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Updated on 2024-04-18 GMT+08:00
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Disk-intensive ECSs

Overview

Disk-intensive ECSs are delivered with local disks for high storage bandwidth and IOPS. In addition, local disks are more cost-effective in massive data storage scenarios. Disk-intensive ECSs have the following features:
  • They use local disks to provide high sequential read/write performance and low latency, improving file read/write performance.
  • They provide powerful and stable computing capabilities, ensuring efficient data processing.
  • They provide high intranet performance, including robust intranet bandwidth and packets per second (PPS), for data exchange between ECSs during peak hours.

Available flavors

Available now: D6, D7, D3, and D2

Table 1 Disk-intensive ECS features

Type

Compute

Disk Type

Network

D7
  • vCPU to memory ratio: 1:4
  • Number of vCPUs: 4 to 72
  • 3rd Generation Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 2.6 GHz/3.4 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Support for IPv6
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 9,000,000

Maximum intranet bandwidth: 40 Gbit/s

D6
  • vCPU to memory ratio: 1:4
  • Number of vCPUs: 4 to 72
  • Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 2.6 GHz/3.5 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 9,000,000
  • Maximum intranet bandwidth: 44 Gbit/s

D3
  • vCPU to memory ratio: 1:8 or 1:10
  • Number of vCPUs: 4 to 56
  • Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 3.0 GHz/3.4 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 5,000,000
  • Maximum intranet bandwidth: 40 Gbit/s

D2
  • vCPU to memory ratio: 1:8
  • Number of vCPUs: 4 to 48
  • Intel® Xeon® Processor E5 v4 family
  • Basic/Turbo frequency: 2.6 GHz/3.5 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 900,000
  • Maximum intranet bandwidth: 13 Gbit/s

Disk-intensive D7

Overview

D7 ECSs, with a vCPU/memory ratio of 1:4, use 3rd Generation Intel® Xeon® Scalable processors to offer powerful and stable computing performance. Equipped with 25GE high-speed intelligent NICs and local SATA disks, D7 ECSs offer ultra-high network bandwidth, PPS, and local storage. The capacity of a single SATA disk is up to 3,600 GiB, and an ECS can have up to 32 such disks attached.

Notes

For details, see Notes on Using D7 ECSs.

Scenarios

Disk-intensive D7 ECSs are suitable for applications that need to process large volumes of data and require high I/O performance and rapid data switching and processing, including massively parallel processing (MPP) databases, MapReduce and Hadoop distributed computing, big data computing, distributed file systems, network file systems, and logs and data processing applications.

Specifications

Table 2 D7 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Bandwidth

(Gbit/s)

Max. PPS

(10,000)

Max. NIC Queues

Max. NICs

Max. Supplementary NICs

Local Disks

(GiB)

Virtualization

d7.xlarge.4

4

16

5/1.7

60

2

3

32

2 × 3,600

KVM

d7.2xlarge.4

8

32

10/3.5

120

4

4

64

4 × 3,600

KVM

d7.4xlarge.4

16

64

20/6.7

240

4

6

96

8 × 3,600

KVM

d7.6xlarge.4

24

96

25/10

350

8

8

128

12 × 3,600

KVM

d7.8xlarge.4

32

128

30/13.5

450

8

8

192

16 × 3,600

KVM

d7.12xlarge.4

48

192

40/20

650

16

8

256

24 × 3,600

KVM

d7.16xlarge.4

64

256

42/27

850

16

8

256

32 × 3,600

KVM

Disk-intensive D6

Overview

D6 ECSs, with a vCPU/memory ratio of 1:4, use 2nd Generation Intel® Xeon® Scalable processors to offer powerful and stable computing performance. Equipped with 25GE high-speed intelligent NICs and local SATA disks, D6 ECSs offer ultra-high network bandwidth, PPS, and local storage. The capacity of a single SATA disk is up to 3600 GiB, and an ECS can have up to 36 such disks attached.

Notes

For details, see Notes on Using D6 ECSs.

