Nils Breunese (Lemonbit) wrote:
> Hello all,
>
> We're running a BackupPC 3.1.0 installation on CentOS 4 32-bit on a
> machine with the following specs:
>
> - Intel Celeron CPU 2.66 GHz
> - 512 MB RAM
> - BackupPC pool on a single 250 GB ATA 133 drive
>
> We currently running one backup at a time ($Conf{MaxBackups} = 1;).
> This already maxes out the iowait%. The machine is also swapping
> sometimes. If we'd want to do more backups simultaneously, how would
> you prioritize the following possible upgrades:
>
> - Dual (or more) core CPU
> - More RAM
> - Faster drive (more drives (RAID)?)
>
> Thanks in advance,
More RAM first - swapping will kill you and bigger disk buffers will
eliminate a lot of seeking.
More CPU will help with compression and ssh encryption.
There's not much you can do about the disk itself. A lot of money might
buy a slightly faster drive. RAID0 will help with big writes but not
most of the things backuppc does. Do make sure that you are actually
running at the 133Mhz speed (current controller and good cable) and
don't share the controller with another drive on the same cable.
--
Les Mikesell
[EMAIL PROTECTED]
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