Chapter 12. Troubleshooting228 3ware Serial ATA RAID Controller User Guidethe rebuild. However, due to ATA drives’ ability to reallocate sectors on writeerrors, the rebuild failure is most likely caused by the source drive of therebuild detecting some sort of read error. The default operation of the 3wareRAID controller is to abort a rebuild if an error is encountered. If it is desiredto continue on error, you can set the Continue on Source Error During Rebuildpolicy for the unit on the Controller Settings page in 3DM.For more information, see “Setting Continue on Source Error DuringRebuild” on page 115.0005 Rebuild completedThe 3ware RAID controller has successfully completed a rebuild. Thecompletion of the rebuild changes the state of the unit from rebuilding to OK.The data is now redundant.0006 Incomplete unit detectedAt power-on initialization time, or during a rescan, the 3ware RAID controllerperforms a “rollcall” of all drives attached to the card. After detection of thedrives, the 3ware RAID controller then uses an internal algorithm to logicallyconnect drives that belong to the same unit. If after rollcall a member of a unitis not found, the INCOMPLETE UNIT message is sent. Examples ofincomplete units are as follows:• 3-drive or larger RAID 5 unit with two or more drives missing. This alsoapplies to RAID 5 units that are part of a RAID50 unit.• 4-drive RAID 10 unit with three drives missing.Replacing the missing or dead drive and initiating a rebuild will change thestate of the unit from an incomplete unit to OK. No rebuild is required if youreplace the missing drive before loading the driver.0007 Initialize completedThe 3ware RAID controller has completed the “synching” backgroundinitialization sequence of RAID levels 1, 10, 50, or 5. For RAID 5 and RAID50, the data on the unit is read and the resultant parity is written to the parityarea on the unit. For RAID 1 and 10, one half of the mirror is copied to theother half (mirrors are synchronized).For information on the differences between foreground and backgroundinitialization, see “About Initialization” on page 1480008 Unclean shutdown detectedThe 3ware RAID controller has the ability to detect if the system has beenshutdown via the standard shutdown mechanism of the operating system
