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Physical Devices used for Logical Drives
Physical Devices of lower Physical Device Numbers are used preferentially for Logical Drives to be created
excluding those for making Hot Spares.
Ex. : If Physical Devices 1 - 7 can be used for Easy Configuration, Logical Drives #1 is created with Physical
Devices 1, 2, and 3 in the ascending order of Physical Device Numbers and Logical Drives #2 is created with
Physical Devices 4, 5, and 6. Physical Device 7 (the largest number) is used as a Hot Spare.
Figure 16 Assigning Physical Devices in Easy Configuration 1
If more than one Logical Drive are created and the number of Physical Devices configuring a Logical Drive is
not equal to others, a larger number of Physical Devices should be assigned to a Logical Drive having a
smaller logical number.
Ex.: If Physical Devices 1 - 7 can be used for Easy Configuration and two Logical Drives are created, Logical
Drives #1 and #2 are created with four Physical Devices 1 - 4 and three Physical Devices 5 - 7, respectively.
Figure 17 Assigning Physical Devices in Easy Configuration 2
Physical Devices in which S.M.A.R.T. errors are detected cannot be used to create Logical
Drives.
Physical
Device 1
Physical
Device 2
Physical
Device 3
Physical
Device 4
Physical
Device 5
Physical
Device 6
Physical
Device 7
Hot Spare
Logical
Drive #1
Logical
Drive #2
Physical
Device 1
Physical
Device 2
Physical
Device 3
Physical
Device 4
Physical
Device 5
Physical
Device 6
Physical
Device 7
Logical
Drive #1
Logical
Drive #2
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