Asus DS300j G2 Series User Manual

Contents

DS300f G2 Series User Manual215rebuIlDInG a DISk arrayWhen you rebuild a disk array, you are actually rebuilding the data on one physical drive.• When a physical drive in a disk array fails and a spare drive of adequate capacity is available, the disk arraybegins to rebuild automatically using the spare drive.• If there is no spare drive of adequate capacity, but the Auto Rebuild function is ENABLED, the disk arraybegins to rebuild automatically as soon as you remove the failed physical drive and install an unconfiguredphysical drive in the same slot. See “Making Rebuild Settings”• If there is no spare drive of adequate capacity and the Auto Rebuild function is DISABLED, you must replacethe failed drive with an unconfigured physical drive, then perform a Manual Rebuild. See “Rebuilding a DiskArray”ImportantIf your replacement disk drive was formerly part of a different disk array or logical drive,you must clear the configuration data on the replacement drive before you use it. See“Clearing a Stale or a PFA Condition”•IncomPlete arrayA more serious, but far less common problem is an Incomplete Array. An incomplete array results from aphysical drive that fails or becomes missing during:• RAID level migration• Disk array transportMigrAtionNormally, if a physical drive or the controller fails during migration, the disk array goes critical, and you canrebuild it.trAnsPortTransport is the action of moving the physical drives of a disk array:• To different slots in the same enclosure• From one enclosure to anotherIf a physical drive fails during a transport, or you do not move all of the physical drives to their new locations,ASUS Storage Management displays an incomplete array. When ASUS Storage Management discovers anincomplete array, it displays a dialog box asking you to:• Click the OK button to accept the incomplete array.• Click the Cancel button to reject the incomplete array.AccePting An incoMPlete ArrAyBefore you accept the incomplete array, be sure all of the physical drives are present and that their drive carriersare properly installed into the enclosure. See “Installing Physical Drives”If you choose to accept the incomplete array:1. Click OK in the incomplete array dialog box.2. Check the operational status of the logical drives in the array.• If the logical drives are Critical, proceed with a rebuild.• If the logical drives are Offline, contact Technical Support.3. Restore your data from a backup source.If you choose NOT to accept the incomplete array:1. Click Cancel in the incomplete array dialog box.2. Do one of the following:• Delete the array. This action deletes all logical drives on the array.• Replace the missing physical drive.