I have a Dell PowerEdge 2800 with a Xeon processor running at 3.2Ghz. The
box has 4G of ram, and six 146G SCSI drives in a Raid 5 array. The server
has room for two more drives. Aside from file services it's also the primary
Netware 6.5sp7 server on my network (there's a second one, but that's for
testing and experimentation) running iManager, Remote Manager, NDPS,
QuickFinder, anti-virus software and the such. The server supports about 100
architects and CAD technicians. The server has dual gigabit NIC's that are
teamed, and it connects to several Gigabit switches. The CAD stations are a
mix of Gigabit and 100 Mbit capable systems.

I figure I need to add a terrabyte of storage capacity to my network (those
CAD and photoshop files are eating disk space fast.) With this system being
over three years old and being used for so many processes, which would make
more sense?
1) Purchase a NAS appliance with 1T of space and add to the network?
2) Purchase an iSCSI device with 1T of space and connect to the primary
3) Purchase a server and configure as a new Netware 6.5sp7 server on my
network, with 1T of disk space?

I'm just wondering, with iSCSI, how does Netware handle caching of the file
structure on an iSCSI appliance. Does the Netware server need to use it's
own ram to cache file info for both its local NSS pools/volumes as well as
those created on the iSCSI device, or does the iSCSI appliance have it's own
ram with which to handle that caching?

I look forward to your recommendations