edu wrote:
Howdy,
I'm curious whether others with the PV-124T with LTO4 are using
hardware or software compression.
I am testing a new
John Drescher:
On Fri, Aug 13, 2010 at 4:12 AM, Dietz Pröpper di...@rotfl.franken.de
wrote:
John Drescher:
On Thu, Aug 12, 2010 at 6:59 PM, Mike Hanby mha...@uab.edu wrote:
Howdy,
I'm curious whether others with the PV-124T with LTO4 are using
hardware or software compression.
On Aug 13, 2010, at 4:10 AM, Dietz Pröpper wrote:
IMHO there are two problems with hardware compression:
1. Data mix: The compression algorithms tend to work quite well on
compressable stuff, but can't cope very well with precompressed stuff, i.e.
encrypted data or media files. On an old
On 08/13/10 04:10, Dietz Pröpper wrote:
IMHO there are two problems with hardware compression:
1. Data mix: The compression algorithms tend to work quite well on
compressable stuff, but can't cope very well with precompressed stuff, i.e.
encrypted data or media files. On an old DLT drive
Subject: Re: [Bacula-users] Dell PV-124T with Ultrium TD4, Hardware or Software
compression?
On 08/13/10 04:10, Dietz Pröpper wrote:
IMHO there are two problems with hardware compression:
1. Data mix: The compression algorithms tend to work quite well on
compressable stuff, but can't cope very
You:
On Aug 13, 2010, at 4:10 AM, Dietz Pröpper wrote:
IMHO there are two problems with hardware compression:
1. Data mix: The compression algorithms tend to work quite well on
compressable stuff, but can't cope very well with precompressed stuff,
i.e. encrypted data or media files. On an
Phil Stracchino:
Neither of these issues is applicable to LTO. The compression algorithm
(which is a pretty good one) is defined in the LTO specification, and
the drive compresses data block-by-block, doing a trial compression of
each data block and writing whichever is the smaller of the
From: Phil Stracchino [mailto:ala...@metrocast.net]
Sent: Friday, August 13, 2010 7:51 AM
To: bacula-users@lists.sourceforge.net
Subject: Re: [Bacula-users] Dell PV-124T with Ultrium TD4, Hardware or
Software compression?
On 08/13/10 04:10, Dietz Pröpper wrote:
IMHO there are two
Remember also that if you are trying to minimize tape/disk/other backup media
space used, and using encryption, you will need to use software compression.
The FD compresses before encrypting; once encrypted, as noted above, the data
is no longer compressible...
LTO4 and above have builtin
Howdy,
I'm curious whether others with the PV-124T with LTO4 are using hardware or
software compression.
I am testing a new Bacula deployment with one of these autoloaders / drives and
haven't found a good suggestion as to which type of compression to go with.
Thanks,
Mike
On 12/08/10, Mike Hanby (mha...@uab.edu) wrote:
I'm curious whether others with the PV-124T with LTO4 are using
hardware or software compression.
I am testing a new Bacula deployment with one of these autoloaders /
drives and haven't found a good suggestion as to which type of
compression
On Thu, Aug 12, 2010 at 6:59 PM, Mike Hanby mha...@uab.edu wrote:
Howdy,
I'm curious whether others with the PV-124T with LTO4 are using hardware or
software compression.
I am testing a new Bacula deployment with one of these autoloaders / drives
and haven't found a good suggestion as to
On Thu, 2010-08-12 at 17:59 -0500, Mike Hanby wrote:
Howdy,
I'm curious whether others with the PV-124T with LTO4 are using hardware or
software compression.
I am testing a new Bacula deployment with one of these autoloaders / drives
and haven't found a good suggestion as to which type
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