6-22 Sun StorEdge 3000 Family Installation, Operation, and Service Manual • May 2004
Note – Logical volumes are unsuited to some modern configurations, such as Sun
Cluster environments, and do not work in those configurations. Use logical drives
instead. For more information see “Summary of Array Configuration” on page 5-6.
Note – If you want to create 1024 LUNs in loop mode, you need eight logical drives
with each having 128 partitions.
For redundancy across separate channels, you can also create a logical drive
containing drives distributed over separate channels. You can then partition each
logical drive into several partitions.
FIGURE 6-3 Example of an Allocation of Local and Global Spare Drives in Logical
Configurations
Note – To reassign drives and add additional local or global spare drives on your
preconfigured array, you must first unmap and then delete the existing logical
drives, and then create new logical drives. For more information about deleting a
logical drive, see “Deleting Logical Drives” on page 6-19.
Drive channel 0
Logical drive 1
Global spare Local spare for LD1
Logical drive 0
Drive channel 1
36
GB
36
GB
36
GB
36
GB
36
GB
36
GB
36
GB
36
GB
ID5 ID0
ID6 ID1 ID0 ID14
ID3 ID2
RAID 5
RAID 3
...to other drives on loop
...to other drives on loop
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