Got it

What's the difference between Thin provisioning and Thick provisioning lazy zeroed?

Created: Jun 16, 2021 02:56:56Latest reply: May 24, 2022 09:38:01 455 4 0 0 0
  Rewarded HiCoins: 0 (problem resolved)

Hello, team!

When creating a disk on FusionCompute, there are three "Configuration Modes": common, thin provisioning, and thick provisioning lazy zeroed

What are the differences between the three modes?

  • x
  • convention:

Featured Answers

Best answer

Recommended answer

olive.zhao
Admin Created Jun 16, 2021 03:03:01

Hello, Helen!

Yes, the FusionCompute disk has three specified types.

Common: The system allocates disk space based on the disk capacity. During disk creation in this mode, data remaining on the physical device will be zeroed out. The performance of the disks in this mode is better than that in the other two modes, but the creation duration may be longer than that required in the other modes.

It is recommended that system disks use this configuration mode.

Thin provisioning: In this mode, the system allocates part of the configured disk capacity for the first time, and allocates the rest of disk capacity based on the storage usage of the disk until the configured disk capacity is allocated.

In this mode, data store overcommitment may occur. Therefore, you are advised to set the overcommitment ratio to a value less than or equal to 50%. The overcommitment ratio is determined by the ratio of Allocated Capacity to Total Capacity.

Thick provisioning lazy zeroed: The system allocates disk space based on the disk capacity. However, data remaining on the physical device is zeroed out only on the first data written from the VM as required. In this mode, the disk creation speed is faster than that in the Common mode, and the I/O performance is medium between the Common and Thin provisioning modes.

This mode is supported only when the data store type is virtualized local disks or virtual SAN storage.

And I have a post on this that I recommend to you:

Difference between Thick and Thin Provisioning

Hope this can help you!

View more
  • x
  • convention:

Helen.F
Helen.F Created Jun 21, 2021 02:33:49 (0) (0)
Thanks!  
All Answers
olive.zhao
olive.zhao Admin Created Jun 16, 2021 03:03:01

Hello, Helen!

Yes, the FusionCompute disk has three specified types.

Common: The system allocates disk space based on the disk capacity. During disk creation in this mode, data remaining on the physical device will be zeroed out. The performance of the disks in this mode is better than that in the other two modes, but the creation duration may be longer than that required in the other modes.

It is recommended that system disks use this configuration mode.

Thin provisioning: In this mode, the system allocates part of the configured disk capacity for the first time, and allocates the rest of disk capacity based on the storage usage of the disk until the configured disk capacity is allocated.

In this mode, data store overcommitment may occur. Therefore, you are advised to set the overcommitment ratio to a value less than or equal to 50%. The overcommitment ratio is determined by the ratio of Allocated Capacity to Total Capacity.

Thick provisioning lazy zeroed: The system allocates disk space based on the disk capacity. However, data remaining on the physical device is zeroed out only on the first data written from the VM as required. In this mode, the disk creation speed is faster than that in the Common mode, and the I/O performance is medium between the Common and Thin provisioning modes.

This mode is supported only when the data store type is virtualized local disks or virtual SAN storage.

And I have a post on this that I recommend to you:

Difference between Thick and Thin Provisioning

Hope this can help you!

View more
  • x
  • convention:

Helen.F
Helen.F Created Jun 21, 2021 02:33:49 (0) (0)
Thanks!  
Unicef
Unicef MVE Created Nov 20, 2021 13:09:41

Good answers
View more
  • x
  • convention:

olive.zhao
olive.zhao Admin Created May 24, 2022 09:38:01

Hello, this is another post about the difference between Thick Provisioning and Thin Provisioning.

View more
  • x
  • convention:

Comment

You need to log in to comment to the post Login | Register
Comment

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " User Agreement."

My Followers

Login and enjoy all the member benefits

Login

Block
Are you sure to block this user?
Users on your blacklist cannot comment on your post,cannot mention you, cannot send you private messages.
Reminder
Please bind your phone number to obtain invitation bonus.
Information Protection Guide
Thanks for using Huawei Enterprise Support Community! We will help you learn how we collect, use, store and share your personal information and the rights you have in accordance with Privacy Policy and User Agreement.