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What is Relationship Between the Disk Type, Backend Storage, and Storage Array?

Created: Feb 25, 2022 11:19:37Latest reply: Feb 26, 2022 03:56:36 163 2 0 0 0
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Hello, everyone!

Can you briefly describe the relationship between disk types, backend storage, and storage arrays?

Thanks!

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Featured Answers
olive.zhao
Admin Created Feb 25, 2022 11:27:48

Hello, friend!

Disk Type: A disk type can be selected during disk creation. A disk type represents backend storage devices used by a group of disks.

Backend Storage: Backend storage is a logical storage device that stores EVS disk resources. A backend storage device contains one or more storage pools on a storage array (FusionStorage, Huawei SAN storage, or heterogeneous storage).

Relationship

The following picture shows the relationship between the disk type, backend storage, and storage array

Relationship between the disk type, backend storag

  • A storage array may belong to different availability zones. For example, storage pool 4 on storage array 2 belongs to AZ 1 while storage pools 5 and 6 belong to AZ 2.

  • A backend storage device belongs to only one AZ.

  • A storage pool belongs to only one backend storage device.

  • A disk type belongs to only one AZ.

  • A backend storage device can contain one or more storage pools, but the storage pools must be on the same storage array, for example, backend storage 2.

  • A disk type can contain multiple backend storage devices from the same AZ. The storage devices can be on the same or different storage arrays but the arrays must be in the same AZ.

  • Multiple disk types can be created for a backend storage device, for example, backend storage 1. Different disk types can be configured with different value-added features, such as SmartThin, SmartTier, and deduplication.

Hope this helps!

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All Answers
olive.zhao
olive.zhao Admin Created Feb 25, 2022 11:27:48

Hello, friend!

Disk Type: A disk type can be selected during disk creation. A disk type represents backend storage devices used by a group of disks.

Backend Storage: Backend storage is a logical storage device that stores EVS disk resources. A backend storage device contains one or more storage pools on a storage array (FusionStorage, Huawei SAN storage, or heterogeneous storage).

Relationship

The following picture shows the relationship between the disk type, backend storage, and storage array

Relationship between the disk type, backend storag

  • A storage array may belong to different availability zones. For example, storage pool 4 on storage array 2 belongs to AZ 1 while storage pools 5 and 6 belong to AZ 2.

  • A backend storage device belongs to only one AZ.

  • A storage pool belongs to only one backend storage device.

  • A disk type belongs to only one AZ.

  • A backend storage device can contain one or more storage pools, but the storage pools must be on the same storage array, for example, backend storage 2.

  • A disk type can contain multiple backend storage devices from the same AZ. The storage devices can be on the same or different storage arrays but the arrays must be in the same AZ.

  • Multiple disk types can be created for a backend storage device, for example, backend storage 1. Different disk types can be configured with different value-added features, such as SmartThin, SmartTier, and deduplication.

Hope this helps!

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  • x
  • convention:

Saqibaz
Saqibaz Created Feb 26, 2022 03:56:36

Thanks for sharing Olive
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