Virtual Disk Status

Virtual disk status is provided to display the general overall status of a virtual disk and the data status of the storage source.

Virtual disk status indicates the condition of the virtual disk after the last detected event. If nothing changes the status, such as a failed write I/O, the status will not be updated until it is detected by the software.

Virtual Disk Status (general overall status)

The virtual disk status reflects the general overall status of the virtual disk. This is the health, availability, and recovery status of the virtual disk.

For virtual disks with replications, replication status (when not healthy) and any applicable transfer time lag amounts are also displayed with virtual disk status. (Not applicable when in Advanced View in which complete replication status is displayed in the Replication Status column.)

Virtual disk status is displayed:

o Under the icon at the top of the Virtual Disk Details page

o In the Status column of the Virtual Disks List

o In the Status column of Virtual Disk tabs that appear in various detail pages

o During a mirror recovery, the progress bar in the Status column indicates the percentage of completion and an estimation of time to completion.

Data Status (presented per storage source)

The data status of a multi-copy virtual disk is displayed for each storage source that comprises the virtual disk. Data status is the high availability status and reflects the comparison between the copies of data on each server and the recovery (if any) needed to synchronize the data.

The data status can be used to determine which servers contains storage sources that are up-to-date when the virtual disk is pending mirror recovery, in recovery, or redundancy is compromised.

The data status is displayed:

o In the Virtual Disk Details page>Info tab in the Data status field.

o In the Virtual Disk Summary of the Virtual Disks List when an individual virtual disk is selected; see the Data status field.

Statuses	Description
Degraded capability	The inactive storage source in a 3-copy virtual disk has failed or is not available, which reduces the advanced redundancy level of the virtual disk, but mirroring of data is still occurring between the two storage sources with active paths to the host. During this time, the inactive storage source cannot be used to restore redundancy in the event that an active storage source fails. (An inactive storage source, by nature, is disabled and access to the host is not allowed until it is promoted to active status.) This status is only applicable for 3-copy virtual disks.
Double failure	Failures have occurred on two servers and all virtual disk storage sources are inaccessible to the host. The source of the failures should be determined and corrected. Action may have to be taken to force the virtual disk online. Before taking any action, see Forcing Online Mirrored Virtual Disks in this topic for important information.
Dual full recovery pending	Data on one server with active paths to the host is not up-to-date and a full recovery is in process. During I/O operations to the other server with active paths to the host, an event occurred which caused the data on that server to also require a full recovery which will begin after the first recovery completes. The mirror path is available and the recovery will begin momentarily. This is a case where full recoveries need to be done on both servers with active paths to the host in order to synchronize all data copies for the virtual disk.
Dual log recovery pending	Data on one server with active paths to the host is not up-to-date and a log recovery is in process. I/O operations from the host are being logged to the other server with active paths to the host, which must also be recovered after the first log recovery completes. The mirror path is available and the log recovery will begin momentarily. This is a case where log recoveries need to be done on both servers with active paths to the host in order to synchronize all data copies for the virtual disk. For example, while I/O is running on Server1, Server2 loses access to a local disk leading to what is commonly referred to as "local down" on Server2 and "mirror down" on Server1. Two recoveries are needed in order to make the virtual disk healthy and data up-to-date on all servers.
Failed	Storage sources on two servers have failed and all virtual disk storage sources are inaccessible to the host. The source of the failures should be determined and corrected. When the server with the latest data changes becomes available, recovery will begin and access will be restored.
Full recovery needed	Data on one server with active paths to the host is not up-to-date and has to be recovered from the other server with active paths to the host using a full recovery. This is a temporary status until a mirror path is available so that synchronization can begin.
Full recovery paused	The full recovery has been manually paused and will remain paused until it is manually resumed.
Full recovery pending	Data on one server with active paths to the host is not up-to-date and has to be recovered from the other server with active paths to the host using a full recovery. The mirror path is available and the recovery will begin momentarily.
Healthy	Virtual disk is online and operating normally.
In Full Recovery	The data on one server is currently in full recovery.
In Log Recovery	The data on one server is currently in log recovery.
Log recovery needed	The data on one server with active paths to the host is not up-to-date and has to be recovered from the other server with active paths to the host using a log recovery. This is a temporary status until a mirror path is available so that synchronization can begin.
Log recovery paused	The log recovery has been manually paused and will remain paused until it is manually resumed.
Log recovery pending	The data on one server with active paths to the host is not up-to-date and has to be recovered from the other server with active paths to the host using a log recovery. The mirror path is available and the recovery will begin momentarily.
Off-line	Virtual disk is offline and unavailable to the host. This could be because a server is stopped.
Path down	One or more paths are down,but all storage sources are up-to-date. Check Paths tab to determine which path is down and then check the associated server and connections.
Reduced availability	A failure on one server with active paths to the host is detected and the host is inaccessible from that server. The host is still accessible from the other server with active paths to the host. All storage sources are up-to-date. Redundancy can be restored automatically or manually, see Dynamic Data Resiliency.
Unknown	Information is unknown because the server is stopped, down, or unreachable, or the servers cannot communicate and the status from the other server is undefined. Ensure servers are started and verify network connectivity. . Under certain circumstances that cannot be resolved, action may have to be taken to force a mirrored virtual disk online in order to start mirror recovery. Before taking any action, see Forcing Online Mirrored Virtual Disks in this topic for important information.
Up-to-date	Data on the server is available and current.