Scenarios

Disk-intensive D6 ECSs are suitable for applications that need to process large volumes of data and require high I/O performance and rapid data switching and processing, including massively parallel processing (MPP) databases, MapReduce and Hadoop distributed computing, and big data computing, distributed file systems, network file systems, and logs and data processing applications.

Specifications

Table 3 D6 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Bandwidth

(Gbit/s)

Max. PPS

(10,000)

Max. NIC Queues

Max. NICs

Local Disks

(GiB)

Virtualization

d6.xlarge.4

4

16

5/2

60

2

3

2 × 3,600

KVM

d6.2xlarge.4

8

32

10/4

120

4

4

4 × 3,600

KVM

d6.4xlarge.4

16

64

20/7.5

240

8

8

8 × 3,600

KVM

d6.6xlarge.4

24

96

25/11

350

8

8

12 × 3,600

KVM

d6.8xlarge.4

32

128

30/15

450

16

8

16 × 3,600

KVM

d6.12xlarge.4

48

192

40/22

650

16

8

24 × 3,600

KVM

d6.16xlarge.4

64

256

42/30

850

32

8

32 × 3,600

KVM

d6.18xlarge.4

72

288

44/34

900

32

8

36 × 3,600

KVM

Disk-intensive D3

Overview

D3 ECSs use Intel® Xeon® Scalable processors to offer powerful and stable computing performance. Equipped with proprietary 25GE high-speed intelligent NICs and local SAS disks, D3 ECSs offer ultra-high network bandwidth, PPS, and local storage.

Notes

For details, see Notes on Using D3 ECSs.

Scenarios

Disk-intensive D3 ECSs are suitable for applications that need to process large volumes of data and require high I/O performance and rapid data switching and processing, including massively parallel processing (MPP) databases, MapReduce and Hadoop distributed computing, big data computing, distributed file systems, network file systems, and logs and data processing applications.

Specifications

Table 4 D3 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Bandwidth

(Gbit/s)

Max. PPS

(10,000)

Max. NIC Queues

Max. NICs

Local Disks

(GiB)

Virtualization

d3.xlarge.8

4

32

2.5/2.5

50

2

3

2 × 1,675

KVM

d3.2xlarge.8

8

64

5/5

100

2

4

4 × 1,675

KVM

d3.4xlarge.8

16

128

10/10

120

4

8

8 × 1,675

KVM

d3.6xlarge.8

24

192

15/15

160

6

8

12 × 1,675

KVM

d3.8xlarge.8

32

256

20/20

200

8

8

16 × 1,675

KVM

d3.12xlarge.8

48

384

32/32

220

16

8

24 × 1,675

KVM

d3.14xlarge.10

56

560

40/40

500

16

8

28 × 1,675

KVM

Disk-intensive D2

Overview

D2 ECSs are KVM-based. They use local storage for high storage performance and intranet bandwidth.

Notes

For details, see Notes on Using D2 ECSs.

Scenarios

Disk-intensive D2 ECSs are suitable for applications that need to process large volumes of data and require high I/O performance and rapid data switching and processing, including massively parallel processing (MPP) databases, MapReduce and Hadoop distributed computing, big data computing, distributed file systems, network file systems, and logs and data processing applications.

Specifications

Table 5 D2 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Bandwidth

(Gbit/s)

Max. PPS

(10,000)

Max. NIC Queues

Local Disks

(GiB)

