Modify Thin Provisioning Volume Threshold

Overview

This function changes the threshold for monitoring the usage ratio of Thin Provisioning Volume (TPV). The usage ratio is the ratio of used capacity (physically allocated capacity) to the logical TPV capacity.

The targets of this function are TPVs and Deduplication/Compression Volumes.

Note

  • This function changes the threshold of a TPV that is created by using the [Create Volume] function.

  • The same threshold can be applied for multiple TPVs in a single operation.

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.

Settings

In this screen, set the TPV threshold.

Threshold Setting

Item Description Setting values

New Threshold

Set a new threshold for the TPV.

If the TPV usage ratio exceeds the threshold, a Host Sense Key Code Qualifier is notified.

1 - 100 %

80 % (Default)

Display Contents

The TPV selected in the [Volumes] screen is displayed. Confirm the TPV for which the threshold is to be set.

Target Thin Provisioning Volume

Item Description

No.

The volume number is displayed.

Name

The volume name is displayed.

Type

The volume type is displayed.

TPV (fixed)

Status

The volume status is displayed.

Refer to "Volume Status" for details.

Usage

The usage of the volume is displayed.

  • Block

    The volumes that are used for the SAN.

  • Block/Dedupe&Comp

    The volumes that have both the Deduplication and Compression functions enabled.

  • Block/Dedupe

    The volumes that have the Deduplication function enabled.

  • Block/Comp

    The volumes that have the Compression function enabled.

  • File

    The volumes that are used for the NAS.

  • System

    The system volumes. Refer to "Usage Details" in the [Volume Detail] screen ([Basic] tab) for details.

  • Veeam

    The Veeam Snapshot Volumes that have both the Deduplication and Compression functions disabled.

  • Dedupe&Comp/Veeam

    The Veeam Snapshot Volumes that have both the Deduplication and Compression functions enabled.

  • Dedupe/Veeam

    The Veeam Snapshot Volumes that have the Deduplication function enabled.

  • Comp/Veeam

    The Veeam Snapshot Volumes that have the Compression function enabled.

Capacity

The volume capacity is displayed.

Used Capacity

The used capacity (physically allocated capacity) of volume is displayed.

A "-" (hyphen) is displayed for the Deduplication/Compression Volume.

Original Data Size

The pre-compression capacity (logically allocated capacity) of the data written to a volume is displayed.

For volumes other than the Deduplication/Compression Volumes, the same value as "Used Capacity" is displayed.

If the pre-compression data capacity cannot be obtained, a "-" (hyphen) is displayed.

Used Rate

The volume utilization (0 to 100 %) is displayed.

  • For Deduplication/Compression Volumes, the ratio of the pre-compression data capacity to the volume capacity is displayed.

    Used Rate = Original Data Size ÷ Capacity

  • For other volumes, the ratio of the physically allocated capacity to the volume capacity is displayed.

    Used Rate = Used Capacity ÷ Capacity

Current Threshold

The threshold (1 to 100 %) currently set for the volume is displayed.

Operating Procedures

  1. Select the TPV for which the threshold is to be changed (multiple selections can be made) and click [Modify TPV Threshold] in [Action].

    Caution

    • [Modify TPV Threshold] cannot be clicked if NAS expanded system volumes or Data Container Volumes are selected.

  2. Specify a new threshold, and click the [Modify] button.

    → A confirmation screen appears.

  3. Click the [OK] button.

    → Setting of the TPV threshold starts.

  4. Click the [Done] button to return to the [Volume] screen.