LSI DF1153-E1 manual Term, Definition, Usage Examples, controller module or controller tray

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Table 1 Unique Terminology and Concepts

Term	Definition	Usage Examples
canister	Portable, removable container for components. Also	controller canister
	known as CRU.
	Compact unit that contains one or two controllers,
command	power supplies, and fans. Note: The E2400 command	command module
module	module also contains disk drives. Also known as
	controller module or controller tray.
	Compact unit that contains disk drives, power supplies,
drive module	one or two ESMs, and fans. Also known as drive tray or	drive module
	expansion drive module.
	Environmental Services Monitor. Interface board that
	provides interface connections between the drive
ESM	modules and the SCSI bus, and environmental	ESM canister
	information about the drive module to the host. Also
	known as ESM CRU, ECC, or environmental card.
	Gigabit interface converter. A device used in Fibre	copper GBIC minihub
GBIC	Channel networks to convert copper fibre signals to	copper GBIC module
	fiber optic and vice versa.	optical GBIC minihub
		optical GBIC module
	Lights that glow or blink to indicate either a normal	indicator light
light	operating status or hardware error. Also known as LEDs.	Power light
		Fault light

Drive Module Site Preparation Guide 3