Virtualization

d2.xlarge.8

4

32

3/1

15

2

2 × 1,675

KVM

d2.2xlarge.8

8

64

5/2

30

2

4 × 1,675

KVM

d2.4xlarge.8

16

128

8/4

40

4

8 × 1,675

KVM

d2.6xlarge.8

24

192

10/6

50

6

12 × 1,675

KVM

d2.8xlarge.8

32

256

13/8

60

8

16 × 1,675

KVM

d2.12xlarge.8

48

384

13/13

90

8

24 × 1,675

KVM

Performance of a Single SATA HDD Disk Attached to a D7 ECS

Table 6 Performance of a single SATA HDD disk attached to a D7 ECS

Metric

Performance

Disk capacity

3,600 GiB

Maximum throughput

210 MBps

Access latency

Millisecond-level

Performance of a Single SATA HDD Disk Attached to a D6 ECS

Table 7 Performance of a single SATA HDD disk attached to a D6 ECS

Metric

Performance

Disk capacity

3,600 GiB

Maximum throughput

198 Mbit/s

Access latency

Millisecond-level

Performance of a Single SAS HDD Disk Attached to a D3 ECS

Table 8 Performance of a single SAS HDD disk attached to a D3 ECS

Metric

Performance

Disk capacity

1,675 GiB

Maximum throughput

247 Mbit/s

Access latency

Millisecond-level

Performance of a Single SAS HDD Disk Attached to a D2 ECS

Table 9 Performance of a single SAS HDD disk attached to a D2 ECS

Metric

Performance

Disk capacity

1,675 GiB

Maximum throughput

230 MB/s

Access latency

Millisecond-level

Notes on Using D7 ECSs

  • Currently, the following operating systems are supported (subject to the information displayed on the console):
    • CentOS 6.3/6.4/6.5/6.6/6.7/6.8/6.9/6.10/7.0/7.1/7.2/7.3/7.4/7.5/7.6/8.0 64bit
    • SUSE Enterprise Linux Server 11 SP3/SP4 64bit
    • SUSE Enterprise Linux Server 12 SP1/SP2/SP3/SP4 64bit
    • Red Hat Enterprise Linux 6.4/6.5/6.6/6.7/6.8/6.9/6.10/7.0/7.1/7.2/7.3/7.4/7.5/7.6/8.0 64bit
    • Windows Server 2008 R2 Enterprise 64bit
    • Windows Server 2012 R2 Standard 64bit
    • Windows Server 2016 Standard 64bit
    • Debian 8.1.0/8.2.0/8.4.0/8.5.0/8.6.0/8.7.0/8.8.0/9.0.0 64bit
    • EulerOS 2.2/2.3/2.5 64bit
    • Fedora 22/23/24/25/26/27/28 64bit
    • OpenSUSE 13.2/15.0/15.1/42.2/42.3 64bit
  • If the host where a D7 ECS is deployed is faulty, the ECS cannot be restored through live migration.
    • If the host is faulty or subhealthy and needs to be repaired, you need to stop the ECS.
    • In case of system maintenance or hardware faults, the ECS will be redeployed (to ensure HA) and cold migrated to another host. The local disk data of the ECS will not be retained.
  • Specifications cannot be changed.
  • D7 ECSs do not support local disk snapshots or backups.
  • D7 ECSs can use both local disks and EVS disks to store data. In addition, they can have EVS disks attached to provide a larger storage size. Note the following when using the two types of storage media (local disks and EVS disks):
    • Only an EVS disk can be used as the system disk of a D7 ECS.
    • Both EVS disks and local disks can be used as data disks of a D7 ECS.
    • A maximum of 24 disks (including VBD and local disks) can be attached to a D7 ECS. Among the 24 disks, the maximum number of VBD disks (including the system disk) is 24. For details, see Can I Attach Multiple Disks to an ECS?

      The maximum number of disks attached to an existing D7 ECS remains unchanged.

  • Modify the fstab file to set automatic disk mounting at ECS start. For details, see Setting Automatic Mounting at System Start.
  • The local disk data of a D7 ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application does not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.
  • When a D7 ECS is deleted, its local disk data will also be automatically deleted, which can take some time. As a result, a D7 ECS takes a longer time than other ECSs to be deleted. Back up the data before deleting such an ECS.
  • Do not store service data in local disks for a long time. Instead, store it in EVS disks. To improve data security, use a high availability architecture and back up data in a timely manner.
  • Local disks can only be purchased during ECS creation. They cannot be separately purchased after the ECS has been created. The quantity and capacity of your local disks are determined according to the specifications of your ECS.

