Western Digital WDBLGT0040KBK manual Quarters of the system capacity available for data storage

	MANAGING THE WD SENTINEL SERVER (DASHBOARD)
Settings	Description
Storage	Displays storage information associated with the WD Sentinel server. The
	WD Sentinel server holds up to four of WD’s hard drives optimized for
	quality, reliability and performance and features RAID levels 1 or 5 to
	enhance performance and data protection.
	RAID is an acronym for Redundant Array of Independent Disks. With two
	drives installed, the WD Sentinel server uses RAID 1 (mirror). With three or
	four drives installed, the server uses RAID 5, which offers fast
	performance by striping data across all drives. This arrangement protects
	data by dedicating a quarter of each drive to fault tolerance, leaving three
	quarters of the system capacity available for data storage.
	Type: RAID level
	Total Capacity: Maximum amount of storage space (TB) available.
	Available Capacity: Amount of storage (TB) left available for use.
	Alert Threshold: The percentage of storage capacity used above which
	you receive alert notifications that the storage is approaching maximum
	threshold.

Status: The status of the server storage may be:

•Healthy–All drives are in the optimal state.

•Degraded–A single drive failed; data is protected, but performance is degraded. (A failed drive must be replaced with a healthy drive as soon as possible to fully protect your server and data.)

Status of drives 1-4:The status of a drive may be:

		•	Normal
		• Failed!: Visit WD Store to replace.
	CAUTION: Imminent failure detected. Please replace this hard drive
	immediately.
System Temperature	Enclosure: The temperature within the server enclosure.
	CPUs 1 & 2: The Temperature, status, and status description for each
	CPU. (The server does not have two physical CPUs but instead uses a
	dual core CPU. CPU 1 and CPU 2 represent the details for each core.)
	The status may be:
		•	Normal
		•	Warm
		•	Hot
Cooling Fans	The status of the server’s cooling fan may be:
	•	Active
	•	Inactive
	Speed of revolutions in RPMs.
Power Supplies	The server has two power supplies. If you use both and one fails, the
1 & 2	other takes over and the WD Sentinel server remains operational. The
	status may be:
	•	Active
	•	Inactive

WD SENTINEL DX4000	22
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