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PeerSpot user
President & CEO at McMillan Consulting
Reseller
Can have an HA cluster in the absence of a shared storage device or SAN
Pros and Cons
  • "The ability to have an HA cluster in the absence of a shared storage device or SAN."

    What is our primary use case?

    We have a traditional, multi-host cluster with SAN and a small (three host) vSAN cluster alongside it. I built the vSAN cluster mostly to experiment with the platform. 

    How has it helped my organization?

    As a VAR, it has been about gaining expertise in the platform. Additionally, it has allowed us to benchmark against traditional systems. We are now in a good position to help our clients decide when and where to deploy this solution.

    What is most valuable?

    The ability to have an HA cluster in the absence of a shared storage device or SAN. Not having to retain SAN expertise and the cost of a storage area network (SAN) warranty are big pluses, too.

    What needs improvement?

    Perhaps a bundle, like Essentials, would allow more businesses to make the leap to the product.

    Buyer's Guide
    VMware vSAN
    April 2025
    Learn what your peers think about VMware vSAN. Get advice and tips from experienced pros sharing their opinions. Updated: April 2025.
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    For how long have I used the solution?

    One to three years.

    What's my experience with pricing, setup cost, and licensing?

    I would like to see this technology be made available to smaller businesses, who might benefit from high availability but struggle with the entry fee.

    What other advice do I have?

    Coming from the early networking days when storage was software-defined, and seeing the announcement of this product caught my interest. The platform has been improved much over the first version. Today, we are comfortable running any of our mission critical apps on it.

    Disclosure: My company has a business relationship with this vendor other than being a customer: We are a Value-Added Reseller
    PeerSpot user
    reviewer873129 - PeerSpot reviewer
    reviewer873129Software Defined Storage Sales Specialist at a computer software company with 10,001+ employees
    Vendor

    You said that you would like to see this technology be made available to smaller businesses, who might benefit from high availability but struggle with the entry fee. Have you looked at SUSE Enterprise Storage?

    Works at a tech services company with 10,001+ employees
    Real User
    Since the storage space is local to the hosts, it reduces the overall response time and improves the performance
    Pros and Cons
    • "It is simple to manage, very easy to implement and troubleshoot in case of any failures."
    • "Since the storage space is local to the hosts, it reduces the overall response time and improves the performance."
    • "Some intelligence can be added to the newest version to provide more flexibility between storage tiers."

    What is our primary use case?

    Virtual desktop infrastructure (VDI) implementation on vSAN with an environment of about 2000 desktops and 1000 servers.

    How has it helped my organization?

    Teams required to manage the storage for the entire VDI infrastructure were not required after implementing the vSAN solution. Any seasoned VMware engineer can easily manage the whole vSAN without any issues. 

    It is simple to manage, very easy to implement and troubleshoot in case of any failures.

    What is most valuable?

    • Hot add
    • Upgrades
    • Ease of management

    Any VMware engineer can easily manage vSAN, troubleshoot issues, and perform an upgrade on the vSAN without any downtime. Since the storage space is local to the hosts, it reduces the overall response time and improves the performance.

    What needs improvement?

    Some storage tiering options can be included, like other mature storage systems. Some intelligence can be added to the newest version to provide more flexibility between storage tiers, like Nutanix, to make this product a true software defined storage product.

    For how long have I used the solution?

    More than five years.
    Disclosure: I am a real user, and this review is based on my own experience and opinions.
    PeerSpot user
    Buyer's Guide
    VMware vSAN
    April 2025
    Learn what your peers think about VMware vSAN. Get advice and tips from experienced pros sharing their opinions. Updated: April 2025.
    851,823 professionals have used our research since 2012.
    it_user574359 - PeerSpot reviewer
    Engagement Cloud Solution Architect - Ericsson Cloud Services at a comms service provider with 11-50 employees
    Real User
    Technical support is perfect. Storage policies are used to perform operations in the VMs.
    Pros and Cons
    • "Storage policies are used to perform operations in the VMs. This feature allows you to create storage policies for VMs to get performance, high availability, I/O policies, etc."
    • "he list of hardware supported should be increased in the future."

    How has it helped my organization?

    VNF apps.

    What is most valuable?

    Storage policies are used to perform operations in the VMs. This feature allows you to create storage policies for VMs to get performance, high availability, I/O policies, etc.

    What needs improvement?

    Hardware supported by VMware vSAN: The list of hardware supported should be increased in the future. I would improve these areas by increasing the number of partners to support as many as possible.

    What do I think about the stability of the solution?

    We have not had stability issues.

    What do I think about the scalability of the solution?

    We have not had scalability issues.

    How are customer service and technical support?

    Technical support is perfect. VMware provides some of the best support in the market.

