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{{Warning box| Please read this article before buying and deploying drives. https://raid.wiki.kernel.org/index.php/Timeout_Mismatch
{{Warning box| Please read this article before buying and deploying drives. https://raid.wiki.kernel.org/index.php/Timeout_Mismatch
The new type of SMR drives are NOT suitable for RAID arrays. Beware WD Red NAS drives.
The new type of SMR drives are NOT suitable for RAID arrays. Beware WD Red NAS drives, though recently they have made it clearer which models use SMR.
'''A drive failure can corrupt an entire array'''}}
'''A drive failure can corrupt an entire array: RAID does not replace backup!'''}}
{{Note box| SME Servers Raid Options are largely automated, but with the best laid plans things don't always go according to plan. See also: [[Raid:Manual Rebuild]], [[Raid:Growing]] and [[Hard Disk Partitioning]]. There is a wiki on the Linux software raid, you will find many [https://raid.wiki.kernel.org/index.php/Linux_Raid cool Tips here] }}
{{Note box| SME Servers Raid Options are largely automated, but with the best laid plans things don't always go according to plan. See also: [[Raid:Manual Rebuild]], [[Raid:Growing]] and [[Hard Disk Partitioning]]. There is a wiki on the Linux software raid, you will find many [https://raid.wiki.kernel.org/index.php/Linux_Raid cool Tips here] }}
Login as root, type console. Select Item 5. "Manage disk reduncancy"
Login as root, type console. Select Item 5. "Manage disk reduncancy"
<nowiki>--------Disk Reduncancy status as of Thursday Dec 22 -------
<nowiki>--------Disk Reduncancy status as of Thursday Dec 22 -------
Current RAID status:
Personalities : [raid1]
md2 : active raid1 hda2[0] <-- NOTICE hdb2[#] is missing. Means hdb2[#] failed.
38973568 blocks [2/1] [U_]
md1 : active raid1 hda1[0] hdb1[1]
104320 blocks [2/2] [UU]
unused devices: <none>
Only Some of the RAID devices are unclean. <-- NOTICE This message and
Manual intervention may be required.</nowiki> <-- this message.
Notice the last 2 sentences of the window above. You have some problems. <br>
Notice the last 2 sentences of the window above. You have some problems. <br>
If your system is healthy however the message you will see at the bottom of Raid Console window is:
If your system is healthy however the message you will see at the bottom of Raid Console window is:
