Add LU QoS Group

Overview

This function adds LU QoS groups with bandwidth limit (the maximum performance limit) settings to each host LUN.

Caution

  • Use one LU QoS group number per 512 host LUNs as an internal resource. When there are LU QoS groups with a bandwidth limit other than "Unlimited" from Host LUN#512 onward, the maximum number of LU QoS groups cannot be created.

  • Host-LU QoS does not support from LUN#1024 onward. Even if volumes are mapped from LUN#1024 onward, only up to 1024 LUNs (LUN#0 - LUN#1023) can be specified for the bandwidth limit.

Note

  • Assigning an LU QoS group to a LUN group with host affinity set, the bandwidth limit can be configured for each host LUN. Refer to the [Set Host-LU QoS] function for details.

User Privileges

Availability of Executions in the Default Role

Default role Availability of executions
Monitor  
Admin
StorageAdmin
AccountAdmin  
SecurityAdmin  
Maintainer

Refer to User Roles and Policies for details on the policies and roles.

Display Contents

Target LU QoS Group

Item Description

LU QoS Group No.

The LU QoS group number (0 to 1055) is displayed.

The LU QoS group number is allocated from the smallest unused decimal number in ascending order.

Settings

LU QoS Group Setting

Configure the bandwidth limit for Host LUNs.

Item Description

Host LUN

The host LUN (0 to 1023) is displayed.

Bandwidth Limit

Select the maximum performance in IOPS (throughput value). When not setting the performance limit, select "Unlimited".

Refer to the "LUN QoS" column in "Bandwidth Limit" for the setting value and the default value.

Note

  • The bandwidth limit can be changed using the [Set LU QoS Pattern] function or the "set qos-bandwidth-limit" CLI command. If the value is changed, that value is displayed as an option for this item.

Operating Procedures

  1. Click [Add LU QoS Group] in [Action].

  2. Select a host LUN bandwidth limit, and click the [Add] button.

    → A confirmation screen appears.

  3. Click the [OK] button.

    → Addition of LU QoS Group starts.

  4. Click the [Done] button to return to the [LU QoS Group] screen.