APC SCSI-SATA II manual Physical disk, + + +

Each UDV will be associated with one specific CV (Cache Volume) to execute the data transaction. Each CV could have different cache memory size from user’s modification/setting. LUN is the logical volume/unit, which the users could access through SCSI commands.

LUN 1

UDV 1

LUN 2

UDV 2

LUN 3

Snap

UDV

+

+

+

VG

PD 1 PD 2 PD 3 DS

Global CV		Dedicated
			CV
	RAM

3.6.2Physical disk

Enter “Physical disk” to view the status of hard drives inserted in the system. The following are operation tips:

1.Multiple select. Select one or more checkboxes in front of the slot number. Or select the checkbox at the top left corner will select all. Check again will select none.

2.The list box will disappear if there is no VG or only VG of RAID 0, JBOD. Because these RAID levels cannot be set as dedicated spare disk.

3.These three functions “Free disc”, “Global spares”, “Dedicated spares” can do multiple selects, too.

4.The operations of the other web pages (e.g.: volume config of VG, UDV, CV, LUN pages) are similar to previous steps.

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