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"Backup my harddrive? How do I put it into reverse?"
So spake the proverbial n00b. But seriously, in a business environment,
backing up critical data is pretty important.
What do you use to back up data? I'm not talking about permanent
archival, I'm talking about rolling backups so that if a small meteorite
hits your server room, you don't loose all the data you're working on.
I just managed to exceed the capacity of our current backup system. I
mean, I can temporarily work round it, but using a system that can
backup less than 1/3 of the data your server is capable of storing isn't
very smart. So we're going to have to invest in some better hardware.
What would you buy?
[I imagine this one is going to be dictated to me by HQ, but I'm curios...]
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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> What do you use to back up data? I'm not talking about permanent archival,
> I'm talking about rolling backups so that if a small meteorite hits your
> server room, you don't loose all the data you're working on.
Our backups are usually used when someone accidentally deletes a file (or a
lot of files!) from the server...
AFAIK over at IT they use a tape backup system - it runs every night on a
rolling basis, I think at the moment you can get a backup from the last 7 or
10 days, after that they start overwriting. On top of that weekly ones are
kept and stored separately (so I assume that allows you to get back 7 or 10
weeks). It's pretty complex and I don't know much about the details - but I
do know that a while back they had to make some changes because there wasn't
enough time overnight to do the backup :-)
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scott wrote:
>> What do you use to back up data? I'm not talking about permanent
>> archival, I'm talking about rolling backups so that if a small
>> meteorite hits your server room, you don't loose all the data you're
>> working on.
>
> Our backups are usually used when someone accidentally deletes a file
> (or a lot of files!) from the server...
Well, yeah, that's what you end up actually *using* the system for. ;-)
[Or maybe just because Word crashed and ate your document, and you don't
want to start from scratch again.]
> AFAIK over at IT they use a tape backup system - it runs every night on
> a rolling basis, I think at the moment you can get a backup from the
> last 7 or 10 days, after that they start overwriting. On top of that
> weekly ones are kept and stored separately (so I assume that allows you
> to get back 7 or 10 weeks). It's pretty complex and I don't know much
> about the details
Nah. Sounds like exactly what we have here.
> but I do know that a while back they had to make
> some changes because there wasn't enough time overnight to do the backup
> :-)
Well, that's why we only back up "changed" files nightly, and do a full
backup at the weekends only. It used to be touch and go whether it would
complete by Monday - but since I installed higher capacity drives, it
seems to back up very much faster.
No, the limitation I'm running into now is space, not time.
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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> No, the limitation I'm running into now is space, not time.
Buy some bigger tapes then, or more of the current ones?
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scott wrote:
>> No, the limitation I'm running into now is space, not time.
>
> Buy some bigger tapes then, or more of the current ones?
DDS only goes up to a maximum of 80 GB. My server holds 103 GB. Time to
move to a different tape technology - but which one? There are many to
choose from.
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Invisible wrote:
> [I imagine this one is going to be dictated to me by HQ, but I'm curios...]
Yah, I was right. They're sending us an LTO-1 robotic library.
[Great. Now I have to Google "serial-attached SCSI"...]
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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And lo on Tue, 18 Mar 2008 15:10:27 -0000, Invisible <voi### [at] dev null> did
spake, saying:
> Invisible wrote:
>
>> [I imagine this one is going to be dictated to me by HQ, but I'm
>> curios...]
>
> Yah, I was right. They're sending us an LTO-1 robotic library.
That's a shame I thought they were going to suggest using 5 (or 7) hot
swap drives and mirroring them each day before archiving them off to tape.
It all depends on what level of back-up you require. Heh my favourite is a
company that used the grandfather/father/son system of backups, but reused
the tapes. So Day 1: GF, Day 2: F, Day 3: S, Day 4: GF etc. I'm sure you
can all see the problem.
--
Phil Cook
--
I once tried to be apathetic, but I just couldn't be bothered
http://flipc.blogspot.com
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Invisible wrote:
>
> What do you use to back up data? I'm not talking about permanent
> archival, I'm talking about rolling backups so that if a small meteorite
> hits your server room, you don't loose all the data you're working on.
At work? LTO-II with robotic library capable of 14 tapes.
Or at home? I just acquired a used Dell Powervault 120T DLT-robot.
http://support.euro.dell.com/support/edocs/storage/adic7000/ug/specs.htm
Now I'll need to find some cleverly priced DLT-tapes ;).
> very smart. So we're going to have to invest in some better hardware.
> What would you buy?
From the earlier mention of 'bout 100G of data, I'd shoot for 200G LTO.
> [I imagine this one is going to be dictated to me by HQ, but I'm curios...]
>
--
Eero "Aero" Ahonen
http://www.zbxt.net
aer### [at] removethiszbxtnetinvalid
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Invisible wrote:
> scott wrote:
>>> No, the limitation I'm running into now is space, not time.
>>
>> Buy some bigger tapes then, or more of the current ones?
>
> DDS only goes up to a maximum of 80 GB. My server holds 103 GB. Time to
> move to a different tape technology - but which one? There are many to
> choose from.
>
I'm backing up 180 GB at the moment
The storage space for data is 250GB.
The backup space available is 250GB - but not everything in the data is
backed up.
Backups take 2.5 hours to run at the moment.
Tom
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Invisible wrote:
> DDS only goes up to a maximum of 80 GB. My server holds 103 GB.
Sorry. Something looks wrong in these numbers. 103 GB? You don't mean
103T? I can't even go to the store and buy a hard drive that small,
unless it's a laptop hard drive. You could mirror the whole drive every
day of the week for about $500.
--
Darren New / San Diego, CA, USA (PST)
"That's pretty. Where's that?"
"It's the Age of Channelwood."
"We should go there on vacation some time."
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