I have FreeBSD 8.2 with ZFS v28. 8 cpu core, 16Gb ram. Two disk drives (1.5Tb WD Green) on zfs mirror raid.
My system strangely uses memory. With alot of free (wired) memory it start to use swap and then doesn't clean it! Swap usage keeps growing. munin-graph swap
And then I see on my kvm this messages:
All file reads or writes seems very slow. When I use ssh and for example do
nano /etc/rc.conf it pauses for 3-5 seconds before it works.
Will my disk drives die soon? Or is the problem elsewhere?