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Administrator Guide 15

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

Routine maintenance activities are the most common activities for the storage device, including powering on or off the storage device, managing users, modifying basic parameters of the storage device, and managing hardware components. This document applies to the system administrators who are responsible for carrying out routine maintenance activities, monitoring the storage device, and rectifying common device faults.
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Making Storage Space Available (Windows)

Making Storage Space Available (Windows)

This section describes how to enable a Windows-based application server to use the space of a storage system.

Context

A GPT disk is partitioned using the GPT scheme. The GPT scheme provides more advantages than the traditional Master Boot Record (MBR) partitioning scheme. GPT allows each disk to have 128 partitions and supports a maximum of 18 EB (1 EB = 1024 PB = 1,048,576 TB) disk capacity, whereas MBR allows each disk to have only four main partitions and supports only a maximum of 2 TB disk capacity. Therefore, if a LUN mapped to a host is larger than 2 TB, it is available only after being converted into a GPT disk.

The storage system supports Multi-Path I/O (MPIO) and UltraPath. UltraPath is recommended.
  • If you want to use MPIO, you must install or enable the MPIO components.
  • If you use UltraPath, see your UltraPath document.

Windows Server 2003 and Earlier Versions

Windows Server 2003 and earlier versions use the same method to enable an application server to use the space of a storage system. This section uses Windows Server 2003 as an example to describe how to enable an application server to use the space of a storage system.
  1. Log in to the Windows-based application server as administrator.
  2. Go to the Computer Management dialog box.

    Right-click the icon of My Computer on the desktop and choose Manage from the shortcut menu.

  3. In the navigation tree, choose Disk Management and scan for new logical disks.
    1. In the navigation tree on the left of the Computer Management dialog box, choose Storage > Disk Management.
    2. Right-click Disk Management and choose Rescan Disks from the shortcut menu.

      • After the scan is complete, the new logical disk is displayed in the right area (using Disk 1 as an example), as shown in Figure 4-2. The display varies according to the disk size.
        Figure 4-2  Querying the new logical disk

      • If no new logical disk is detected, perform the following steps:
        1. In the navigation tree, choose Device Manager > Disk drives.
        2. Right-click Disk drives and choose Scan for hardware changes from the shortcut menu.
        3. After the scan is complete, rescan for logical disks.
      NOTE:
      If no new logical disk is detected, troubleshoot the fault and rescan for logical disks. Possible faults include:
      • The application server is incorrectly connected to the storage system after the network cable has been removed and reinserted.
      • The link between the application server and storage system is down.
      • The rate of the Fibre Channel host port is inconsistent with that of the Fibre Channel HBA on the application server.
      • The HBA driver has been uninstalled.
      • The storage pool fails.
      • Multipathing software is not installed or an incorrect version is installed.
      • The device file on the application server is lost.

      For details, see Failure to Discover LUNs by an Application Server in the OceanStor 5300 V3&5500 V3&5600 V3&5800 V3&6800 V3 Storage System V300R003 Troubleshooting.

  4. Initialize the logical disk.
    1. Optional: Right-click Disk 1 (as shown in the red square of Figure 4-3) and choose Online from the shortcut menu. The status of Disk 1 becomes Not Initialized.

      Figure 4-3  Shortcut menu for Online

    2. Right-click Disk 1 (as shown in the red square of Figure 4-4) and choose Initialize Disk from the shortcut menu.

      Figure 4-4  Shortcut menu for initializing a disk

    3. In the Initialize Disk dialog box, select the logical disk that you want to initialize and click OK.

      Wait 1 minute. When the status of Disk 1 becomes Online, the initialization is successful.

  5. Optional: If the logical disk is larger than 2 TB, convert it into a GPT disk. Otherwise, the logical disk cannot be accessed. The following uses Disk 1 as an example.
    1. Right-click Disk 1 and choose Convert to GPT Disk from the shortcut menu, as shown in the red square in Figure 4-5.

      Figure 4-5  Shortcut menu for converting an MBR disk to a GPT disk

      After the conversion is successful, the logical disk has only one partition, as shown in Figure 4-6.

      Figure 4-6  An MBR disk converted into a GPT disk

  6. Partition and format the logical disk.

    NOTE:

    After you have performed formatting, do not read or write the logical disk until its status becomes Healthy. Otherwise, the formatting may fail. If formatting fails, try again.

  7. Right-click the new logical disk and choose Open from the shortcut menu. Now you can read and write the logical disk.

Windows Server 2008 and Later Versions

Windows Server 2008 and later versions use the same method to enable an application server to use the space of a storage system. This section uses Windows Server 2008 as an example to describe how to enable an application server to use the space of a storage system.
  1. Log in to the Windows-based application server as administrator.
  2. Go to the Computer Management dialog box.

    Press Windows+R (in full screen mode if the operation needs to be performed remotely) to open the Run dialog box. Type compmgmt.msc and press Enter.

  3. In the navigation tree, choose Disk Management and scan for new logical disks.
    1. In the navigation tree of Computer Management, choose Storage > Disk Management.
    2. Right-click Disk Management and choose Rescan Disks from the shortcut menu.

      • After the scan is complete, the new logical disk is displayed in the right area (using Disk 3 as an example), as shown in Figure 4-7. The display varies according to the disk size.
        Figure 4-7  Viewing the newly added logical disk

      • If no new logical disk is detected, perform the following steps:
        1. In the navigation tree, choose Device Manager > Disk drives.
        2. Right-click Disk drives and choose Scan for hardware changes from the shortcut menu.
        3. After the scan is complete, rescan for logical disks.
      NOTE:

      For details about possible causes, see note information in 3 in Windows Server 2003 and Earlier Versions.

      For details, see Failure to Discover LUNs by an Application Server in the OceanStor 5300 V3&5500 V3&5600 V3&5800 V3&6800 V3 Storage System V300R003 Troubleshooting.

  4. Initialize the new logical disk.
    1. Optional: Right-click Disk 3 (as shown in the red square of Figure 4-8) and choose Online from the shortcut menu. The status of Disk 3 becomes Not Initialized.

      Figure 4-8  Shortcut menu for Online

    2. Select and right-click Disk 3 (as shown in Figure 4-9), and choose Initialize Disk from the shortcut menu.

      Figure 4-9  Initializing the disk menu

    3. In the Initialize Disk dialog box, select the logical disk that you want to initialize and click OK.

      Wait 1 minute. When the status of Disk 3 becomes Online, the initialization is successful.

  5. Optional: If the capacity of the logical disk is larger than 2 TB, convert it into a GPT disk. Otherwise, it cannot be accessed.
    1. Select and right-click Disk 3 and choose Convert to GPT Disk from the shortcut menu, as shown in Figure 4-10.

      Figure 4-10  Converting a logical disk into a GPT disk

      After the conversion is successful, two partitions of the logical disk are converted into one partition, as shown in Figure 4-11.

      Figure 4-11  Successfully converting the logical disk into a GPT disk

  6. Partition and format the logical disk.

    NOTE:

    When you format the disk, do not perform read or write operations on the logical disk until its status becomes Healthy. Otherwise, the formatting may fail. If the formatting fails, cancel it and try again.

  7. Right-click the new logical disk and choose Open from the shortcut menu. Now you can perform read and write operations on the logical disk.
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Updated: 2019-04-17

Document ID: EDOC1000084191

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