User manual

Figure 3.5.1
3.5.1 Volume relationship diagram
V
G
PD 2 PD 3 DS PD 1
UDV 1 UDV 2
Snap
UDV
Global CV
+
LUN 1 LUN 2 LUN 3
+
+
Dedicated
CV
RAM
The above diagram describes the relationship of RAID components. One VG
(Volume Group) consists of a set of UDVs (User Data Volume) and owns one
RAID level attribute. Each VG could be divided into different UDVs. The UDVs
from one VG share the same RAID level, but may own the different volume
capacity. Each UDV will be associated with one specific CV (Cache Volume) to
execute the data transaction. Each CV could own the different cache memory
size. LUN is the logical volume, which the users could access by using the SCSI
commands.
3.5.2 Physical disk
Enter “Physical disk” to view the status of hard drives inserted in the system.
The following are operation tips:
1. Multiple select can be done. Select one or many 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.
Enhance technology UltraStor RS16
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3. These three functions “Free disc”, “Global spares”, “Dedicated
spares” can execute multiple selects.