On Sat, Jan 9, 2016 at 6:25 PM, Michael <[email protected]> wrote:
>
> My current backup pool is ~ 12 machine. 11 on Linux and 1 windows
> machine. My backup machine is a 3TB Lacie-Cloudbox, with 256 MB memory.
> Some of you might say that 256 MB is not enough. Actually I've even seen
> posts on the net saying that you would need a server with several GB
> RAM. This is just insane. A typical PC in my pool has ~600k files.
> Representing each of them with a 256-bit hash, that's basically 20MB of
> data to manage for each backup. Of course you need some metadata, etc,
> but I see no reason why you need GB of memory to manage that.
And yet your complaint is that your server is slow... With a
reasonable amount of RAM, much of the directory structure, inodes, and
the next parts of files currently being read will already be in cache
when you need them and writes will be substantially buffered.
Otherwise you'll wait for the disk head to bounce around and always be
in the wrong place.
--
Les Mikesell
[email protected]
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