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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 8.15. 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 8.15 RAID 10 Array Configuration<place for figure>| Drawio |
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When evaluating a fault on the Infoblox-4010, it is best to think of the disk subsystem as a single, integrated unit with four components, rather than four independent disk drives. For information, see Evaluating the Status of the Disk Subsystem.
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The disk drives of the Infoblox-4010 are located on the appliance front panel. To the right of each drive, two LEDs display connection and activity status. Table 8.10 lists the disk drive LED combinations and the states they represent.
Table 8.10 Infoblox-4010 Disk Drive LED Combinations| Online/Activity LED (Green) | Fault/UID LED (Amber/Blue) | Description |
|---|
| On, off, or blinking | Alternating amber and blue | The drive has failed, or it has received a predictive failure alert; it also has been selected by a management application. |
| On, off, or blinking | Steadily blue | The drive is operating normally. |
| On | Amber, blinking regularly (1 Hz) | The drive has received a predictive failure alert. Replace the drive as soon as possible. |
| On | Off | The drive is online but it is not currently active. |
| Blinking regularly (1Hz) | Off | Do not remove the drive. The drive is rebuilding. Removing the drive may terminate the current operation and cause data loss. |
| Blinking irregularly | Amber, blinking regularly
(1 Hz) | The drive is active, but it has received a predictive failure alert. Replace the drive as soon as possible. |
| Blinking irregularly | Off | The drive is active and operating normally. |
| Off | Steadily amber | A critical fault condition has been identified for this drive, and the controller has placed it offline. Replace the drive as soon as possible. |
| Off | Amber, blinking regularly
(1 Hz) | The drive has received a predictive failure alert. Replace the drive as soon as possible. |
| Off | Off | The drive is offline, a spare, or not configured as part of an array. |
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| Replacing a Failed Disk Drive |
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| Replacing a Failed Disk Drive |
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Replacing a Failed Disk Drive
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