Get G-List

Overview

This function exports and saves the Grown Defect List (G-List) recorded in the disk management area (the area that cannot usually be accessed).

The drive has a function to automatically replace detected failed blocks with alternative blocks. When failed blocks are replaced, G-List information shows the location and number of replaced blocks that are recorded in the management area.

Caution

  • Execute this function only when directed by our engineer to do so.

  • Before starting this function, stop the host access.

  • Do not export the G-List while using the functions to access the drive, such as formatting, RAID migration, or Advanced Copy.

  • When exporting of the G-List is complete, save the exported G-List file immediately.

Format of a G-List Text File

The file name is "G-List_serial number for the storage system_YYYY-MM-DD_hh-mm-ss.txt". (YYYY-MM-DD_hh-mm-ss: the date and time when the download screen is displayed.)

Item Description

Serial Number

The serial number of the storage system is exported.

G-List (DE#n) Information Date YYYY-MM-DD

The DE number and the date, on which the G-List information is exported, are displayed in the following format.

G-List (DE#n) Information Date YYYY-MM-DD

YYYY-MM-DD: Year-Month-Date

A G-List for each DE is exported in a table format.

Item Description

Drive

Drive numbers are displayed.

Type/Usage

The drive capacity and the intended use (Data/HS/Dedicated) are exported.

  • Data: Drive for user data

  • HS: Global Hot Spare (A HS which can be used in any RAID group)

  • Dedicated: Dedicated Hot Spare (A HS which can be used only in a specific RAID group)

Caution

  • The displayed drive capacity in the exported G-List may differ from the product's actual capacity. For example, the drive capacity of a "1.92 TB SSD" is displayed as "2.00 TB".

Firmware

The disk firmware version is exported.

Kind

The drive type is exported.

  • 2.5" Online

  • 3.5" Nearline

  • 2.5" SSD

  • 2.5" NVMe SSD

  • 2.5" Online SED

  • 2.5" SSD SED

Vendor ID

The drive manufacturer name is exported.

Product ID

The product name of the drive is exported.

Serial Number

The serial number of the drive is exported.

G-List Information

G-List information for each drive is exported.

  • The displayed contents vary depending on the drive.

  • For 11 or more pieces of G-List information, "..more.." is exported.

  • If the TOTAL is 0, other information is not exported.

  • If the G-List information for the corresponding drive cannot be acquired, "Error" is exported.

  • If the G-List information for the corresponding drive cannot be acquired for a status cause, "- (character string to represent the status)" is exported.

  • If the corresponding drive is being encrypted, "Encrypt Executing" is exported.

Non-medium Error Count

The number of reassigned blocks in the drive is displayed. The displayed value depends on the collection state of the G-List.

When the information cannot be obtained, a "-" (hyphen) is displayed.

Operating Procedures

  1. Click [Get G-List] in [Action].

  2. Click the [Export] button.

    → The G-List data is created.

  3. Click the [Download] button.

    → A dialog box to download the file appears.

    Caution

    • When exporting of the G-List has been completed, save the file immediately.

  4. Save the G-List.

    The default file name is "G-List_serial number for the _YYYY-MM-DD_hh-mm-ss.txt".

    (YYYY-MM-DD_hh-mm-ss: the date and time when the download screen (Step 2) is displayed.)

  5. Click the [Done] button to return to the [Event/Dump] screen.