John Summerfield wrote:

Mark Schoonover wrote:

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Benjamin Smith wrote:

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On Wednesday 17 January 2007 04:41, Karanbir Singh wrote:

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Fajar Priyanto wrote:

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I have a task on setting up a cluster of 2 servers for providing ftp service. We use RH's Cluster suite. However the cluster setup is lack of shared network storage, so the /var/ftp/pub is mounted on each server. The cluster is set

So, are we on the right direction? Or is there any better way? Thank you very much,

have you considered using drbd ?

Well, I was going to suggest using RAID1 with one of the partitions being a network block device, but this looks even better!

Rsync is great for period backups (not more than once per day or so)

I run rsync every hour on multi-terrabyte systems with no problems. The NASes do have a private GB network to push the data through, so the user network doesn't see the network traffic generated by rsync. I can have anywhere from just a couple hundred megs, to 100 gigs of data change inside of an hour.

OTOH I found running rsync daily over the Internet to backup a Linux box impractical; it used heaps of RAM (and swap) and ran for hours. Fortunately, its excessive use of swap (several times real RAM) didn't lead to thrashing.

This seems rather odd performance for rsync. As I type this, I'm sending 800GB to a new server, and rsync is using 28MB of RAM. I don't think network speed is an issue with how much RAM/SWAP is getting used by rsync. Could you post your rsync command, I'm curious to what your running. What version of rsync are you using??

Now, I run a hand-crafted script that makes a compressed ISO (mkzftree) and I rsync that. I'm maintaining a backup filesystem of about 8 Mbytes remotely now; the rsync runs for a little over two hours daily.

That's what I love about *NIX, more than one way to skin a cat!

Thanks!

Mark Schoonover IS Manager American Geotechnical - California, Nevada and Arizona V-> 858.450.4040 F-> 714.685.3909 C-> 858.472.3816 * software development * systems administration * networking * security *