SAN LUNs Overview Page

Navigation: SAN > Storage > LUNs

Displays various properties of the logical volumes that are configured on the Oracle FS System. Actions on this page allow you to manage those volumes as well as to create an immediate Clone LUN.
Name

Identifies the name that is assigned to the LUN.

Status

Identifies the status of each LUN.

Valid states:
Online

Indicates that the volume is fully accessible.

Offline

Indicates that the volume is not accessible.

Conservative

Indicates that the write‑back cache of the volume is disabled, which reduces system performance. A Conservative state might indicate a hardware problem.

Prepared

Indicates that the storage resources for the volume are reserved for the clone, but the clone is not committed to the storage device.

Read Only

Indicates that the volume is in write protect mode and is set to read‑only.

Unknown

Indicates that not enough information is obtained from the volume to report its status.

Background Activity

Indicates the LUN creation and deletion status.

Valid states:
  • Idle

  • In‑Progress

Tier Reallocation

Identifies the tier reallocation status of the Storage Domain. When tier reallocation is enabled, the Oracle FS System dedicates resources and uses statistical data and QoS priority property to migrate data from one storage tier to another.

Valid states:
Enabled

Indicates that tier reallocation is active on the logical volume.

Disabled

Indicates that tier reallocation is not active on the logical volume.

Storage Domain Disabled

Indicates that tier reallocation is disabled on the Storage Domain and therefore disabled on the LUN.

Host Access

Identifies the SAN host mapping status associated with the LUN.

Valid states:
Mapped

Indicates that the LUN is mapped to one or more SAN hosts.

No Mappings

Indicates that the LUN is not mapped to a SAN host.

Inactive

Indicates that the data path of the LUN is disabled, which makes the LUN inaccessible on the network.

All

Indicates that the LUN is accessible by all of the hosts on the network.

Protocol Access

Identifies the access protocol used to map the LUN to the Controller.

Protocols include:
  • FC only

  • iSCSI only

  • No Access

  • All

Groups
Displays the volume group or storage domain to which the logical volumes belong.
Volume Group

Lists the name of the volume group where the logical volume is located.

Storage Domain

Specifies the name of the Storage Domain.

Logical Capacity (GB)
Displays the storage requirements for the logical volumes.
Allocated

Identifies the total amount of storage capacity that is reserved for this volume.

Addressable

Identifies the capacity limit to which the volume can grow.

Logical Distribution

Displays a graphical comparison of the allocated capacity that this volume uses to the allocated capacity that is unused.

QoS

Displays the RAID and priority levels.

RAID Level
Identifies the storage mechanism that is used to enhance the ability of the system to recover data from the loss of one or more drives. Possible RAID levels:
Single Parity

Indicates that, in addition to the actual data, one set of parity bits exists for the logical volume. This parity level protects against the loss of one drive. Single parity is implemented as a variant of the RAID 5 storage technology.

Double Parity

Indicates that, in addition to the actual data, two sets of parity bits exist for the logical volume. This parity level protects against the loss of one or two drives with a slight cost to write performance. Double parity is implemented as a variant of the RAID 6 storage technology.

Mirrored

Indicates that no parity bits exist for the volume. Instead, the system writes the data in two different locations. This RAID level protects against the loss of at least one drive and possibly more drives with an improvement of the performance of random write operations. Mirrored RAID is implemented as a variant of the RAID 10 storage technology.

Priority Level
Identifies the priority that the system gives to various operational aspects of a logical volume. These operational aspects include the Controller processing queue, the SAN interface requests, and the migration of the auto-tiered LUN extents.
Note: The processing-queue priority defines the percentage of the Controller CPU cycles that are dedicated to the volume.
Valid priority levels:
Premium

Indicates the highest priority for responding to requests in the processing queue. For auto-tiered LUNs, busy LUN extents receive the highest priority when the system migrates the data to the higher-performing storage tiers.

High

Indicates the next highest priority for responding to requests in the processing queue. For auto-tiered LUNs, busy LUN extents receive the next highest priority when the system migrates the data to the higher-performing storage tiers.

Medium

Indicates an intermediate priority for responding to requests in the processing queue. For auto-tiered LUNs, busy LUN extents receive an intermediate priority when the system migrates the data to the higher-performing storage tiers.

Low

Indicates the next to lowest priority for responding to requests in the processing queue. For auto-tiered LUNs, busy LUN extents receive the next to lowest priority when the system migrates the data to the higher-performing storage tiers.

Archive

Indicates the lowest priority for responding to requests in the processing queue. For auto-tiered LUNs, busy LUN extents receive the lowest priority when the system migrates the data to the higher-performing storage tiers.

Clone Capacity (GB)
Displays the physical storage usage for the Clone LUNs.
Logical Maximum

Identifies the amount of storage that was requested for the clone repository.

Physical Used

Identifies the amount of clone capacity that is allocated to the volume for clone data. The amount of capacity includes the overhead that is needed to create the logical volume. The overhead is parity for data protection.

Physical Allocated

Identifies the total amount of clone capacity that the system reserved for the logical volume. The amount of capacity includes the overhead that is needed to create the logical volume.

Physical Maximum

Identifies the maximum clone capacity allowed. For clones. This field identifies how much space is available for clone data.

Total Physical Capacity (GB)
Displays the total physical storage capacity for the logical volumes and Clone LUNs.
LUN Overhead

Identifies the physical and logical storage capacity that is required to meet the LUN Quality of Service (QoS) settings.

Allocated

Specifies the amount of raw capacity in gigabytes (GB) that the system has assigned and designated to this logical volume.

Maximum

Identifies the sum of the addressable capacity for the logical volume and its clone repository.

Physical Distribution

Displays a graphical comparison of the capacity that is used to the maximum capacity that is allocated.

Global LUN Number

Identifies the globally unique identifier of the LUN.

LUID

Identifies the unique identifier of the LUN.