Modify Storage Domain Dialog

Navigation: System > Storage Domains > Actions > Modify Storage Domain

Modifies the properties of the selected Storage Domain.

Storage Domain Capacity by Storage Class

Displays graphically the storage classes, and their capacities, for the selected Storage Domain.

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.

For each storage class, the system graphically displays the Storage Domain physical capacities. The graph uses colored bars of different thicknesses to indicate the capacity status of each storage class. Hover the mouse pointer over each graph to display the capacity type.

Note: Drive manufacturers often report drive capacities in decimal units (powers of 10). An Oracle FS System reports the capacity of physical storage and the size of logical volumes in binary units (powers of two):

1 MB = 1024² (1,048,576) bytes
1 GB = 1024³ (1,073,741,824) bytes
1 TB = 1024⁴ (1,099,511,627,776) bytes

Possible physical storage capacities:

Free Space: Displays the amount of capacity that is available for allocation in the indicated Storage Class.
Used Capacity: Displays the amount of capacity that is consumed by data and system overhead.
Total Capacity: Displays the total amount of raw capacity provided by the drive groups that are defined within the indicated Storage Class.
Allocated Space: Displays the amount of capacity that has been assigned and designated to all storage classes residing on the indicated Storage Class.
Preparing Capacity: Displays the amount of capacity that is being initialized. This value typically results from a volume having been deleted. This value decreases over time while the value for free space correspondingly increases for the indicated Storage Class.
Allocated to Logical Maximum: Displays the maximum capacity to which the Storage Class can grow.

Name

Specifies the name of this Storage Domain. This name must be unique within the Oracle FS System.

Storage Domain names can consist of up to 82 UTF-8 printable characters. The name cannot include the following characters:

/ (forward slash)
\ (backward slash)
. (dot)
.. (dot dot)
tab

Background Process Priority

System Chooses: (Default) Specifies that the system balances the resources that are needed for background data movement with the resources that are needed to service the incoming client I/⁠O.
Minimize Impact: Specifies that the system restricts the amount of system resources that are given to the background data movement operation. This option minimizes the impact on client I/⁠O. Recommended for highly‑loaded Storage Domains.
Maximize Speed: Specifies that the system grants resource priority to the background data movement operation. This option reduces the amount of system resources that are available for client I/⁠O. Recommended for lightly‑loaded Storage Domains.

Enable Tier Reallocation

Specifies that any tiered data that resides in this Storage Domain has data progression enabled. Individual objects might have tier reallocation disabled. Enabling tier reallocation at the Storage Domain level does not override any objects that have tier reallocation disabled. The default value is enabled.

Enable Tier Reallocation Statistics Collection

Collects data usage patterns for the Storage Domain internally to analyze and determine the optimum storage classes for the data. The default value is enabled. It is recommended you do not change this setting unless you need to test different profiles.

Disable this setting if you are modifying your storage profile for testing purposes and did not want to collect statistics during the test. You do not want to collect tier reallocation statistics during the test as this might distort future tier reallocation. After you complete testing, enable tier reallocation statistics collection.

Note: Enabling or disabling the tier reallocation statistics collection has no effect on statistics you can view for CPU, drive groups, Filesystems, or LUNs. (Those are a different set of statistics.)

Auto‑Tier Scan Options (Advanced)

Optimizes the auto‑tier algorithm for moving data to different Storage Classes. You can specify the interval for when auto‑tier moves frequently accessed data blocks and infrequently accessed data blocks to match your application activity.

Note: To unlock the auto‑tier scan options, select the lock icon. Selecting the lock icon again resets the values to the state when the fields were unlocked.

Performance-Optimizing Scan Cycle

Specifies the frequency, in hours, that auto‑tier scans to move frequently accessed data blocks to a high performance Storage Class.

For example, a value of 32 means that every 32 hours auto‑tier scans the system to move frequently accessed data blocks to a high performance Storage Class.

Updates to this field affect the label of the Number of n‑hour Scan Cycles field. For example, a value of 32 changes the label for the Number of n‑hour Scan Cycles to Number of 32‑hour Scan Cycles.

Enter a value from 1 through 168.

Number of n‑hour Scan Cycles

Specifies the frequency that auto‑tier runs the performance‑optimizing scan cycles before auto‑tier runs the cost-optimizing scan cycle. The value entered in the Number of n‑hour Scan Cycles field is multiplied by the value entered in the Performance-Optimizing Scan Cycle field to obtain the value set in the Cost-Optimizing Scan Cycle field.

For example, a value of 5 means that every fifth time that auto‑tier runs the performance-optimizing scan cycle, auto‑tier then runs the cost-optimizing scan cycle to move infrequently accessed data to a less expensive storage class.

Enter a value from 2 through 31.

Cost-Optimizing Scan Cycle

(Read‑only) Displays the frequency, in hours, that auto‑tier scans to move infrequently accessed data blocks to a less expensive Storage Class.

The value displayed in this field is calculated as the product of the value you entered in the Performance-Optimizing Scan Cycle field and the value you entered in the Number of n-hour Scan Cycles field.

For example, to set auto‑tier to move infrequently accessed data blocks to a less expensive Storage Class every 200 hours, enter the following values:

Performance Optimizing Scan Cycle: 25
Number of 25‑hour Scan Cycles: 8

The system displays 200 in the Cost-Optimizing Scan Cycle field. In this example, the values that you enter instruct auto‑tier to run the performance‑optimizing scan every 25 hours. Then, during every eighth scan cycle (or every 200 hours), auto-tier runs a cost-optimizing scan to move infrequently accessed data blocks to a less expensive Storage Class.

Allowable Storage Capacity for Auto‑Tiered LUNs

Indicates the maximum percentage of storage capacity to dedicate to auto-tier reallocation for each Storage Class of the Storage Domain. Enter a percentage for each available Storage Class.

The default value is 100%.