fsck of big disk

[Valerio Daelli]

Hi list

we have a freshly installed FreeBSD 6.2 machine with a gstriped external disk,
of 5.3Tb. The disk is composed of two slices of 2.6 Tb.
We are trying to have a (background) fsck of it but few hours later
since the start of the check
the host get unresponsive: it responds to ping but it doesn't let
login anyone, nor by ssh
nor by console.
In the meanwhile we are having a large rsync from another host.
Tonight during the fsck/rsync we had a reboot, without special
messages on the console.
We have 1Gb of RAM on this server.
Is 1Gb too small as memory to have a fsck and a rsync on a server with
5.3Gb as external disk?
Thanks for your precious help

Valerio Daelli

Server:
i386 - HP DL360
CPU pentium4
1Gb RAM
HBA: LSI Logic 929
External disk: Apple XRAID with upgraded firmware