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Maximum Number of Disks and Maximum Usable Capacity for Random and Sequential Optimization

Your choice of Random or Sequential optimization affects the maximum number of disks you can include in an array and the maximum usable capacity of a logical drive. You select the optimization mode in the Change Controller Parameters window.

The following tables contain the maximum number of disks per logical drive and the maximum usable capacity of a logical drive.

Note: You can have a maximum of eight logical drives and 44 disks, using one array and two expansion units.

Maximum Number of Disks per Logical Drive

Disk
Capacity
(GB)

RAID 5
Random
RAID 5
Sequential
RAID 3
Random

RAID 3
Sequential

RAID 1
Random
RAID 1
Sequential
RAID 0
Random
RAID 0
Sequential
36.2 14 31 14 31 28 44 14 44
73.4 7 28 7 28 12 44 6 27
146.8 4 14 4 14 6 26 3 13

 

Maximum Usable Capacity (Gbyte) per Logical Drive

Disk
Capacity
(GB)

RAID 5
Random
RAID 5
Sequential
RAID 3
Random

RAID 3
Sequential

RAID 1
Random
RAID 1
Sequential
RAID 0
Random
RAID 0
Sequential
36.2 471 1086 471 1086 507 543 507 1122
73.4 440 1982 440 1982 440 1101 440 1982
146.8 440 1908 440 1908 440 1908 440 1908

 

NOTE: You might not be able to use all disks for data when using 44 146-Gbyte disks. Any remaining disks can be used as spares.

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