Which of the following are three accurate statements that describe Symmetrix GigE Channel Directors? (Choose three)

A.
The GigE SRDF data flow uses two round trips per transfer operation.

B.
The GigE Director network bandwith usage can be throttled downward.

C.
Outboard compression hardware is always required.

D.
Prior to DMX, the GigE Director did not perform data compression.

E.
Compression can be turned off.