Recover RAID Group

Overview

This function recovers the RAID groups that are in failed status.

There are two methods available for recovery:

  • Force Recover RAID Group

    The RAID groups are forcibly recovered by changing the drive status.

  • Conduct Drive Maintenance

    If forcible recovery of the RAID groups is not possible, perform the following operations to recover the RAID group:

    1. Back up any data that can be recovered (if required)

    2. Perform hot maintenance for any drives with the "Broken" state

    3. Format all the volumes in the RAID group

    4. Restore backed up data and recover the data

Requirements for Recovering a RAID Group

  • The RAID group status is "Broken"

  • A drive with the "Failed Usable" state exists in the RAID group

  • No error occurs for writing from the host to the "Failed Usable" drive

  • No error occurs for accessing all the drives in the RAID group

  • The RAID group is not blocked

Caution

  • If the forcibly recovery of a RAID group is interrupted, the RAID group is blocked. However, a forcible recovery of the RAID group can be performed again.

  • Follow the Support Department instructions when this function is required.

Note

  • After a RAID group is recovered, perform hot maintenance for any drives with the "Broken" state.

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

Select the RAID group recovering method.

Recovery Setting

Item Description Setting values

Recovery Mode

Select the RAID group recovering method.

  • Force Recover RAID Group

    The RAID groups are forcibly recovered by changing the drive status.

  • Conduct Drive Maintenance

    The RAID groups are recovered by performing the drive hot maintenance.

Force Recover RAID Group

Conduct Drive Maintenance

Display Contents

In this screen, the RAID groups that are selected in the [RAID Group] screen are displayed.

Target RAID Groups

Item Description

Name

The RAID group name is displayed.

Status

The RAID group status is displayed.

Broken

Usage

The usage of the RAID group is displayed.

Standard

Standard / WSV

WSV

TPP

FTRP

RDB

Temporary

RAID Level

The RAID level is displayed.

High Performance (RAID1+0)

High Capacity (RAID5)

High Reliability (RAID6)

High Reliability (RAID6-FR)

Reliability (RAID5+0)

Mirroring (RAID1)

Striping (RAID0)

Total Capacity

The total capacity of the RAID groups is displayed.

[Force Recover RAID Group] Screen

Drives can be checked from the list or the installation image. To switch between the list and the installation image, click the tab. Only the drives with the "Broken" state in the selected RAID group are displayed.

[Tabular] Tab

Item Description

Enclosure

The enclosure where the drive is installed is displayed.

   CE: Controller Enclosure (2.5" and 3.5")

   DE: Drive Enclosure (2.5", 3.5", and 3.5" high density DEs)

CE

CE#x

DE#yy

x: CE number

yy: DE number

Slot No.

The slot number of the enclosure where the drive is installed is displayed.

2.5" CE/DE: 0 - 23

3.5" CE/DE: 0 - 11

3.5" high density DE: 0 - 59

Type

The drive type displayed for this item is a combination of the following.

  • Drive size

    • For 2.5-inch drives: 2.5"

    • For 3.5-inch drives: 3.5"

  • Drive type

    • For SAS disks: Online

    • For Nearline SAS disks: Nearline

    • For SSDs, the following items are displayed depending on the SSD type.

      • For SSD-Hs (12 Gbit/s): SSD-H (*1)

      • For SSD-Ms (12 Gbit/s): SSD-M (*1)

      • For SSD-Ls (12 Gbit/s): SSD-L (*1)

Note that "SED" is also displayed for self encrypting drives and "AF" is also displayed for Advanced Format compliant drives.

*1  :  The displayed item varies depending on the interface speed (bandwidth) or the capacity of the reserved space. Unless otherwise specified, "SSD-H", "SSD-M", and "SSD-L" are collectively referred to as "SSD". In addition, there may be cases when "SSD SED" is used as the collective term for self encrypting SSD-Hs, SSD-Ms, and SSD-Ls.

Capacity

The capacity of the drive is displayed.

Speed

The drive speed is displayed.

For SSD or SSD SED, a "-" (hyphen) is displayed.

15000 rpm

10000 rpm

7200 rpm

[Graphic] Tab

Item Description

(Drive display)

For 2.5" CEs or 2.5" DEs, the slot numbers are applied from left to right in ascending order. For 3.5" CEs, 3.5" DEs, or 3.5" high density DEs, the slot numbers are applied from the bottom left to the top right in ascending order.

Placing the mouse pointer on the icon displays the detailed information of the drive.

Operating Procedures

When Selecting "Force Recover RAID Group"

  1. Select the RAID group that is to be recovered and click [Recover RAID Group] in [Action].

  2. Select "Force Recover RAID Group" for the recovery mode, and click the [Next >>] button.

    → Preparation for forcible recovery starts.

  3. Perform the maintenance operation according to the procedure displayed in the [Force Recover RAID Group] Screen.

  4. After completing maintenance for all of the drives, click the [Recover] button.

    → A confirmation screen appears.

  5. Click the [OK] button.

    → Forcible recovery starts.

  6. Click the [Done] button to return to the [RAID Group] screen.

When Selecting "Conduct Drive Maintenance"

  1. Select the RAID group that is to be recovered and click [Recover RAID Group] in [Action].

  2. Select "Conduct Drive Maintenance" for the recovery mode, and click the [Next >>] button.

  3. Click the [Recover] button.

    → A confirmation screen appears.

  4. Click the [OK] button.

    → Preparation for recovery starts.

  5. Click the [Done] button to return to the [RAID Group] screen.

  6. Perform hot maintenance of the drives.