Compaq Infortrend System Drive Mapping, 3 Grouping Hard Drives, 4 Partitioning of Logical Units

Figure 10 - 3 Grouping Hard Drives

Drive Channel 0

4

GB

Drive Channel 1

	4	2	2
	GB	GB	GB
ID 5	ID 0	ID 3		ID 2
4	4	2		2
GB	GB	GB		GB
	ID 6	ID 1	ID 0	ID 14

	Local Spare
Global	Drive of LD1
Spare
Drive	RAID 0
RAID 5
8GB	6GB
Logical Drive 0	Logical Drive 1

!As diagrammed above, choosing the members of an array can be flexible. You may divide a logical drive or logical volume into several partitions as diagrammed below, or use the entire logical drive as a single partition, with or without the support of one or several spare drives.

Figure 10 - 4 Partitioning of Logical Units

	Partition 0 - 2GB
RAID 5	Partition 1 - 1GB
8GB
Logical Drive 0	Partition 2 - 5GB

RAID 0 6GB

Partition 0 2.5GB

	Partition 1
Logical Drive 1	1.5GB

!Each logical unit can be associated (mapped) with a host ID (Primary or Secondary ID) or the LUN numbers under host IDs.

System Drive Mapping:

Primary and Secondary IDs

!Host Channel:

Keep in mind that when controllers are successfully combined, host port IDs are available as “Primary” or “Secondary” IDs.

10-6 Infortrend