Virtual Disk Properties

The virtual disk properties can vary depending on the model of the controller.

Table 1. Virtual Disk Properties
Property Definition
Status These icons represent the severity or health of the storage component.
  • NormalNormal/OK
  • WarningWarning/Non-critical
  • CriticalCritical/Failure/Error
For more information, see Storage Component Severity.
Name It displays the virtual disk name. For all the disks which are not part of the virtual disk displays as non-RAID disks for systems running on Enhanced HBA mode. Hot-plugged in disks comes up as non-RAID disks.
NOTE: On PERC 12 and later controllers, the default virtual disk name is displayed in the format VirtualDisk<nnnn>, where nnnn can range from 1 to 9999.
State It displays the status of the virtual disk. Possible values are:
  • Ready — The virtual disk is functioning normally.
  • Degraded — A physical disk in a redundant virtual disk is not online.
  • Resynching — A consistency check is being performed on the virtual disk. Performing a Cancelling a Check Consistency on a virtual disk while it is in Resynching state causes the virtual disk to be in a Failed Redundancy state.
  • Resynching Paused — A consistency check has been paused on the virtual disk.
  • Regenerating — A physical disk in the virtual disk is rebuilding.
  • Reconstructing — The virtual disk configuration has changed. The physical disks included in the virtual disk are being modified to support the new configuration.
  • Failed — The virtual disk has encountered a failure of one or more components and is no longer functioning.
  • Failed Redundancy — This state is displayed when the initial consistency check for the virtual disk is canceled or is not successful. This state may also be displayed when a RAID 1, RAID 10 or RAID 1-concatenated virtual disk suffers a physical disk failure. In addition, there are other conditions related to disk failures and the firmware that can cause a virtual disk to display a Failed Redundancy state. When a virtual disk is in Failed Redundancy state, performing a Check Consistency may return the virtual disk to a Ready state.
  • Background Initialization — A background initialization is being performed on the virtual disk.
  • Formatting — The virtual disk is being formatted. For more information, see Format, Initialize, Slow, and Fast Initialize.
  • Initializing — The virtual disk is being initialized. For more information, see Format, Initialize, Slow, and Fast Initialize. On some controllers, the virtual disk state is not updated until the controller performs an I/O operation. For more information, see I/O and Reboot Requirements for Detecting Physical Disk Status Changes.
  • Degraded Redundancy — This state is applicable to RAID 6 and RAID 60 in which a physical disk in a redundant virtual disk is not online, but the virtual disk is still accessible and functioning.
Virtual Disk Bad Block It displays whether the virtual disk has bad blocks.
NOTE:  The Virtual Disk Bad Block property is not supported on PERC 12 and later controllers.
Encrypted It displays whether the virtual disk is encrypted. The possible values are Yes and No.
Hot Spare Policy Violated It displays whether the Hot Spare Protection Policy has been violated.
NOTE: This property is displayed only if you set any Hot Spare Protection Policy. For more information, see Setting Hot Spare Protection Policy.
Layout It displays the RAID level.
Size It displays the total capacity of the virtual disk. The algorithm for calculating the virtual disk size rounds a value of 0.005 or less, down to 0.00 and a value between 0.006 and 0.009, up to 0.01. For example, a virtual disk size of 819.725 is rounded down to 819.72. A virtual disk size of 819.726 is rounded up to 819.73.
Device Name It displays the operating system device name for this object.
NOTE: Device name is not displayed for a virtual drive on BOSS.
Bus Protocol It displays the technology that the physical disks included in the virtual disk are using. Possible values are:
  • SAS
  • SATA
  • PCIe
Media It displays the media type of the physical disks present in the virtual disk. The possible values are:
  • HDD
  • SSD
  • Unknown — Storage Management is unable to determine the media type of the physical disk.
NOTE: You cannot have a mix of HDD and SSD media on a virtual disk. Also, you cannot have a mix of SAS and SATA drives on the virtual disk.
Read Policy It displays the read policy that the controller is using for the selected virtual disk. See RAID Controller Read, Write, Cache, and Disk Cache Policy.
Write Policy Displays the write policy that the controller is using for the selected virtual disk. See RAID Controller Read, Write, Cache, and Disk Cache Policy.
Strip Element Size It displays the strip element size of the virtual disk.
NOTE: The Strip Element Size attribute is displayed as Not Applicable for non-RAID and RAID 1 virtual disk in software RAID controllers.
Disk Cache Policy It displays whether the disk cache policy of the physical disks that is part of the virtual disk is enabled or disabled. See RAID Controller Read, Write, Cache, and Disk Cache Policy.