It has 3 gigs of RAM. Just Zimbra runs on this except for a couple backups each night which takes a bunch of RAM because it compresses. The graph is the RAM usage for a week. You can see each night when it runs the backups.

Code:
admin@mail:~$ free -m
total used free shared buffers cached
Mem: 3042 2929 112 0 146 1425
-/+ buffers/cache: 1357 1685
Swap: 8911 0 8910 Code:
top - 09:09:35 up 181 days, 18:01, 1 user, load average: 0.06, 0.12, 0.12
Tasks: 105 total, 2 running, 103 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.0% us, 0.7% sy, 0.0% ni, 92.0% id, 5.3% wa, 0.0% hi, 0.0% si
Mem: 3115284k total, 3003616k used, 111668k free, 150592k buffers
Swap: 9124880k total, 92k used, 9124788k free, 1460260k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2675 zimbra 17 0 6980 4672 1012 S 0.7 0.1 0:06.03 zmmtaconfig
1 root 16 0 1564 528 460 S 0.0 0.0 0:02.44 init
2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
5 root 10 -5 0 0 0 S 0.0 0.0 0:00.57 events/0
6 root 11 -5 0 0 0 S 0.0 0.0 0:00.01 khelper
7 root 10 -5 0 0 0 S 0.0 0.0 0:00.01 kthread