The PT-2200 uses a RAID (Redundant Array of Independent Disks) 10 array to provide the optimum mix of high database performance and redundant data storage with recovery features in the event of disk failures. The disk array is completely self managed. There are no maintenance or special procedures required to service the disk subsystem.
RAID 10 (or sometimes called RAID 1+0) uses a minimum of four disk drives to create a RAID 0 array from two RAID 1 arrays, as shown in Figure 14. It uses mirroring and striping to form a stripe of mirrored subsets. This means that the array combines — or stripes — multiple disk drives, creating a single logical volume (RAID 0). RAID 10 combines the high performance of RAID 0 and the high fault tolerance of RAID 1. Striping disk drives improves database write performance over a single disk drive for large databases. The disks are also mirrored (RAID 1), so that each disk in the logical volume is fully redundant.

Figure 14 RAID 10 Array Configuration

Evaluating the Status of the Disk Subsystem

You can monitor the disk subsystem through the Infoblox GUI, the scrolling front panel LCD display, and the front panel LEDs next to the disk drives. In addition, you can monitor the disk status by using the CLI command show hardware_status.
To see a detailed status report, log in to the Infoblox GUI and from the Grid -> Grid Manager tab, select the appliance, and then click the Detailed Status icon. (For more information on the Detailed Status panel, refer to the Infoblox Administrator Guide.)
The color of the RAID icon indicates the status of the RAID array on the Trinzic 2210 or Trinzic 2220.

The Infoblox GUI also displays detailed status of the RAID array. In the event of a disk failure, you must replace the failed disk with one that is qualified and shipped from Infoblox and has the same disk type as the rest of the disks in the array. The appliance displays information about mismatched disks in the Detailed Status panel.
Note that all disk drives in the array must have the same disk type (IB-Type5) for the array to function properly. When you have a mismatched disk in the array, you must promptly replace the disk with a replacement disk from Infoblox to avoid operational issues.

Appliance Front Panel

The disk drives are located on the left side of the appliance front panel. To the right of each drive there are two LEDs that displays the connection and activity status of each drive.
Table 4 Disk Drive LEDs