Luke

I'm suprised you got as far as you did with 512mb of ram.
I tried dss lite v5 with 512mb a while back and it did not let me boot

I would use at least 2GB of RAM, (it's cheap these days)
If your using file I/O it will use the ram for cache


Minimum Hardware Requirements:
x86 - compatible PC
1 GByte RAM
CPU (1 GHz or faster are recommended)
HDD (SATA, SAS, SCSI, ATA) / iSCSI Storage
Network Interface Card