Adaptec 2074700-R User Guide - Page 132
Con Array Drives
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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. 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 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 132 Software Installation and User's Guide