advantage of multiprocessor and 64bit system architecture?

[Keenondots]

64bit mode is for supporting more then 16TB per Logical Volume (only for DSS), not for speed. With 32bit mode you can have multiple 16TB Logical Volumes with added Storage License Keys - (4, 8, 16, 32 and 64TB).

Single - 1 CPU

Multi processor - 2 or more (Dual and Quad cores)

TESTING mode runs 2.6.20 kernel version

So, for speed you recommend 32bits of does it not matter?
(DSS in iSCSI - block - mode)

[To-M]

Correct use 64bit if you plan to go beyond 16TB on a single Logical Volume.