Adaptec 2074700-R - ICP Vortex GDT8514RZ RAID Controller, Руководство пользователя

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132 Software Installation and User’s Guide
ICP RAID Console
Next, enter the appropriate drive size and press Enter (see Figure 10-82 ). ICPCON allows
you to limit the hard disk size for this host drive. This becomes important when you
configure disk arrays and you want to ensure that future drives added to the disk array fit
in the array (for replacement purposes). Should a new drive have less than the required
capacity, ICPCON cannot accept it.
Figure 10-82. Drive Size
If you select two or more physical drives with the space bar and press Enter, ICPCON
suggests the creation of a logical drive of the type
Chain . In some literature, disk chaining
is also called Disk Spanning .
Picture the functioning mechanism of a type Chain logical drive as follows: all hard disks
forming the logical drive are linked together one by one in the exact same order in which
they were selected with the space bar. This concatenation can be compared to a chain. If,
for example, the logical drive consists of 4 hard disks with 2000MB each, the logical drive
will have a capacity of 8000MB. When data is written to this logical drive, the first hard
disk is filled first, then the second, and so on.
Although it is not advisable, logical drives of the type Chain can also be components of
array drives.
10.5.4 Configure Array Drives
The Configure Array Drive menu option allows you to configure array drives (hierarchy
level 3). Array drives with the following listed RAID levels can be configured within this
menu.
The ICP RAID controller can manage up to 35 array drives (with different RAID levels)
simultaneously. Obviously, the number of hard disks will limit the number of parallel
arrays that can be used.
From the Advanced Setup menu, select the Configure Array Drives option and press Enter
to display the Select Array Drive menu ( Figure 10-83 ).
Figure 10-83. Select Array Drive
RAID 0 Pure Data Striping without Redundancy
RAID 1 Disk Mirroring
RAID 4 Data Striping with Dedicated Parity Drive
RAID 5 Data Striping with Striped Parity
RAID 10 RAID 0 Combined with RAID 1