Notes on Using D6 ECSs

  • Currently, the following operating systems are supported (subject to the information displayed on the console):
    • CentOS 6.3/6.4/6.5/6.6/6.7/6.8/6.9/6.10/7.0/7.1/7.2/7.3/7.4/7.5/7.6/8.0 64bit
    • SUSE Enterprise Linux Server 11 SP3/SP4 64bit
    • SUSE Enterprise Linux Server 12 SP1/SP2/SP3/SP4 64bit
    • Red Hat Enterprise Linux 6.4/6.5/6.6/6.7/6.8/6.9/6.10/7.0/7.1/7.2/7.3/7.4/7.5/7.6/8.0 64bit
    • Windows Server 2008 R2 Enterprise 64bit
    • Windows Server 2012 R2 Standard 64bit
    • Windows Server 2016 Standard 64bit
    • Debian 8.1.0/8.2.0/8.4.0/8.5.0/8.6.0/8.7.0/8.8.0/9.0.0 64bit
    • EulerOS 2.2/2.3/2.5/2.9 64bit
    • Fedora 22/23/24/25/26/27/28 64bit
    • OpenSUSE 13.2/15.0/15.1/42.2/42.3 64bit
  • If the host where a D6 ECS is deployed is faulty, the ECS cannot be restored through live migration.
    • If the host is faulty or subhealthy and needs to be repaired, you need to stop the ECS.
    • In case of system maintenance or hardware faults, the ECS will be redeployed (to ensure HA) and cold migrated to another host. The local disk data of the ECS will not be retained.
  • D6 ECSs do not support specifications modification.
  • D6 ECSs do not support local disk snapshots or backups.
  • D6 ECSs can use both local disks and EVS disks to store data. Restrictions on using the two types of storage media are as follows:
    • Only an EVS disk can be used as the system disk of a D6 ECS.
    • Both EVS disks and local disks can be used as data disks of a D6 ECS.
    • A maximum of 60 disks (including VBD, SCSI, and local disks) can be attached to a D6 ECS. Among the 60 disks, the maximum number of SCSI disks is 30, and the VBD disks (including the system disk) is 24. For details, see Can I Attach Multiple Disks to an ECS?

      The maximum number of disks attached to an existing D6 ECS remains unchanged.

  • You can modify the fstab file to set automatic disk mounting at ECS start. For details, see Configuring Automatic Mounting at System Start.
  • The local disk data of a D6 ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application does not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.
  • When a D6 ECS is deleted, its local disk data will also be automatically deleted, which can take some time. As a result, a D6 ECS takes a longer time than other ECSs to be deleted. Back up the data before deleting such an ECS.
  • Do not store service data in local disks for a long time. Instead, store it in EVS disks. To improve data security, use a high availability architecture and back up data in a timely manner.
  • Local disks can only be purchased during ECS creation. They cannot be separately purchased after the ECS has been created. The quantity and capacity of your local disks are determined according to the specifications of your ECS.

Notes on Using D3 ECSs

  • Currently, the following operating systems are supported (subject to the information displayed on the console):
    • CentOS 6.3/6.4/6.5/6.6/6.7/6.8/6.9/6.10/7.0/7.1/7.2/7.3/7.4/7.5/7.6/8.0 64bit
    • Red Hat Enterprise Linux 6.4/6.5/6.6/6.7/6.8/6.9/6.10/7.0/7.1/7.2/7.3/7.4/7.5/7.6/8.0 64bit
    • Windows Server 2008 R2 Enterprise 64bit
    • Windows Server 2012 R2 Standard 64bit
    • Windows Server 2016 Standard 64bit
    • SUSE Enterprise Linux Server 11 SP3/SP4 64bit
    • SUSE Enterprise Linux Server 12 SP1/SP2/SP3/SP4 64bit
    • Debian 8.1.0/8.2.0/8.4.0/8.5.0/8.6.0/8.7.0/8.8.0/9.0.0 64bit
    • EulerOS 2.2/2.3/2.5 64bit
    • EulerOS 2.5 64bit
    • Fedora 22/23/24/25/26/27/28 64bit
    • OpenSUSE 13.2/15.0/15.1/42.2/42.3 64bit
  • If the host where a D3 ECS resides becomes faulty, the ECS cannot be restored through live migration.
    • If the host is faulty or subhealthy, you need to stop the ECS for hardware repair.
    • In case of system maintenance or hardware faults, the ECS will be redeployed (to ensure HA) and cold migrated to another host. The local disk data of the ECS will not be retained.
  • D3 ECSs do not support specifications modification.
  • D3 ECSs do not support local disk snapshots or backups.
  • D3 ECSs can use both local disks and EVS disks to store data. In addition, they can have EVS disks attached to provide a larger storage size. Use restrictions on the two types of storage media are as follows:
    • Only an EVS disk, not a local disk, can be used as the system disk of a D3 ECS.
    • Both EVS disks and local disks can be used as data disks of a D3 ECS.
    • A maximum of 60 disks (including VBD, SCSI, and local disks) can be attached to a D3 ECS. Among the 60 disks, the maximum number of SCSI disks is 30, and the VBD disks (including the system disk) is 24. For details, see Can I Attach Multiple Disks to an ECS?

