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What's the difference data store virtualization and non-virtualization?

Created: Nov 21, 2018 12:23:14Latest reply: Jun 30, 2022 07:13:52 9323 7 1 0 0
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Hello, team!

There are two options when I create the data store, "virtualization" and "non-virtualization", what's their difference? which one is better ? I am confused about that.  

Thanks in advance!

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Root.
Created Nov 21, 2018 13:38:32

Virtualization: virtualization feature of data storage is implemented by the host, the storage device is formatted as a file system. The local storage format is ext4, and the shared storage format is vims.
non-Virtualization: in fact Non-virtual data storage is a block device.

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George.adel
George.adel Created Nov 21, 2018 12:49:19

•Storage mode: supports Non-virtualization, Virtualization, and Raw device mapping modes.◾It takes time to create a common disk on a virtualized data store. However, a thin provisioning disk can be quickly created on a virtualized data store, taking the same time as a common disk on a non-virtualized data store takes. In addition, a thin provisioning disk supports advanced features that improve storage utilization and system security and reliability, such as thin provisioning, snapshots, and live storage migration. A common disk created on a non-virtualized data store has higher I/O performance than disks created on virtualized data stores but the common disk (except the one created on FusionStorage and advanced SAN storage as well as the local RAM disk) does not support advanced features. If Storage mode is set to Virtualization, you can set the data cluster size for the logical unit number (LUN) in Advanced. If a virtualized LUN is used, files are stored in noncontiguous data clusters on disks. A small data cluster offers high storage utilization but a low data reading rate.
◾In Raw device mapping mode, physical LUNs on SAN devices are directly attached to service VMs as disks to provide higher performance. Data stores in this mode are used as raw device mapped disks and cannot be divided. Therefore, the size of a disk created using the data store is the same as the data store size, and the disk does not support the advanced features. An RDM data store supports only VMs running certain OSs, such as Red Hat Linux Enterprise 5.4/5.5/6.1/6.2 64-bit. For details about the supported OS list, see the OS description for PVSCSI in the Compatibility.

http://support.huawei.com/hedex/pages/EDOC100007598531188559/05/EDOC100007598531188559/05/resources/05_fc/resource_mgt/it_58_57_000045.html?ft=0&fe=10&hib=4.3.5.1&id=it_58_57_000045_3&text=Adding%20a%20Data%20Store&docid=EDOC1000075985
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Root.
Root. Created Nov 21, 2018 13:38:32

Virtualization: virtualization feature of data storage is implemented by the host, the storage device is formatted as a file system. The local storage format is ext4, and the shared storage format is vims.
non-Virtualization: in fact Non-virtual data storage is a block device.

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  • x
  • convention:

save_the_world
save_the_world Created Nov 21, 2018 13:42:34

Posted by George.adel at 2018-11-21 12:49 •Storage mode: supports Non-virtualization, Virtualization, and Raw device mapping modes.◾It takes ...
sir , i saw this in the product document . What's the difference data store virtualization and non-virtualization?-2804809-1 it can't solve my question .
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save_the_world
save_the_world Created Nov 21, 2018 13:47:51

Posted by Root. at 2018-11-21 13:38 Virtualization : virtualization feature of data storage is implemented by the host, the storage dev ...
great ! it's simple but helpful .
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Root.
Root. Created Nov 21, 2018 13:54:55

Posted by save_the_world at 2018-11-21 13:47 great ! it's simple but helpful .
which one is better depends on your requirement , A common disk created on a non-virtualized data store has higher I/O performance than disks created on virtualized data stores but the common disk (except the one created on FusionStorage and advanced SAN storage as well as the local RAM disk) does not support advanced features. If Storage mode is set to Virtualization, you can set the data cluster size for the logical unit number (LUN) in Advanced. If a virtualized LUN is used, files are stored in noncontiguous data clusters on disks. A small data cluster offers high storage utilization but a low data reading rate. the George.adel mentioned that too .
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save_the_world
save_the_world Created Nov 21, 2018 13:57:04

This post was last edited by save_the_world at 2018-11-21 13:58.
Posted by Root. at 2018-11-21 13:58which one is better depends on your requirement , A common disk created on a non-virtualized data ...

aha , thanks bro .and thank you too . @George.adel
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olive.zhao
olive.zhao Admin Created Jun 30, 2022 07:13:52

Hello, friend!

For more details, see What is the difference between virtualized storage and non-virtualized storage?

Hope this helps!


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