When the rebuild completes, it will automatically restart the Unitrends processes again. Shut down the Unitrends processes so that the rebuild will go faster (optional, but takes 1/3 the time). To replace a disk, the recommended method is to shutdown the system, replace the failed disk drive, and then power up the system. sda), and you just need to rebuild it, do this: If the existing disk is marked as failed (e.g. Used to physically locate and verify the drive that needs to be replaced. The readd function now also can rebuild a drive back into an array even if it has been removed from some of the RAID arrays. In this case, no drives have been dropped from the RAID sets. The scenarios are if there are pending sectors and would like to initiate a rebuild to fix them. Used in situations where you want to initiate a rebuild on a good RAID array. Afterwards, it will rebuild that drive back into the array. The hotswap function will remove the specified device from all associated RAID sets, then ask the user to remove the drive and replace with the new drive. Run this after the replacement disk is on-site, but BEFORE swapping the disk. Used in situations where you want to replace under warranty a failed/failing drive without rebooting. #Hotswap warranty replace without rebooting Used after powering off the system, removing the old disk, inserting the new disk and booting up again. #rebuild the replaced disk after rebooting The speed function could be used if the rebuild was started without the services stopped, and now the services are stopped so that the rebuild can take up more resources. rebuild_disk -help #show the help message.You should use the /usr/bp/bin/rebuild_disk script whenever possible. Also the shows there is a missing device in that RAID volume. You can see from this output where devices have a (F) beside it showing that device is in a failed state. To find out specific information on the RAID statuses use this ~]# cat /proc/mdstat
#Raid alert software software#
The 1U rack mount units and desktop units use software RAID on a larger scale. Our 2U/3U sized rack mount units use software RAID on the two internal OS drives. Please use utmost care, please use rebuild_disk instead. WARNING!!! Running sfdisk, parted, or mdadm commands can be dangerous. *** Caution: For advanced users only, requires command-line usage *** This article will outline some common causes and methods for rebuilding the RAID volumes.ĭPU appliances utilizing software RAID RESOLUTION It is possible for the software RAID to get into a degraded state. PurposeĪlmost all Unitrends appliances use some form of software RAID. When any of the software RAIDs enter a degraded state an alert is shown in the User Interface as well as emailed in the daily status email.
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