Mailinglist Archive: opensuse (3175 mails)
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Re: [opensuse] Tape backup? - slightly OT
- From: Adam Tauno Williams <adamtaunowilliams@xxxxxxxxx>
- Date: Mon, 02 Apr 2007 13:51:40 -0400
- Message-id: <1175536300.14485.6.camel@xxxxxxxxxxxxxxxxxxx>
> > a little off-topic but I'm looking into replacing our old DDS4
> > tape drive which is now too small.
> > Our choice now looks like LTO, AIT or DLT as our total backup size
> > is now 80Gb. Has anyone got any good/bad experiences with any of
> > these technologies? I'm assuming that all will be recognised by
> > SuSE on our servier which has both SATA and SCSI. What's the
> > cheapest to buy and run?
> We currently use LTO. It works ok - for a tape. As all tapes it is
> slow as hell
> for recovery case, a LTO media is mechanically robust but can't be
> used that often (we change media after 15 backup cycles and already
> had rejected tapes).
We have three LTO drives; life cycle of a tape is MUCH MUCH longer than
that.
> Next time we need to change backup system we will go to USB/eSATA
> disks - one disk for each tape media we currently have in use:
> Pro:
> - you don't need an expensive tape-drive
> - you can already have 1TB per media
You can get 1TB drives?
> - you can reuse such a disk much more often then 15 times
Not likely if you are trundling them back and forth between an offsite
backup location. The durability of a caddied drive isn't event remotely
close to that of a magnetic tape. Not even close.
> Contra:
> - a single media is a bit more expensive
> - a disk is not as robust as a tape media
Not even close.
> - a disk _may_ not be usable as long as a tape media
It won't be.
> - at least 3.5" disks are a little bit bigger then LTO tape media
> This is not a solution for a 1000 people company, but for a server
> with up to a
> terrabyte online storage it is a robust, easy to handle, relatively
> cheap and
Not robust. Not easy to handle (*FRAGILE*) and certainly NOT
electromagnetically robust; one good jolt of static electricity and
your backup is fried. Magnetic tape is amazingly resilient.
> reliable solution. It may not be a solution if you have to archive
> financial
> data for your local tax institute - IANAL. But if you "only" have to
> deal with important data it is better then most solutions I know about.
--
--
Adam Tauno Williams
Network & Systems Administrator
Consultant - http://www.whitemiceconsulting.com
Developer - http://www.opengroupware.org
--
To unsubscribe, e-mail: opensuse+unsubscribe@xxxxxxxxxxxx
For additional commands, e-mail: opensuse+help@xxxxxxxxxxxx
> > tape drive which is now too small.
> > Our choice now looks like LTO, AIT or DLT as our total backup size
> > is now 80Gb. Has anyone got any good/bad experiences with any of
> > these technologies? I'm assuming that all will be recognised by
> > SuSE on our servier which has both SATA and SCSI. What's the
> > cheapest to buy and run?
> We currently use LTO. It works ok - for a tape. As all tapes it is
> slow as hell
> for recovery case, a LTO media is mechanically robust but can't be
> used that often (we change media after 15 backup cycles and already
> had rejected tapes).
We have three LTO drives; life cycle of a tape is MUCH MUCH longer than
that.
> Next time we need to change backup system we will go to USB/eSATA
> disks - one disk for each tape media we currently have in use:
> Pro:
> - you don't need an expensive tape-drive
> - you can already have 1TB per media
You can get 1TB drives?
> - you can reuse such a disk much more often then 15 times
Not likely if you are trundling them back and forth between an offsite
backup location. The durability of a caddied drive isn't event remotely
close to that of a magnetic tape. Not even close.
> Contra:
> - a single media is a bit more expensive
> - a disk is not as robust as a tape media
Not even close.
> - a disk _may_ not be usable as long as a tape media
It won't be.
> - at least 3.5" disks are a little bit bigger then LTO tape media
> This is not a solution for a 1000 people company, but for a server
> with up to a
> terrabyte online storage it is a robust, easy to handle, relatively
> cheap and
Not robust. Not easy to handle (*FRAGILE*) and certainly NOT
electromagnetically robust; one good jolt of static electricity and
your backup is fried. Magnetic tape is amazingly resilient.
> reliable solution. It may not be a solution if you have to archive
> financial
> data for your local tax institute - IANAL. But if you "only" have to
> deal with important data it is better then most solutions I know about.
--
--
Adam Tauno Williams
Network & Systems Administrator
Consultant - http://www.whitemiceconsulting.com
Developer - http://www.opengroupware.org
--
To unsubscribe, e-mail: opensuse+unsubscribe@xxxxxxxxxxxx
For additional commands, e-mail: opensuse+help@xxxxxxxxxxxx
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