[OpenIndiana-discuss] Backups and snapshots

[Jonathan Adams]

We snapshot daily, automatically, so the system is only up to 1 day
out ... which is enough for us ... that is all we used to do with
tape, so it is comparable.

It hasn't stopped some of our users spending all day on a document
creating/editing and then they go and delete it in the same day, but
then we just laugh at them ... on the other hand we've had users that
did all that without saving the document once during the day and then
their computer would crash (although I think we've trained them out of
that now) ...

Biggest use of our servers is generally email (after you exclude the
140Mb word documents that some muppets produce), and that is recorded
in and out on the mail servers. All email can be replayed, so if need
be we can always get that to a closer point than that of the
snapshots.

It's not a "perfect" system but it does us fine.

Jon

On 13 June 2011 11:53, LaoTsao <laotsao at gmail.com> wrote:
> Question do you have ha on each site?
> Or you just use 2nd site to protect 1st site
> Thx
>
> Sent from my iPad
> Hung-Sheng Tsao ( LaoTsao) Ph.D
>
> On Jun 13, 2011, at 4:49 AM, Jonathan Adams <t12nslookup at gmail.com> wrote:
>
>> We've given up on tapes in house, they are far to costly per Gb, and
>> we were spending all day backing up to them.
>>
>> We have gone over to a fully ZFS system ... replicated at 3 sites per
>> active machine.
>>
>> data is generated (by users) at site 1 (on ZFS raid ... generally 2
>> disks), this is then snapshot'd and sent to remote computers at other
>> sites, which is restored onto external 3 way ZFS RAID (usb) ... after
>> 1 year these disks are taken offline and stored in fireproof safes,
>> leaving the latest snapshot on a new set of drives and purging all
>> previous snapshots. (we also replicate to another machine at the same
>> site as the original to guard for hardware failure, but that is kept
>> as a convenience only)
>>
>> It's not perfect, but since the machines are physically distinct we
>> have data integrity (unlikely to lose all 3 machines at once, or all
>> drives) ...
>>
>> we have to keep all our data for, currently, 7 years ...  we keep it
>> longer on tape, but that isn't too bad a price.
>>
>> we have currently 4 sets of disks, so that's 12 disks a year per site,
>> for 7 years ... we just had to make sure we got reasonable fireproof
>> safes.
>>
>> The upside to this is that it now so much easier to get back any files
>> that one of our users "accidentally" deletes, or overwrites ...
>>
>>> ----------------------------------------------------------------------------------
>>> Da: Gary Driggs
>>> A: Discussion list for OpenIndiana
>>> Data: 11 giugno 2011 22.56.39 CEST
>>> Oggetto: Re: [OpenIndiana-discuss] Backups and snapshots
>>> On Jun 11, 2011, at 1:40 PM, Gabriele Bulfon
>>> wrote:
>>> BTW, discussion forked into NFS vs iScsi.
>>> What is your backup strategies on tapes?
>>> That will vary considerably depending on the size of your org, its budget, and the amount of data it amasses &must archive for business needs and/or compliance reasons.
>>>
>>
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