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.

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)

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. Refer to Usage of Volumes for details.
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

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 Data Container Volumes are selected.
Specify a new threshold, and click the [Modify] button.

→ A confirmation screen appears.
Click the [OK] button.

→ Setting of the TPV threshold starts.
Click the [Done] button to return to the [Volume] screen.