Compaq Infortrend manual A.R.T. Support, Redundant Controller

S.M.A.R.T. Support:

Copy & Replace Drive	Supported. User can choose to clone a member drive
	before drive failure.
Drive S.M.A.R.T. Support	Supported, with intelligent error handling
	implementations.
User selectable modes for	1.	Detect only
S.M.A.R.T.	2.	Perpetual Clone on detection of S.M.A.R.T. condition
	3.	Clone + Replace

Redundant Controller:

Active-active redundant	Supported
controller
Synchronized cache	Supported. Through single or redundant, dedicated
	synchronizing channels. Synchronized cache over Fibre
	loops is supported.
	Synchronized cache can be disabled when using write-
	through mode in redundant controllers to prevent
	performance trade-offs.
Write-back cache	Yes; with synchronized cache connection between
enabled in redundant	controllers.
controller mode
Automatic Failover	Yes for all PowerPC controllers (user's interaction
	necessary)
Automatic Failback	Yes for all PowerPC controllers (user's interaction
	necessary)
Fibre channel redundant	Supported.
controller
Controller Hot-Swap	! No need to shut down the failed controller before
	replacing the failed controller. (Customer's design-in
	hot-swap mechanism necessary)
	! Support on-line hot-swap of the failed controller.
	There is no need to reset or shutdown the failed
	controller. One controller can be pulled out during
	active I/Os to simulate the destructive controller failure.
	(Customer's design-in hot-swap mechanism
	necessary)
Redundant Controller	SentinelRAID: SCSI; RCC Reset signals built-in
Communication channel	EonRAID: Fibre channel(s); RCC cable necessary
Parity Synchronization	Supported.
in redundant controller
write-back mode to
avoid write-hole

B-6 Infortrend