Logical Drive - Fujitsu PRIMERGY RX200 S2 User Manual

1.3

Logical Drive

Logical Drive
A logical drive is a logical hard disk space consisting of multiple hard disk drives. It is recognized in
the same manner as a single hard disk by the OS.
In the following figure, a RAID1 disk array is created using 2 hard disks.
It is recognized by the OS as if a single hard disk is connected.
In case of RAID1, the same data is written redundantly to 2 hard disks.
Use hard disks of the same capacity and speed for Disks 1 and 2.
Logical drive has 3 types of status as follows:
• Online
Indicates that the logical drive is operating properly.
• Critical
Indicates that the logical drive is operating without redundancy due to a failure of 1 hard disk. In
this case, replace the failed hard disk as immediately as possible and perform the procedure to
recover the status to "Online" (rebuild). For more details, refer to "1.4 Rebuilding/Initializing a
Logical Drive" ( pg.10).
• Offline
Indicates that the logical drive is not operating. This status occurs when 2 hard disks that compose
the logical drive fail. In this case, data in the logical drive will be lost.
In the case shown in the figure above, if Disk 1 fails for instance, the logical drive status becomes
"Critical".
For the onboard SCSI array controller for this server, only one logical drive is created.
Multiple logical drives cannot be created.
Logical drive 0
Disk 1 Disk 2
Chapter 1 Features (Product Overview/Note)
9