Define the Quality of Service (QoS) attributes to allocate the storage resources that are necessary to create the auto‑tiered LUN.
- Navigate to .
- Select .
- Click Auto Tier.
- (Optional) From the Storage Domain list, select the Storage Domain that you want to assign to the LUN.
If necessary, click the browse button,
[…] to display a list of available Storage Domains.
Note: The Storage Domain list displays only when administrator-defined Storage Domains exist. If no administrator-defined Storage Domains exist or you do not assign the LUN to a specific Storage Domain, then the system assigns the LUN to the default Storage Domain.
- Enter a name in the LUN Name field.
- (Optional) From the Volume Group list, select the volume group that you want the LUN to belong.
Note: If necessary, click the browse button, […] to create a volume group.
- To use the QoS properties of an existing Storage Profile, select the Use Storage Profile field, and then select the desired profile from the list.
Result:Selecting a Storage Profile sets the remaining QoS property fields to read‑only and displays the Advanced QoS settings that are associated with the Storage Profile.
- Select the Initial Storage Class where you want to store the LUN.
Possible classes:
Capacity Disk
Capacity SSD
Performance Disk
Performance SSD
- (Optional) Select the Basic link.
Result:The indirect
QoS properties display. Available selections:
Initial Typical Access
Initial I/O Bias
Initial Redundancy
- (Optional) From the Initial Typical Access list, select the common access method for this LUN.
Available access methods:
- (Optional) From the Initial I/O Bias list, select the typical read‑write ratio for this LUN.
- (Optional) Select the Advanced link.
Result:The direct
QoS properties display. Available selections:
Initial RAID Level
Initial Read Ahead
Important! Selecting Advanced QoS properties clears the Basic QoS selections.
- (Optional) From the Initial RAID Level list, select the RAID level to associate with this LUN.
Possible RAID levels:
Single Parity
Double Parity
Mirrored
- (Optional) From the Initial Read Ahead list, select the read‑ahead polity to apply to this LUN.
Valid policies:
Normal
Aggressive
Conservative
- (Optional) From the Priority Level field, select the desired option for the LUN.
Valid choices:
Premium
High
Medium
Low
Archive
- (Optional) From the Migration/Copy Priority list, select the priority to define how the system performs background copies.
Valid choices:
System Chooses
Minimize Impact
Maximize Speed
- (Optional) Click the Additional Options button.
Result:The Additional Options dialog appears.
- (Optional) From the Additional Options dialog, select the desired Storage Classes that you want the auto‑tier LUN to use.
- (Optional) To enable auto‑tiering, select the Tier Reallocation Enabled check box.
- Click Close.
- In the Allocated and Addressable fields, specify the logical capacities for this volume.
Note: Use the storage capacity usage graphs to determine the impact on the storage requirements for the LUN.
- To create the LUN now, click OK.
Clicking
OK creates the
LUN using the default settings on the remaining tabs. You can perform the tasks associated with the other tabs to fine‑tune the remaining
LUN properties. The default properties include:
The LUN is assigned to the default Volume Group and the default Storage Domain.
The LUN is mapped to the same host entry as the most recent LUN mapping.
The system does not create repository capacity for Clone LUNs.
The system does not create schedules for automatic Clone LUNs.