vSAN 8 New Features - Express Storage Architecture Explained!
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- Опубліковано 2 жов 2024
- Learn more details about VMware vSAN 8 and the Express Storage Architecture that has many great advantages over the original storage architecture found in legacy vSAN versions we have today. Learn about 100X performance improvement using native snapshots! Also, learn about how disk groups are going away in favor of storage pools!
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Why did VMware add the new vSAN 8 Express Storage Architecture? - 0:37
Comparing hardware then and now - 0:56
What are the core technologies that comprise the vSAN 8 solution? - 3:07
New Log Structured File System and Object Manager - 3:30
Storage Pools have replaced Disk Groups in Express Storage Architecture - 4:22
The storage pool eliminates the need for cache and capacity tiers - 5:15
Services have been moved much further up the storage stack such as Compression, Encryption, etc - 5:50
Performance, efficiencies, capacity benefits, reduced network, and CPU overhead is minimized - 7:08
Adaptive RAID 5 Erasure coding, including 4+1 and 2+1 schemes - 7:30
RAID5 can now be enabled with a 3 host vSAN cluster - 8:08
vSAN 8 adapts to the number of hosts in teh cluster and adapts parity schemes with Express Storage Architecture - 8:35
Express Storage Architecture introduces native vSAN snapshots - 9:12
Highlights include performance, consistent, fast, scalable, and 100X performance improvements! 9:56
Original Storage Architecture with vSAN still exists in vSAN 8 along with ESA - 11:00
It requires vSAN ready nodes certified to work with the Express Storage Architecture - 11:50
Wrapping up final thoughts on vSAN 8 Express Storage Architecture - 12:46
Read my full technical write up of the new vSAN 8 technical features here:
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Read my post on vSphere 8, vSAN 8, and VMware Cloud Foundation+ here:
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Hello There. How much memory does VSAN ESA consumes based on one NVMe disk per host. Especially in a home lab with limited memory not running nested just a bit concerned. Thank you
I am using NFS datastores on SSD's in my NAS or on a spinning raid 6 storage pool on the NAS (for less important stuff.) I suppose I should be doing this better, I just don't know how. Do you have a video on the basics of setting up a SAN properly? I am a VMUG advantage member.
I have a question. Do we need a Raid Controller or card for ESA AF-2/4/6?
This is a very interesting topic and I’m still new to all of the benefits that VMware are releasing, however, I’m having a hard time seeing the benefit from the vsan addition. As a commenter has posted before me, it requires flash drives in order to make this efficient. Personally, at home I’m running on traditional sata ssd’s which works fine but my question is how can I visualize and quantify this improvement. Are there tests on my system that can give me a baseline for speed performance before and after? If you have to have something like nvme flash drives and then put vsan on top isn’t it kind of like adding a cherry on top of a sundae? It’s already quick but just slightly quicker?
@shpongle64, thank you for the comment. Create a topic over on the VHT forums here: www.virtualizationhowto.com/community and let's discuss.
Is it possible to upgrade to ESA, from existing OSA Configuration if the esxi nodes have already identical drives capacity and model for caching tier and capacity tier as well?
Manol, I believe it will be. VMware is sure to allow upgrades from OSA for traditional configurations. It is my understanding it will allow upgrading from existing configurations that align with the OSA. I also had confirmed it will be possible to bypass the checks for the new ESA to run this on lab hardware without 25 Gbps networking and certified hardware which will be great.
There is no upgrade path ( OSA TO ESA) you will need to build out a new cluster and then migrate the workloads.
I am not sure, will there be an upgrade path for this without extracting the data completely. It really depends the low level file system it uses. If it is same (which I am nearly sure not) then it could be possible with redistribution of data. Or maybe if you have %50+ free capacity the online transition may be happen depending on your host count and requirements.
Hey handsome
adding more layers cannot increase performance. and then intelligently used=no data when needed
Magic, thanks for the comment! I think the layer added improves performance due to the all new file system. Also, as described in the video, other processes have been moved to more efficient locations in the storage stack, like compression and encryption.
It pains me to admin that vSAN is now taking the Nutanix road. Ditching the cache drives and make all disks into both cache and capacity.
Onur, that is interesting to know. I have only played around briefly with Nutanix in a few lab scenarios. So far, it seems like VMware has been able to deliver on besting previous vSAN versions with each new release. I am keeping my fingers crossed vSAN 8 is as good in the real world as it looks on paper.
@@VirtualizationHowto The important question i've yet to find a definitive answer is how do you upgrade to vSAN 8 from previous versions ? And even if it's possible... You have different size and performance ssds and now they all live happily ever after in the same pool ? Or you're screwed buy a new "compatible" set of disks ?
@@onur6020 Hi Onur, as I read from vmware documentations, drives and some host components needs to be identical. it is not something like you can run the new ESA on any hardware (of course there will be ways to install on unsupported platforms). The reason is write mechanism is changing. that's why It requires all NVME environments. they are trying to eliminate the caching and SCSI overhead on the write and read operations. You are right about the Nutanix, but in my opinion, they are trying to make something similar to Netapp Solidfire instead of Nutanix.
With aditional price or in Enterprise licence ;)
Michal, guessing enterprise :)
Why can't it work with current hardware ???
It looks like it requires 25 gig connectivity and specific TLC and QLC flash devices. These will probably need to be on the hardware compatibility list. I am hoping there will be low-level ways to disable these checks to run Express Storage Architecture using unsupported hardware for home lab purposes.
@@VirtualizationHowto This is going to be hard on home lab users as 25 gig gear is still expensive. Even in the used market. I have several 25 gig SFP+ cards but the 25 gig network switches are expensive currently so can only run them at 10 gig via MikroTik switch.