View SAN LUN, Quality of Service Tab, Single Tier

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Displays the QoS properties of a selected logical volume.

Selected Storage Domain Capacity

Displays the storage capacity of the selected storage class and Storage Domain that is available for the logical volume. The graph uses colored bars of different thicknesses to indicate the capacity status of the logical volume you are creating as well as the overall system capacity.

Capacity By Storage Class

Identifies the type of physical media on which the data is stored. Valid media types (listed from the highest performance priority to the lowest performance priority):
Performance SSD

Specifies that the data is stored on solid state drives (SSDs) that are optimized for the performance of balanced read and write operations.

Capacity SSD

Specifies that the data is stored on SSDs that are optimized for the performance of capacity and for read operations. The write performance for this Storage Class is sacrificed somewhat to achieve the optimizations for read performance and for capacity.

Performance Disk

Specifies that the data is stored on high-speed hard disk drives (HDDs). This Storage Class sacrifices some capacity to reduce the access time and the latency of the read operations and of the write operations.

Capacity Disk

Specifies that the data is stored on high-capacity, rotating HDDs. This Storage Class optimizes capacity at some sacrifice of speed. For a storage system that does not include tape storage as an option, this Storage Class always provides the lowest cost for each GB of capacity.

Storage Domain

Specifies the name of the storage domain associated with the LUN.

Note: All Storage Domain options appear when the Oracle FS System contains custom Storage Domains.
View Storage Domains

Displays a dialog that lists the available Storage Domains.

LUN Name
Identifies the name that is assigned to a LUN for administrative purposes. LUN names must meet the following requirements:
  • Must be unique across the Oracle FS System

  • Must be 82 or fewer UTF characters

  • Must be 255 or fewer ASCII characters

Volume Group

Allows you to assign the LUN to a volume group.

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Opens the Manage Volume Groups dialog, which allows you to create a volume group.

Uses Storage Profile

Specifies whether the logical volume uses a custom set of QoS properties.

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Opens the View Storage Profiles dialog, which allows you to review the profile details.

Storage Class

Specifies the category of physical media on which the logical volume resides.

Valid media types:
Performance SSD

Specifies that the data is stored on solid state drives (SSDs) that are optimized for the performance of balanced read and write operations.

Capacity SSD

Specifies that the data is stored on SSDs that are optimized for the performance of capacity and for read operations. The write performance for this Storage Class is sacrificed somewhat to achieve the optimizations for read performance and for capacity.

Performance Disk

Specifies that the data is stored on high-speed hard disk drives (HDDs). This Storage Class sacrifices some capacity to reduce the access time and the latency of the read operations and of the write operations.

Capacity Disk

Specifies that the data is stored on high-capacity, rotating HDDs. This Storage Class optimizes capacity at some sacrifice of speed. For a storage system that does not include tape storage as an option, this Storage Class always provides the lowest cost for each GB of capacity.

Basic
Allows you to specify indirectly the parity level of the data and the read-ahead policy for the data. You specify those properties indirectly by selecting how the data is typically accessed and the level of data protection that is desired.
Note: After you select how the data is typically accessed and the level of redundancy for the data, the system displays the parity level and the read-ahead policy for the volume that supports your selections.
Typical Access
Identifies the most common method of data access. Valid biases:
Sequential

Indicates that the read requests and the write requests operate on the data mostly by accessing the records one after the other in a physical order.

Random

Indicates that the read requests and the write requests operate on the data mostly by accessing the records in an arbitrary order.

Mixed

Indicates that the read requests and the write requests operate on the data sometimes in sequential order and sometimes in random order.

I/O Bias
Identifies the typical read‑write ratio. Valid I/O biases:
Read

Indicates that most of the access requests are for read operations.

Write

Indicates that most of the access requests are for write operations.

Mixed

Indicates that the number of access requests are similar for read operations and for write operations.

Redundancy

Identifies the number of copies of the parity bits that the Oracle FS System creates for the volume.

Valid redundancy levels:
Single

Stores the original user data plus one set of parity bits to help in the recovery of lost data. Access to the data is preserved even after the failure of one drive. Single parity is implemented using RAID 5 technology and is the default redundancy level for the Storage Classes that specify the performance-type media.

Double

Stores the original user data plus two sets of parity bits to help in the recovery of lost data. Access to the data is preserved even after the simultaneous failure of two drives. Double parity is implemented using RAID 6 technology and is the default redundancy level for the Storage Classes that specify the capacity-type media.

Advanced
Allows you to specify directly the parity level of the data and the read-ahead policy for the data.
Important! Use of this option clears the selections, if any, that were made in the Basic option.
RAID Level

Identifies the RAID level associated with the Storage Profile.

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.

Read Ahead

Identifies the read‑ahead policy that the system uses for sequential read operations. The policy determines the amount of additional data, if any, that the system places into the Controller cache. Valid policies:

Normal

Indicates that the input requests and the output requests are accessing the data mostly in a random manner or in a mixed sequential and random manner.

Aggressive

Indicates that the input requests and the output requests are accessing the data mostly in a sequential manner and that the workload is biased toward read operations.

Conservative

Indicates that the input requests and the output requests are mostly sequential and that the workload is biased toward write operations.

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.
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.

Migration/Copy Priority
Identifies the strategy the system should use to control the impact on performance when background tasks need to copy or move data from one location in the storage pool to another.
Note: When the system is idle or lightly loaded, the background task maximizes the amount of work done regardless of the option selected.
Valid priorities:
System Chooses

Balances the background copy with the incoming client I/⁠O. This option is the default.

Minimize Impact

Restricts the amount of work performed on a loaded system. This option is intended to have a minimal impact on client I/⁠O throughput at the expense of longer copy times.

Maximum Speed

Prioritizes the background copy at the expense of client I/⁠O throughput.

Capacity

Identifies the maximum capacity to which the logical volume can grow. For a clone, this field identifies how much addressable space is available. Capacity must be greater than or equal to the allocated logical capacity.

Allocated Logical Capacity

Identifies the amount of capacity that is reserved for the logical volume. The reserve capacity must be less than or equal to the maximum capacity.

Disable Reference Tag Checking

Indicates that a portion of the internal data integrity checks is disabled for the LUN. If set, the Use as a Boot LUN option has no effect.

Use as a Boot LUN

Indicates the status returned from the LUN is modified for unwritten data blocks. Setting this option affects the host or application retry timing.

Capacity Estimates
Provides an estimate of the physical storage capacity requirements, which are based on your QoS attribute selections.
Estimated Physical Capacity
Identifies the estimated physical capacity (allocated and maximum) for this logical volume.
Estimated Clone Capacity
Identifies the estimated capacity (allocated and maximum) for clones of this logical volume.
Estimated Total Capacity
Identifies the estimated total capacity (allocated and maximum) for this logical volume.