Disk State DescriptionArticle Number:000180447 Version:1 Key Information Audience: Level 30 = Customers Article Type: How To Last Published: Wed Feb 05 18:48:56 GMT 2014 Validation Status: Final Approved Summary: Description of the various states a disk drive on a Data Domain system can be in and the significance of the state. Article Content Notes:  Disk State Description PURPOSE This article list steps on how to identify what state a disk is reporting and the corresponding action to take. Disk reports as "Absent" Disk reports as "Failed" Disk reports as "Foreign" Disk reports as "Unknown" Disk reports as "In Use" Disk reports as "Spare" Disk reports as "Known" APPLIES TO All Data Domain Systems All Software Releases SOLUTION 1. Identify the disk state 180419. STATE DESCRIPTION ACTION In Use This is the normal state of a drive that is part of the active data array. This status indicates a No action required. properly working disk. Spare The normal state for a Data Domain disk that No action required. is available as a hot standby for the active raid set. This may also be seen in front of a disk (For more information, see the that is reconstructing via the disk show article: Spare Disks 180722) raid-info command. Available Additional information This disk is available for allocation to Active regarding Active and Archive or Archive storage*. This is only applicable to storage is available on Page 62 DD OS 5.0 and later. of the DD OS 5.0 Administration guide (KB ID *System storage must be moved from the 76196) Available Storage area to the Active Tier storage area before the file system can be Instructions for adding storage created. to the Active or Archive tier is available on page 67 of the DD Storage may also be moved from Active to OS 5.0 Administration guide Available to keep in reserve. (KB ID 76196) This disk state may be caused by a newly Unknown introduced disk. Foreign This is disk is not reporting the proper identification information in the raid group. Resolving Disk Unknown 181664 Resolving Foreign Disks 181669 Disk Drive in failed State 181772 Failed Absent Known A disk state caused by a hardware error has been taken offline by the system; moreover, the reconstruction process has begun on an available spare. An indication that the disk is disconnected from the bus and is not accessible (this condition is the same as if a drive was pulled out of the system). The disk cannot be "failed" or "unfailed" when reporting this state. The drive is part of the RAID list; however, the Data Domain system cannot access the drive. REFERENCE Troubleshooting Disk Replacement Issues 180451 Resolving Disk in “absent” State 181473 A failed disk state alert automatically generates a support case. If a new case notification has not been received, please Create a service request. Resolving Disk in absent State 181473 Resolving Disk in Known State 181668 Restorer Operating System User Guide Troubleshooting Adding a Disk [Link Error:UrlName "1946-Troubleshooting-Adding-a-Disk" not found] How to Unfail a Disk 181407 Resolving Foreign Disks 181669 Resolving Disk in Known State 181668 Notes (Employees and Partners):  Disk State Description PURPOSE This article list steps on how to identify what state a disk is reporting and the corresponding action to take. Disk reports as "Absent" Disk reports as "Failed" Disk reports as "Foreign" Disk reports as "Unknown" Disk reports as "In Use" Disk reports as "Spare" Disk reports as "Known" APPLIES TO All Data Domain Systems All Software Releases SOLUTION Data Domain Support Personnel: Note that this document is a Resolution Path. As such, while it is appropriate to link it to a case, it should not be marked as resolving a case. Instead, the document whose content actually solved the case should be linked and marked as resolved. In this case, the appropriate document would be one of the links below. It is important for statistical analysis and problem trending that the actual solution KB is the one marked as resolved. 1. Identify the disk state 180419. STATE DESCRIPTION ACTION In Use This is the normal state of a drive that is part of the active data array. This status indicates a No action required. properly working disk. The normal state for a Data Domain disk that No action required. is available as a hot standby for the active raid Spare (For more information, see the article: Spare Disks 180722) set. This may also be seen in front of a disk that is reconstructing via the disk show raid-info command. Available Additional information This disk is available for allocation to Active regarding Active and Archive or Archive storage*. This is only applicable to storage is available on Page 62 DD OS 5.0 and later. of the DD OS 5.0 Administration guide (KB ID *System storage must be moved from the 76196) Available Storage area to the Active Tier storage area before the file system can be Instructions for adding storage created. to the Active or Archive tier is available on page 67 of the DD Storage may also be moved from Active to OS 5.0 Administration guide Available to keep in reserve. (KB ID 76196) This disk state may be caused by a newly Unknown introduced disk. Foreign This is disk is not reporting the proper identification information in the raid group. Resolving Disk Unknown 181664 Resolving Foreign Disks 181669 Disk Drive in failed State 181772 Failed Absent Known A disk state caused by a hardware error has been taken offline by the system; moreover, the reconstruction process has begun on an available spare. An indication that the disk is disconnected from the bus and is not accessible (this condition is the same as if a drive was pulled out of the system). The disk cannot be "failed" or "unfailed" when reporting this state. The drive is part of the RAID list; however, the Data Domain system cannot access the drive. A failed disk state alert automatically generates a support case. If a new case notification has not been received, please Create a service request. Resolving Disk in absent State 181473 Resolving Disk in Known State 181668 REFERENCE Troubleshooting Disk Replacement Issues 180451 Resolving Disk in “absent” State 181473 Restorer Operating System User Guide Troubleshooting Adding a Disk [Link Error:UrlName "1946-Troubleshooting-Adding-a-Disk" not found] How to Unfail a Disk 181407 Resolving Foreign Disks 181669 Resolving Disk in Known State 181668 Article Metadata Product: Data Domain, DD410 Appliance, DD430 Appliance, DD460 Appliance, DD560 Appliance, DD510 Appliance, DD530 Appliance, DD565 Appliance, DD580 Appliance, DD120 Appliance, Expansion Shelf ES20, DD690 Appliance, DD660 Appliance, DD880 Appliance, DD140 Appliance, DD610 Appliance, DD630 Appliance, DD670 Appliance, DD860 Appliance, DD890 Appliance External Source: Data Domain Primus/Webtop solution ID: dd1004 Domain Articles: Resolution Path Domain: Hardware Component: Disk Life Cycle: GA