    Which solution did I use previously and why did I switch?

    We had no previous solution.

    How was the initial setup?

    With a good hardware design, the setup is straightforward.

    What's my experience with pricing, setup cost, and licensing?

    I have no advice about pricing.

    Which other solutions did I evaluate?

    We evaluated Cisco vSAN.

    What other advice do I have?

    It is easy to design and deploy to react to a changing environment.

    Disclosure: My company has a business relationship with this vendor other than being a customer: We are an OEM partner.
    PeerSpot user
    it_user611973 - PeerSpot reviewer
    IT Operations Manager at a tech services company with 1,001-5,000 employees
    Consultant
    Software-based deduplication and compression is a valuable feature.

    What is most valuable?

    Deduplication and compression: Software-based deduplication and compression optimizes the all-flash storage capacity.

    What needs improvement?

    Compared to other vendors, vSAN is compatible with more expensive hardware, and Nutanix is available on multiple hardware platforms, like Supermicro, Dell and Lenovo.

    For how long have I used the solution?

    I have used it for two months; just for test purposes.

    What do I think about the stability of the solution?

    We have not encountered any stability issues.

    What do I think about the scalability of the solution?

    We have not encountered any scalability issues.

    How are customer service and technical support?

    Technical support is 10/10.

    Which solution did I use previously and why did I switch?

    We did not previously use a different solution.

    How was the initial setup?

    Initial setup was straightforward; I had the KB from VMware to help me deploy the solution.

    Which other solutions did I evaluate?

    Before choosing this product, we evaluated OpenStack Object Storage.

    What other advice do I have?

    It is a good solution for customers that are looking for performance, storage efficiency, and scalability.

    Disclosure: I am a real user, and this review is based on my own experience and opinions.
    PeerSpot user
    it_user587592 - PeerSpot reviewer
    R&D Engineer at a tech vendor with 51-200 employees
    Vendor
    With the snapshot feature, we are able to keep our system in a specific status. A "unified system" that can support block + file + object, would help users face hybrid cloud environments.

    What is most valuable?

    Snapshot: You know, that is amazing.

    In our routine work, there is repeatable testing and validation. With the snapshot feature, we are able to keep our system in a specific status, including application parameters and network settings.

    That has totally reduced our valuable time.

    How has it helped my organization?

    Currently, the work style of our organization has changed; when we get new projects, we can rapidly handle them.

    What needs improvement?

    If vSAN developed a "unified system" (that can support block + file + object), it would help users a lot in facing hybrid cloud environments.

    I would prefer to use a complete and deep dashboard so I can give a supervisor a way to easily monitor the status of all drives and pool tiers. I think that would be a powerful feature for the future.

    For how long have I used the solution?

    I have used it for two years.

    What do I think about the stability of the solution?

    Stability is great; however, you have to notify your counterparts if the system breaks down. :-D

    What do I think about the scalability of the solution?

    Many popular SDS products can support up to 1000 nodes. This is an area where I hope vSAN is improved.

    How are customer service and technical support?

    Hmmm, the level of technical support depends on the engineer who supports you when you contact the call center.

    Which solution did I use previously and why did I switch?

    Traditional storage is scale-up type, which means there are a lot of supplier limitations and it costs too much.

    Why not break though this situation? Now, flash is getting cheaper and bigger. With the changes mentioned, I think it will just stimulate SDS.

    How was the initial setup?

    Initial setup was very simple for me. It is easy to set up if you get used to using vCenter.

    What's my experience with pricing, setup cost, and licensing?

    SDS is going to be popular and common. If vSAN wants to remain #1 in the market, offering more discounts or something to attract customers is inevitable.

    Which other solutions did I evaluate?

    Currently, our environment is running VMware; therefore, we can consider using original distributed storage that connects directly to the kernel. That would reduce latency and data transfer loss.

    What other advice do I have?

    It is easy to use and rapidly build up.

    Disclosure: My company has a business relationship with this vendor other than being a customer: We are an OEM partner.
    PeerSpot user
    it_user315378 - PeerSpot reviewer
    Works at a university with 1,001-5,000 employees
    Vendor
    It's fast, software designed storage that costs less than an all-flash array. We're expecting some improvements, but at the moment you have to store every object on multiple disks to protect it.

    What is most valuable?

    It's fast – it’s really blazing fast.

    How has it helped my organization?

    It saves us the expense of an all-flash array. All-flash would work for us, but VSAN is cheaper. I think that this solution is really new, but it has real benefits over all-flash arrays.

    What needs improvement?

    We are seeing some improvements coming up, but at the moment you have to store every object on multiple disks to protect it, and they should be better distributed over disks to help parity.

    What do I think about the stability of the solution?

    It's very stable – we have had no failures.

