On 13.11.2018 18:15, Dmitri Maziuk via Bacula-users wrote:
On Tue, 13 Nov 2018 09:47:32 -0500
Josh Fisher <jfis...@pvct.com> wrote:
On 11/13/2018 5:38 AM, Peter Milesson wrote:
Hi Markus,
I know my suggestion isn't concerning autoloaders, but it's a safe and
working alternative to tapes (and all the hassles).
I setup a dedicated backup station with 13TB of RAID10 storage. It's
placed in a different location from the servers, and connected to the
network backbone with a 10Gbit/s link. It's running CentOS 7.5, and
utilizing the mhvtl virtual tape library. It's working very smoothly,
and reliably. The cost of building the rig, running, and
administration is quite on the plus side compared to tapes (been
there, done that).
I cannot see how the cost is lower. A 10G link to another location is
extremely expensive in my area. I see the same problem with using cloud
storage, S3, etc. The cost of the mhvtl rig or S3 storage is not the
issue, but rather the ongoing cost of the bandwidth required to transfer
the data in a timely manner. It may be different elsewhere, but in my
area the bandwidth is far more expensive than tapes.
Do you need a 10G link though? -- For the amounts I'm backing up here 1G works
fine.
The other issue is RAID-10 and mhvtl: if you do disk backup, why go through the
extra layer of mhvtl? And not use ZFS -- I just finished replacing 4TB drives
w/ 8TB ones in our server, with no downtime.
Hi Dmitri,
Using a standard 1G link posed a bottleneck during the monthly full
backup session of several servers. 10Gbit NICs are readily available and
not very expensive. Measuring the throughput, it's around 2,5 Gbit/s
when backing up Linux servers. For some reason Windows servers seem to
be much slower (OS overhead?). Most of the data is on Linux servers, so
it really paid off.
The backup station is a Linux based rig with CentOS 7.5. I'm not
completely convinced about the ZFS support under CentOS. Don't want to
experiment too much with valuable data. And the mhvtl is just to keep
compatibility with tapes. I'm familiar with that, and more or less
copied the configuration when I switched hardware. It works, and works
well (don't touch something that works).
Best regards,
Peter
_______________________________________________
Bacula-users mailing list
Bacula-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bacula-users
