Managing the Infoblox 4000 Series Disk Subsystem
- Jyothi KP
Analytics
Infoblox 4000 Series appliances use a RAID-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. No maintenance or special procedures are required to service the disk subsystem.
RAID-10 uses a total of four disk drives to create a RAID 0 array from two RAID 1 arrays, as shown in Figure 13. It uses mirroring and striping to form a stripe of mirrored subsets. This means that the array combines — or stripes — four disk drives, creating a single logical volume (RAID 0). RAID-10 combines the 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 13 RAID-10 Array Configuration
Evaluating the Status of the Disk Subsystem
You can monitor the disk subsystem by using the CLI command show hardware_status.
To see a detailed status report, log in to the Grid Manager and from the Grid tab, select the Grid Manager tab -> Members tab -> member, and then click the Detailed Status icon. (For more information, refer to the Infoblox NIOS Administrator Guide.)
The color of the RAID icon indicates the RAID array status on the Infoblox 4000 Series.
Table 9 RAID Array LED States
Color | Meaning |
|---|---|
Green | The RAID array is in an optimal state. |
Yellow | A new disk was inserted and the RAID array is rebuilding. |
Red | The RAID array is degraded. At least one disk is not functioning properly. The Grid Manager lists the disks that are online. Replace only the disks that are offline. |
The Grid Manager 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 Description column in the Detailed Status panel. The Infoblox 4000 Series appliances use only the IB-Type 3 disk type. For the array to function properly, all disk drives in the array must have the same disk type.
When you have a mismatched disk in the array, promptly replace the disk with a replacement disk from Infoblox to avoid operational issues.
Note: For replacement IB-Type 3 disk assembly part numbers, see Table 10.