Help Center> SAP Cloud> SAP Deployment Guide (DeC)> Production System Deployment> Preparing Network Resources> Preparing for Storage Resources (DESS)
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Preparing for Storage Resources (DESS)

Scenarios

To ensure service reliability of the SAP system, you need to prepare a DESS storage pool, create disks in the DESS storage pool, and attach disks to BMSs to store data of all SAP nodes. For details about the required disk specifications, see Table 1.

Table 1 DESS disks required by SAP nodes

Flavor

Disk

Disk Specifications

physical.kl1.2xlarge.hba

SBD volume

10 GB, ultra-high I/O (low latency), SCSI, shared disk

physical.m2.medium.hba

Log volume

512 GB, ultra-high I/O (low latency), SCSI, shared disk

Data volume

6 TB, ultra-high I/O (low latency), SCSI, shared disk

Procedure

Buy DESS.

  1. Log in to the management console, click Service List and choose Storage > Dedicated Enterprise Storage Service.
  2. Click Enable DeC.
  3. Enable DeC offline as prompted. If necessary, dial 4000-955-988 or 950808 to contact HUAWEI CLOUD customer service.

Create a disk.

  1. Log in to the management console, click Service List and choose Storage > Dedicated Enterprise Storage Service.
  2. Create a disk in either of the following methods:

    • Click Create Disk close to the DESS name to go to the disk creation page.
    • Click the target DESS name. On the details page that is displayed, click Create Disk in the upper left corner to go to the page for creating a disk.

  3. View the displayed information and set required parameters for the disk to be created. For details, see Table 2.

    Table 2 Parameter description

    Parameter

    Description

    AZ

    Specifies the AZ of the DESS where the disk resides.

    Type

    Specifies the type of the DESS where the disk resides.

    Name

    Specifies the disk name.

    When multiple disks are created, the system automatically adds suffixes. For example, disk-0001 and disk-0002.

    A disk name cannot start or end with a space and can contain a maximum of 255 characters.

    Capacity (GB)

    The disk capacity cannot exceed the DECC capacity.

    The available storage capacity cannot exceed the purchased storage capacity.
    NOTE:

    The disk capacity ranges from 10 GB to 64 TB.

    Quantity

    Specifies the number of disks to be created.

    You can create a maximum of 512 disks.

  4. Click OK.

Attach a disk to a BMS.

  1. Log in to the management console, click Service List and choose Storage > Dedicated Enterprise Storage Service.
  2. Click the name of the target DESS to go to the details page.
  3. Attach a disk in either of the following methods:

    • Click Attach in the row where the target disk locates to go to the page for attaching the disk.
    • Click the name of the target disk to go to the details page. Click Attach in the upper left corner to go to the page for attaching the disk.

  4. Select the BMS that the disk is to be attached to.

    The page automatically queries the BMS that the disks can be attached to. The displayed information includes Name/ID, Status, Flavor, Image, Private IP Address, and AZ.

  5. Click OK. A message is displayed indicating that the command for attaching the disk is successfully delivered.