Specifications
SCSI to SATA RAID Subsystem | Administrator’s Manual RAID Planning | en 25
Bosch Security Systems F.01U.027.802 | V1 | 2006.11
2.2 Configuring the Array
2.2.1 Starting a RAID System
Here is a flowchart illustrating basic steps to be taken when configuring a RAID system. Hard-
ware installation should be completed before any firmware configuration takes place.
Fig. 2.2 Array Configuration Process
Drives must be configured and the subsystem properly initialized before a host computer can
access the storage capacity.
1. Use the LCD keypad panel, RS-232C terminal program, or the RAIDWatch manager to
start configuring your array.
2. When powered on, the controller scans all the hard drives that are connected through the
drive channels. If a SCSI hard drive is connected after the controller completes initializa-
tion, use the "Scan SCSI Drive" function (only on SCSI-based controllers or subsystems)
to let the controller recognize its presence.
3. Optimize the controller's parameters for your host applications.
4. Configure one or more logical drives to contain your hard drives based on the require-
ments of the desired RAID level, and/or partition the logical drive or logical volume into
two or more partitions.
1. The next step is to make logical drives or storage partitions available through the host
ports. When associated with a host ID or LUN number, each capacity volume appears as
one system drive. The host SCSI or Fibre adapter will recognize the system drives after
the host bus is re-initialized.
2. The last step is to save your configuration profile in the host system drive (the use of
RAIDWatch manager is necessary for this purpose) or to the logical drives you created.
The subsystem is independent from the host operating system. The host operating system will
not be able to tell whether the attached storage is a physical hard drive or the virtual system
drives created by the RAID subsystem.
i
NOTICE!
• A "logical drive" is a set of drives grouped together to operate under a given RAID level
and it appears as a single contiguous volume. The controller is capable of grouping drives
into as many as 128 logical drives, configured in the same or different RAID levels.
• A maximum of 64 "logical volumes" can be created each from one or several logical
drives. A logical drive or logical volume can be divided into a maximum of 64"Partitions."