Depth: VMware VSAN 6.0 Performance features explained

Source: Internet
Author: User
Tags webp

When I joined EMC world many years ago, I had the privilege of talking to Chuck Hollis and WMware about a very interesting thing. They wanted to take advantage of local storage resources that were not exploited in ESX hosts. Instead of simply keeping the ESX boot image, they want the entire ESX cluster to be able to use these resources. We also talked about a similar clustered file system that can protect data across ESX hosts. When I said that the disks were too slow, they said they could use SSDs to speed up IO operations. I thought it was interesting and curious when there would be concrete practice, as you guessed something really came up: Virtual SAN. I was curious when the first version appeared, but really, it didn't feel right. A year later, today's Vsan has evolved to Vsan 6.0.


Of course, VSAN 6.0 is much better, faster, and bigger. With vsphere 6.0,VMDK, you can scale to 62TB, up to 64 hosts in the cluster. The number of virtual machines on a node has doubled from 100 to 200, with a maximum of 6400 units per cluster. Multi-node means more capacity and higher performance. With a 4TB hard drive, you can increase the original capacity to 9PB.

650) this.width=650; "Src=" http://mmbiz.qpic.cn/mmbiz/ uoeqzl4xkia8tgi1nfqrcmerovjgrmd7fic3nkjnrts06vmbcstomuliajdbxjqzmqyz3unmeayilkpuianzzedsw/640?tp=webp& Wxfrom=5 "style=" Margin:0px;padding:0px;height:auto;width:auto; "alt=" 640?tp=webp&wxfrom=5 "/>

VSAN6.0 introduces a new storage-based policy management (Storage policies Based Management) pattern that enables precise management at the level of each virtual machine, rather than the entire storage data of the faces. This allows each virtual machine to individually configure content such as availability, performance, and auto-thin provisioning. Because these are dynamically configured, if a virtual machine suddenly requires additional protection, then Vsan will soon be supported. This new approach is simpler and supports finer control than previous versions.

Vsan is a good tool to use with traditional hard drives as storage space and as a hybrid storage system that uses flash memory for read cache acceleration. To achieve optimal performance, an all-flash configuration is introduced. In order to control costs, storage space uses a cost-effective MLC. Vsan still requires a cache layer, but this is not for performance. Instead, this is to minimize write workloads and thus prolong their service life. The writing characteristics of workloads are a very worthwhile issue to study.

650) this.width=650; "Src=" http://mmbiz.qpic.cn/mmbiz/ uoeqzl4xkia8tgi1nfqrcmerovjgrmd7fxhphha9yjuhfegg76kgyoicie5hteib5brpsblpyddv06uxihtkcyiqg/640?tp=webp& Wxfrom=5 "style=" Margin:0px;padding:0px;height:auto;width:auto; "alt=" 640?tp=webp&wxfrom=5 "/>
650) this.width=650; "Src=" http://mmbiz.qpic.cn/mmbiz/ uoeqzl4xkia8tgi1nfqrcmerovjgrmd7f57kiaurltul2klvrg3goelvibxryso1p6s9iccqjra7rr0ey7biibl18lg/640?tp=webp& Wxfrom=5 "style=" Margin:0px;padding:0px;height:auto;width:auto; "alt=" 640?tp=webp&wxfrom=5 "/>

Another surprising change in VSAN 6.0 is the addition of the disk format that was obtained after acquiring Virsto. Vsan now has a log-based data layout that is both efficient and fast. The new format helps reduce write amplification on the SSD and on random I/O on disk. This will lead to a performance boost, and Virsto's technology brings significant positive changes to snapshot technology in order to further improve performance. We no longer have to use outdated vsphere snapshots. We have a metadata-based snapshot and cloning technology that will be faster, more space-saving, and have very little impact on performance.


To read the full text, please click:

Depth: VMware VSAN 6.0 Performance features explained


friendly recommendation: (Long press

  • technology positive energy (No.: pp_tech ) Tech Internet & E-commerce startups

  • Big Data online (No.: dobigdata ) covers enterprise IT areas such as storage, servers, SDN, etc.

  • large number network (No.: dashunet ) Observe technology hotspots and discover technical value.

  • It Big Mouth (No.:Itbigmouth) to laugh about a yard farming, eight hanging in the push it a big step

  • on the front (No.: zaiqianxian121) delivers cutting-edge dynamic and business value.


About the public number

"Big Data online": China's largest commercial and enterprise sector " hive " from Media Alliance members. Focus on the promotion of enterprise-class IT technology! Attention please scan the following QR code:

650) this.width=650; "Src=" http://mmbiz.qpic.cn/mmbiz/ uoeqzl4xkiaicezc0rav79q6niccmqxfrm8xpkw6aibqeosmaf2buuzibysicaft7eddwsvkuryydiakeobyt2sjkdthg/640?tp=webp& Wxfrom=5 "style=" Margin:0px;padding:0px;height:auto;width:auto; "alt=" 640?tp=webp&wxfrom=5 "/>


This article is from the Enterprise IT Watch blog, so be sure to keep this source http://yuanshaolong.blog.51cto.com/752896/1617829

Depth: VMware VSAN 6.0 Performance features explained

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.