Disk or Cloud Devices

View status and configuration information for disk-based or object storage devices.

The table shows the storage devices that are defined to the servers that are managed by the Operations Center.

When a storage device is defined to IBM Spectrum Protect, it is associated with a device class. The device class identifies the device type and its media management settings.

The following status indicators are shown on the page:

All Devices Alerts

Shows the number of active and inactive alerts for disk, tape, and cloud devices. Some of the alerts might apply only to tape devices and not to disk devices, or only to cloud object storage, not to tape devices.

Status

The status summary reflects the most severe error state that was reported for the device class.

Warning and error states are triggered when defined threshold values are exceeded. These two states apply only to DISK device classes, or directories, for FILE device classes. Examples of state thresholds include the percentage of the disk volumes that are unavailable, or the percentage scratch volumes that the server cannot allocate. You can display the current threshold settings for a server by using the QUERY STATUSTHRESHOLD command. To modify the threshold settings, use the UPDATE STATUSTHRESHOLD command.

The following states can be shown:

• Normal: All storage assets are online and volumes have a read/write access state. There is enough directory space available to allocate at least 75% of the potential scratch volumes.
• Warning: The conditions that result in a warning state depend on the device class. The following conditions result in a warning state:
  • For a DISK device class, at least 25% of its volumes are offline or have a read-only access state.

  • For a FILE device class that is not shared, fewer than 75% of the potential scratch volumes can be allocated based on the available directory space. The available directory space is determined by multiplying the maximum capacity setting of the device class by the maximum number of scratch volumes for all the storage pools that use the device class. If no storage pools use the device class, the maximum capacity is multiplied by the mount limit setting of the device class.

  • For a shared FILE device class, one or more of the following conditions exists:
    • At least 25% of the paths or drives are offline.
    • At least 25% of the drives are in a polling state.
• Critical: The conditions that result in an error state depend on the device class. The following conditions result in an error state:
  • For a DISK device class, at least 50% of its volumes are offline or have a read-only access state.
  • For a FILE device class that is not shared, one of the following conditions exists:
    • If the device class uses preallocated volumes, at least one directory is unavailable.
    • If volumes are not preallocated, fewer than 50% of the potential scratch volumes can be allocated based on the available directory space. The available directory space is determined by multiplying the maximum capacity setting of the device class by the maximum number of scratch volumes for all the storage pools that use the device class. If no storage pools use the device class, the maximum capacity is multiplied by the mount limit setting of the device class.
  • For a shared FILE device class, one or more of the following conditions exists:
    • At least 50% of the paths or drives are offline.
    • At least 50% of the drives are in a polling state.

Tips:

• To change the status thresholds, use the following parameters of the UPDATE STATUSTHRESHOLD commands:
  • DEVCLASSPCTDRVOFFLINE
  • DEVCLASSPCTDRVPOLLING
  • DEVCLASSPCTLIBPATHSOFFLINE
  • DEVCLASSPCTPATHSOFFLINE
  • DEVCLASSPCTDISKSNOTRW
  • DEVCLASSPCTDISKSUNAVAILABLE
  • FILEDEVCLASSPCTSCRUNALLOCATABLE
• To change the access state of a volume, use the UPDATE VOLUME command.
• To change the state of paths, libraries, and drives, use the UPDATE PATH, UPDATE LIBRARY, and UPDATE DRIVE commands.
• To identify drive errors, use the QUERY DRIVE command.
• To change the availability state of a disk volume, use the VARY command.

Disk Storage

Shows the availability state of volumes, for DISK device classes, or directories, for FILE device classes.

A disk volume can be automatically taken offline if IBM Spectrum Protect encounters a problem with it. You can also take disk volumes offline during maintenance or repair operations.

To change the availability state of a disk volume, use the VARY command.

A status of Inaccessible indicates that a volume is offline or has a read-only access state.

A status of Constrained indicates that a directory does not have enough free space to create more scratch volumes.

Tip: In some cases, a warning or critical status is shown for an unshared FILE device class, even if it is not constrained. This status occurs when the device class directories have enough free space to allocate some scratch volumes, but not enough to fully satisfy the mount limit setting.

You can use the QUERY DEVCLASS command to identify the directories that are at risk of running out of scratch volumes.

Library Status

This column applies only to a shared FILE device class. The following states can be shown:

• Normal: The library is online.
• Critical: The library is offline.

To view alerts that might explain the problem, click All Device Alerts.

Drives

This column applies only to a shared FILE device class. A drive can be automatically taken offline if IBM Spectrum Protect encounters a problem with it. You can also take drives offline during maintenance or repair operations.

To change the state of a drive, use the UPDATE DRIVE command.

Paths

This column applies only to a shared FILE device class. A path connects a storage device to the IBM Spectrum Protect server or to another data mover (for example, a network-attached storage (NAS) file server).

To change the state of a path, use the UPDATE PATH command.

For more information about managing storage devices or about using IBM Spectrum Protect commands, see the IBM Spectrum Protect documentation.