      The maximum number of disks attached to an existing D3 ECS remains unchanged.

  • You can modify the fstab file to set automatic disk mounting at ECS start. For details, see Setting Automatic Mounting at System Start.
  • The local disk data of a D3 ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application does not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.
  • When a D3 ECS is deleted, its local disk data will also be automatically deleted, which can take some time. As a result, a D3 ECS takes a longer time than other ECSs to be deleted. Back up the data before deleting such an ECS.
  • Do not store service data in local disks for a long time. Instead, store it in EVS disks. To improve data security, use a high availability architecture and back up data in a timely manner.
  • Local disks can only be purchased during ECS creation. The quantity and capacity of your local disks are determined according to the specifications of your ECS.

Notes on Using D2 ECSs

  • Currently, the following operating systems are supported (subject to the information displayed on the console):
    • CentOS 6.7/6.8/7.2/7.3/7.4 64bit
    • SUSE Enterprise Linux Server 11 SP3/SP4 64bit
    • SUSE Enterprise Linux Server 12 SP1/SP2 64bit
    • Red Hat Enterprise Linux 6.8/7.3 64bit
    • Windows Server 2008 R2 Enterprise 64bit
    • Windows Server 2012 R2 Standard 64bit
    • Windows Server 2016 Standard 64bit
    • Debian 8.7/9.0.0 64bit
    • EulerOS 2.2 64bit
    • Fedora 25/26 64bit
    • OpenSUSE 42.2/42.3 64bit
  • If the host where a D2 ECS resides becomes faulty, the ECS cannot be restored through live migration.
    • If the host is faulty or subhealthy, you need to stop the ECS for hardware repair.
    • In case of system maintenance or hardware faults, the ECS will be redeployed (to ensure HA) and cold migrated to another host. The local disk data of the ECS will not be retained.
  • To improve network performance, you can set the NIC MTU of a D2 ECS to 8888.
  • D2 ECSs do not support specifications modification.
  • D2 ECSs do not support local disk snapshots or backups.
  • D2 ECSs do not support automatic recovery.
  • D2 ECSs can use both local disks and EVS disks to store data. In addition, they can have EVS disks attached to provide a larger storage size. Use restrictions on the two types of storage media are as follows:
    • Only an EVS disk, not a local disk, can be used as the system disk of a D2 ECS.
    • Both EVS disks and local disks can be used as data disks of a D2 ECS.
    • A D2 ECS can have a maximum of 60 attached disks (including VBD, SCSI, and local disks). Among the 60 disks, the maximum number of SCSI disks is 30, and the maximum number of VBD disks is 24 (including the system disk). For details about constraints, see Can I Attach Multiple Disks to an ECS?
  • You can modify the fstab file to set automatic disk mounting at ECS start. For details, see Setting Automatic Mounting at System Start.
  • The basic resources, including vCPUs, memory, and image of a stopped D2 ECS will continue to be billed. To stop the ECS from being billed, delete it and its associated resources.
  • The local disk data of a D2 ECS may be lost if an exception occurs, such as physical server breakdown or local disk damage. If your application does not use the data reliability architecture, it is a good practice to use EVS disks to build your ECS.
  • When a D2 ECS is deleted, its local disk data will also be automatically deleted, which can take some time. As a result, a D2 ECS takes a longer time than other ECSs to be deleted. Back up the data before deleting such an ECS.
  • Do not store service data in local disks for a long time. Instead, store it in EVS disks. To improve data security, use a high availability architecture and back up data in a timely manner.
  • Local disks can only be purchased during ECS creation. The quantity and capacity of your local disks are determined according to the specifications of your ECS.

