Volume status descriptions
In Disk Management, one of the following volume status descriptions will always appear in the graphical view of the volume and in the Status column of the volume in list view.
The Failed status occurs when a basic or dynamic volume cannot be started automatically, the disk is damaged, or the file system is corrupt. This status also occurs after importing a volume with Data Incomplete status. An error icon appears on the failed volume. Unless the disk or file system can be repaired, the Failed status indicates data loss.
If the volume is a basic volume, make sure that the underlying physical disk is turned on, plugged in, and attached to the computer. No other user action is possible for basic volumes.
If the volume is a dynamic volume, make sure the underlying dynamic disks are online. If the disks are not online, you should reactivate them. If this succeeds, the volume automatically restarts and returns to the Healthy status. For instructions describing how to bring a disk online, see To reactivate a missing or offline dynamic disk
If the underlying dynamic disk returns to the Online status, but the dynamic volume does not return to the Healthy status, you can reactivate the volume manually. For instructions describing how to reactivate a volume, see To reactivate a dynamic volume
If the volume is a mirrored or RAID-5 volume with old data, bringing the underlying disk online automatically reactivates the volume. If the disks that contain current data are disconnected, you should bring those disks online first (to allow the data to become synchronized). Otherwise, reactivate the mirrored or RAID-5 volume manually, and then run Chkdsk.exe.
For instructions describing how to reactivate a volume, see To reactivate a dynamic volume To run Chkdsk.exe, click Start, click Run, type chkdsk, and then click OK.
For instructions describing how to fix volumes with Failed status, see Troubleshooting
The Failed Redundancy status occurs when the data on a mirrored or RAID-5 volume is no longer fault tolerant because one of the underlying disks is not online. A warning icon appears on the volume with failed redundancy.
Volumes with the Failed Redundancy status often display an associated substatus (in parentheses). A volume may only display one substatus at a time. The substatus is displayed according to the order in which they appear in the table below. For example, if you have only one volume that serves as the boot volume, system volume, active volume, page file, and crash dump, its status is displayed as Failed Redundancy (System). However, if an error occurs on a mirrored or RAID-5 volume, the (At Risk) substatus takes precedence.
You can continue to access the volume using the remaining online disks, but if another disk that contains the volume fails, you will lose the volume and its data. To avoid such loss, you should attempt to repair the volume as soon as possible:
For more information about how to fix mirrored or RAID-5 volumes with Failed Redundancy status, see Troubleshooting
The Formatting status is a temporary status that occurs only while a volume is being formatted with a file system. As the volume is being formatted, the amount of the volume formatted is shown as a percentage. When formatting is complete, the volume status changes to Healthy.
The Healthy status is the normal volume status on both basic and dynamic volumes when the volume is accessible and has no known problems. No user action is required.
Volumes with the Healthy status often display an associated substatus (in parentheses). A volume can display only one substatus at a time. The substatus is displayed according to the order in which they appear in the table below. For example, if you have only one volume which serves as the boot volume, system volume, active volume, page file, and crash dump, its status is displayed as Healthy (System). However, if an error occurs on a dynamic volume, the (At Risk) substatus takes precedence.
The Regenerating status occurs when adding a mirror, importing a mirrored volume, when a missing disk is reactivated, and when data and parity are being regenerated for a RAID-5 volume. No user action is required. When regeneration is complete, the volume's status returns to Healthy. You can access a RAID-5 volume while data and parity regeneration is in progress.
The Resynching status occurs when creating a mirror or restarting a computer with a mirrored or RAID-5 volume, or when a mirrored volume is being resynchronized so that both mirrors contain identical data. No user action is required. When resynchronization is complete, the mirrored volume's status returns to Healthy. Resynchronization might take some time, depending on the size of the mirrored volume. Although you can access a mirrored volume while resynchronization is in progress, you should avoid making configuration changes (such as breaking a mirror) during resynchronization.
Volumes with the Resynching status often display an associated substatus (in parentheses). The table below lists the possible substatuses displayed by volumes with Resynching status:
The Unknown status occurs when the boot sector for the volume is corrupted (possibly due to a virus) and you can no longer access data on the volume. The Unknown status also occurs when you install a new disk but do not follow the wizard to create a disk signature.
For instructions describing how to fix volumes with Unknown status, see Troubleshooting
When importing disks, all volumes on those disks display the OK condition in the Foreign Disk Volumes dialog box unless there are problems with the volumes. When importing mirrored or RAID-5 volumes, these problems might be Data Incomplete, Data Not Redundant, or Stale Data.
The Data Incomplete status is displayed in the Foreign Disk Volumes dialog box, and occurs when data spans multiple disks, but not all of the disks were moved. Data on this volume will be destroyed unless you move the remaining disks that contain this volume, and then import all of the disks together. You cannot import the missing disks at a later time to restore the data.
For instructions describing how to fix volumes with Data Incomplete status, see Troubleshooting
Data Not Redundant
The Data Not Redundant status is displayed in the Foreign Disk Volumes dialog box when you import all but one of the disks in a mirrored or RAID-5 volume. In Disk Management, the imported half of the mirrored volume receives Failed Redundancy status, while the disk that holds the half of the mirror that was not imported receives Missing status. RAID-5 volumes receive Failed Redundancy status.
To prevent the Data Not Redundant status from occurring, connect all disks that belong to the mirrored or RAID-5 volume to the computer at the same time, and then import all of the disks together. For mirrored volumes, you can import the Missing disk at a later time to restore redundancy.
For instructions describing how to fix volumes with Data Not Redundant status, see Troubleshooting
The Stale Data status is displayed in the Foreign Disk Volumes dialog box, and occurs when a mirrored or RAID-5 volume has stale mirror information, stale parity information, or I/O errors.
For instructions describing how to fix mirrored or RAID-5 volumes with Stale Data status, see Troubleshooting