    What do I think about the scalability of the solution?

    It’s really scalable in terms of both capacity and performance, at least for our needs.

    How are customer service and technical support?

    We haven’t had to use it – the product is really stable.

    Which solution did I use previously and why did I switch?

    We were using a traditional storage array from Dell and we will see more VSAN usage in the future.

    How was the initial setup?

    The initial setup was a little bit complicated because we have to do everything from scratch. It’s a new world, and much easier in the newer releases.

    Which other solutions did I evaluate?

    We looked at other vendors – classic storage vendors – but we thought this direction was faster as things are moving towards a software designed storage.

    What other advice do I have?

    I think you should try it – its really stable and valuable and help to drill your costs down.

    Disclosure: I am a real user, and this review is based on my own experience and opinions.
    PeerSpot user
    it_user315789 - PeerSpot reviewer
    Solutions Architect at Sequel Data Systems
    Consultant
    It integrates with other commonly-used VMware tools, but it lacks deduplication and wastes a lot of mass when striping across multiple nodes and vSphere hosts.

    Valuable Features

    Simple to set up, manage, and integrate it with tools you’re already familiar (vCenter, vClient) with.

    It also gives us a policy-based storage on a per-VM level.

    Also if you can apply redundancies to machines, they’re all different.

    Improvements to My Organization

    • All built within hypervisor
    • Easily stood up with hardware you already have
    • Truly virtualized storage
    • Get rid of all hardware, and you get a much smaller footprint
    • Nodes can be in different datacenter, and so can stretch cluster

    Room for Improvement

    • Good job integrating with vRealize, vCOPS, etc.
    • Needs complete integration with vRealize for GUI for drill down analysis
    • Would be nice to see features like dedupe because it wastes a lot of mass when striping across multiple nodes and vSphere hosts.

    Stability Issues

    Some difficulty finding compatible hardware, but if you follow the HCL provided by VMware. and make sure you're buying the correct nodes, storage devices, and SSD’s that are all supported, then it’s a stable product. Even if you have problems, it's still only one phonecall.

    Scalability Issues

    It supports up to 64 nodes so huge scalability.

    Customer Service and Technical Support

    As a VMware customer for many years, sometimes it takes a few calls, but they have some brilliant people who can solve difficult technical problems.

    Initial Setup

    • Setup just a few clicks after hardware all connected, “pretty stupid easy”.
    • Customers can test and validate without going out and buying vSAN ready nodes.

    Other Advice

    It loses points because it lacks lots of performance and deduplication abilities that competitors have.

    Disclosure: My company has a business relationship with this vendor other than being a customer: We're a partner.
    PeerSpot user
    it_user234747 - PeerSpot reviewer
    Practice Manager - Cloud, Automation & DevOps at a tech services company with 501-1,000 employees
    Real User
    VMware I/O Analyser Fling vs. Iometer

    Originally posted at vcdx133.com.

    I previously posted about my “Baby Dragon Triplets” VSAN Home Lab that I recently built. One of the design requirements was to meet 5,000 IOPS @ 4K 50/50 R/W, 100% Random, which from the performance testing below has been met.

    The performance testing was executed with two tools:

    • VMware I/O Analyser Fling – Excellent tool that collects esxtop data as well; if you need fast and easy storage performance testing, keep this in your toolkit.
    • Iometer configured as per the VMware 2M IOPS with VSAN announcement

    Iometer – Test configuration

    Iometer – Results

    VMware I/O Analyser – Test configuration

    VMware I/O Analyser – Results

    Observations

    • The realistic Iometer results were significantly lower compared to the same settings with the VMware I/O Analyser results. This is because the Iometer config was with 8 x 8GB disks and the VMware I/O Analyser was testing with the default 100MB disk. If you use VMware I/O Analyser, make sure you extend the 100MB disk to 8GB (as per User Manual that comes with the Fling). You can see the lower latency due to less parallel I/O over the smaller address space.
    • Due to the small size of workloads, all storage tested was SSD and not SATA. Switching from VSS to VDS with LBT had no improvement on performance. Network Throughput was around 20MB/s for the VSAN VMkernel. The Corsair SSD drive is rated at 85,000 IOPS @ 4K 100% Write 100% Random, so with VM config, CPU, RAM, SSD and Network not being the bottleneck, I suspect it is the Z87 Serial ATA controller (or its ESXi driver) that is the limiting factor (even though it is supposed to support 6Gb/s).
    • I am considering scrapping my ESXi environment to test a single host with Windows Server 2012 and Iometer and then ESXi with SSD (DAS) and Iometer again, just to see if not having VSAN makes a difference.

    Disclosure: I am a real user, and this review is based on my own experience and opinions.
    PeerSpot user
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