Handling Damaged Local Disks Attached to an ECS of D Series

If a local disk attached to an ECS is damaged, perform the following operations to handle this issue:

For a Linux ECS:
  1. Detach the faulty local disk.
    1. Run the following command to query the mount point of the faulty disk:

      df –Th

      Figure 1 Querying the mount point
    2. Run the following command to detach the faulty local disk:

      umount Mount point

      In the example shown in Figure 1, the mount point of /dev/sda1 is /mnt/sda1. Run the following command:

      umount /mnt/sda1

  2. Check whether the mount point of the faulty disk is configured in /etc/fstab of the ECS. If yes, comment out the mount point to prevent the ECS from entering the maintenance mode upon ECS startup after the faulty disk is replaced.
    1. Run the following command to obtain the partition UUID:

      blkid Disk partition

      In this example, run the following command to obtain the UUID of the /dev/sda1 partition:

      blkid /dev/sda1

      Information similar to the following is displayed:

      /dev/sda1: UUID="b9a07b7b-9322-4e05-ab9b-14b8050cd8cc" TYPE="ext4"
    2. Run the following command to check whether /etc/fstab contains the automatic mounting information about the disk partition:

      cat /etc/fstab

      Information similar to the following is displayed:

      UUID=b9a07b7b-9322-4e05-ab9b-14b8050cd8cc    /mnt   ext4    defaults        0 0
    3. If the mounting information exists, perform the following steps to delete it.
      1. Run the following command to edit /etc/fstab:

        vi /etc/fstab

        Use the UUID obtained in 2.a to check whether the mounting information of the local disk is contained in /etc/fstab. If yes, comment out the information. This prevents the ECS from entering the maintenance mode upon ECS startup after the local disk is replaced.

      2. Press i to enter editing mode.
      3. Delete or comment out the automatic mounting information of the disk partition.

        For example, add a pound sign (#) at the beginning of the following command line to comment out the automatic mounting information:

        # UUID=b9a07b7b-9322-4e05-ab9b-14b8050cd8cc    /mnt   ext4    defaults        0 0
      4. Press Esc to exit editing mode. Enter :wq and press Enter to save the settings and exit.
  3. Run the following command to obtain the WWN of the local disk:

    For example, if the sdc disk is faulty, obtain the WWN of the sdc disk.

    ll /dev/disk/by-id/ | grep wwn-

    Figure 2 Querying the WWN of the faulty local disk
  4. Stop the ECS and provide the WWN of the faulty disk to technical support personnel to replace the local disk.

    After the local disk is replaced, restart the ECS to synchronize the new local disk information to the virtualization layer.

For a Windows ECS:

  1. Open Computer Management, choose Computer Management (Local) > Storage > Disk Management, and view the disk ID, for example, Disk 1.
  2. Open Windows PowerShell as an administrator and obtain the serial number of the faulty disk according to the mapping between the disk ID and serial number.

    Get-Disk | select Number, SerialNumber

    Figure 3 Querying the mapping between the disk ID and serial number

    If the serial number cannot be obtained by running the preceding command, see Using a Serial Number to Obtain the Disk Name (Windows).

  3. Stop the ECS and provide the serial number of the faulty disk to technical support personnel to replace the local disk.

    After the local disk is replaced, restart the ECS to synchronize the new local disk information to the virtualization layer.