Direct Mapping

2-Understanding RAID

The RAIDBank5 can simply pass through individual disks to the host operating system. In this mode, all 5 disks are individually accessible to the host operating system. No RAID functions are performed.

Hot Swappable Disk support

Your RAIDBank5 has a built in protection circuit to support replacement of disk drives without having to shut down or reboot the RAID. In case of drive failure, the failed drive can be removed from the RAIDBank5 and replaced with a new drive without disrupting dataflow to the host computer.

Hot Spare Drives

A hot spare drive is an unused online available drive predesignated for replacing a failed disk drive. Any unused online available drive installed but not belonging to a RAID set can be defined as a hot spare drive. Hot spares permit you to replace failed drives automatically without powering down your RAIDBank5. When your RAIDBank5 detects a drive failure in a RAID 1,10,3 or 5 volume sets the system will automatically and transparently rebuild using any available hot spare drive(s). The volume set(s) will be reconfigured and rebuilt in background, while the RAIDBank5 continues to handle system requests. During the automatic rebuild process, system activity will continue as normal, but system performance will be reduced and the affected volume(s) will not be fault tolerant until the rebuild process is complete.

Hot-Swap Disk Rebuild

A Hot-Swap function can be used to rebuild disk drives in arrays with data redundancy such as RAID level 1, 10, 3, and 5. If a hot spare is not available at time of drive failure, the failed disk drive must be replaced with a new disk drive so that the data on the failed drive can be rebuilt. Upon insertion of a replacement disk, the RAIDBank5 automatically and transparently rebuilds failed drives in the background with user-definable rebuild rates. The RAIDBank5 will automatically restart the system and the rebuild if the system is shut down or powered off abnormally during a reconstruction procedure condition. Please note that the affected volume(s) will not be fault tolerant until the rebuild process is complete.

RAIDBank5 Owner’s Manual