Re: [BackupPC-users] maximum clients/data
2008-11-26 12:34:26
On Wed, Nov 26, 2008 at 07:18:11AM -0500, tmassey AT obscorp DOT com wrote:
> > Is there some way to determine approximately how many clients (or how
> > much data) can be backup up with backuppc?
>
> Via EPIA EN 1.2GHz processor, 512MB RAM, single 750GB PATA hard drive
> backs up 4 different servers, with a total data storage of ~600GB: 2 x
> ~250GB servers, the remaining servers with less than 50GB between them.
> Full backups weekly, incrementals daily. Oh, and this is over 100Mbit.
>
> Everybody freaks out about the amount of RAM: they tell me I need more for
> better speed. However, I've watched vmstat throughout the process and the
> swap BI/BO remains at 0.
Have you looked at the wait column (last one) in vmstat? How many files
per server do you have? I've got over 2 million files in the pool. If
your server is swapping, you _need_ more RAM. If it is not, more RAM
will still serve as a disk cache, e.g. for filesystem structure and
metadata and helps a lot to reduce I/O wait times.
Bye,
Tino.
--
"What we nourish flourishes." - "Was wir nähren erblüht."
www.lichtkreis-chemnitz.de
www.craniosacralzentrum.de
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- [BackupPC-users] maximum clients/data, chantal
- Re: [BackupPC-users] maximum clients/data, Rob Owens
- Re: [BackupPC-users] maximum clients/data, Tino Schwarze
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data,
Tino Schwarze <=
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data, Tino Schwarze
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data, Tino Schwarze
- Re: [BackupPC-users] maximum clients/data, Jeffrey J. Kosowsky
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data, Jeffrey J. Kosowsky
- Re: [BackupPC-users] maximum clients/data, chantal
- Re: [BackupPC-users] maximum clients/data, Ski Kacoroski
- Re: [BackupPC-users] maximum clients/data, tmassey
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