Performance (Advanced Copy)

Overview

This function displays the performance information of the volumes for Advanced Copy.

Note

  • The performance information of the Data Container Volume is not displayed.

  • Performance information is obtained when performance monitoring is operated from Web GUI, CLI, or any other monitoring software. Refer to the [Start/Stop Performance Monitoring] function for details on how to start performance monitoring with Web GUI.

  • The interval for acquiring performance information can be specified when starting the monitoring. When using Web GUI, the default interval is 30 seconds.

  • The average performance values during the specified interval are displayed.

  • When the performance monitoring function is stopped, "0" is displayed as the performance information.

  • In this manual, "volumes" include "External Volumes" if differentiation is not specifically required.

Display Contents

In this screen, the performance information of the volumes for Advanced Copy is displayed. When the performance monitoring function is stopped, "0" is displayed as the performance information.

Volume List

Item Description

No.

The volume number is displayed.

Click this item to display the [Volume Detail] screen ([Basic] tab).

Name

The volume name is displayed.

Click this item to display the [Volume Detail] screen ([Basic] tab).

Type

The volume type is displayed.

Standard

WSV

TPV

FTV

SDV

SDPV

Temporary

Usage

The usage of the volume is displayed.

Refer to Usage of Volumes for details.

Read IOPS

The number of reads per second is displayed.

Write IOPS

The number of writes per second is displayed.

Read Throughput

The amount of transferred data that is read per second is displayed.

Write Throughput

The amount of transferred data that is written per second is displayed.

Read Cache Hit Rate

The cache hit rate (0 to 100 %) (for read) is displayed.

Write Cache Hit Rate

The cache hit rate (0 to 100 %) (for write) is displayed.

Prefetch Cache Hit Rate

The cache hit rate (0 to 100 %) (for prefetch) is displayed.

Extreme Cache Cache Hit Rate

The cache hit rate (0 to 100 %) of Extreme Cache for read I/O is displayed.

This item is displayed if Extreme Cache Pool of the storage system is enabled.

A "-" (hyphen) is usually displayed for the following volumes:

  • Extreme Cache Pool for the relevant volume is disabled

  • Volume type is "SDV" or "SDPV"

  • Volumes that are created in a RAID group or a TPP configured with motorless drives (such as SSDs or NVMe SSDs)

  • ODX Buffer volumes

Note

  • Enabling or disabling Extreme Cache Pool for each volume can be performed with Web GUI or CLI. Use the [Modify Cache Parameters] function to change the setting from Web GUI.

[Volume Detail] Screen ([Basic] Tab)

Click the [Performance Information (Advanced Copy)] tab to display the detailed information.

[Performance (Advanced Copy)] Screen

The volume number, volume name, type, and usage are displayed.

Item Description

Read IOPS

The number of reads per second is displayed.

Write IOPS

The number of writes per second is displayed.

Read Throughput

The amount of transferred data that is read per second is displayed.

Write Throughput

The amount of transferred data that is written per second is displayed.

Read Cache Hit Rate

The cache hit rate (0 to 100 %) (for read) is displayed.

Write Cache Hit Rate

The cache hit rate (0 to 100 %) (for write) is displayed.

Prefetch Cache Hit Rate

The cache hit rate (0 to 100 %) (for prefetch) is displayed.

Extreme Cache Cache Hit Rate

The cache hit rate (0 to 100 %) of Extreme Cache for read I/O is displayed.

This item is displayed if Extreme Cache Pool of the storage system is enabled.

A "-" (hyphen) is usually displayed for the following volumes:

  • Extreme Cache Pool for the relevant volume is disabled

  • Volume type is "SDV" or "SDPV"

  • Volumes that are created in a RAID group or a TPP configured with motorless drives (such as SSDs or NVMe SSDs)

  • ODX Buffer volumes