The valuable features for us are the extra add-ons, such as the FIM provisioning, the compression, the disaster recovery capabilities, and the storage pooling functions.
Systems Engineer at a tech vendor with 11-50 employees
Valuable features include compression, disaster recovery, and storage pooling functions.
Pros and Cons
- "The valuable features for us are the extra add-ons, such as the FIM provisioning, the compression, the disaster recovery capabilities, and the storage pooling functions."
- "AHV is Acropolis Hypervisor – A relatively new Hypervisor, robust and stable as VMware vSphere, has built-in advanced analytics and powerful operations, Self Service Portal and components for DevOps included, managed by a single pane of glass (Prism) via HTML5 and it is free of charge – That is why Nutanix is so advanced and revolutionary."
What is most valuable?
How has it helped my organization?
Most of my customers love it because it's easy to use and easy to manage. They can get their applications up and running very fast. They can buy it at a good price.
What needs improvement?
I would like to see the connection to cloud service providers, although I think that's already there. There's not much more that I can tell you. There are some issues on a firmware level. It's not very transparent. The option to connect to a Cloud storage provider seems to be available but there is not much detail on how it's implemented.
As a field engineer I’m used to how the systems work. Some customers however have expressed to me , well for lack of better word “anxiety” at not being able to see more of what goes on in the background (as an option). They would like a more detailed progress of the firmware upgrade process. (i.e. NVRAM,controller, etc…).
AHV is Acropolis Hypervisor – A relatively new Hypervisor, robust and stable as VMware vSphere, has built-in advanced analytics and powerful operations, Self Service Portal and components for DevOps included, managed by a single pane of glass (Prism) via HTML5 and it is free of charge – That is why Nutanix is so advanced and revolutionary.
The challenge here is in order to replace massively Install base of VMware vSphere they need to expand their ecosystem with ISVs (i.e. F5, PaloAlto, Citrix, TrendMicro etc.) to provide a wider range of solutions running as a virtual appliance (vApp) just like VMware did years ago.
Currently there is an ecosystem but I think it is around 30-40 providers.
What do I think about the stability of the solution?
So far, it's been a very stable platform. There have been some issues lately with some bad codes, but for the most part, it's been very stable. It is something that I can recommend at any time.
Buyer's Guide
IBM FlashSystem
January 2026
Learn what your peers think about IBM FlashSystem. Get advice and tips from experienced pros sharing their opinions. Updated: January 2026.
881,733 professionals have used our research since 2012.
What do I think about the scalability of the solution?
Scalability has improved so far. It seems like every year there are more and more expansion added to that.
How are customer service and support?
I have used the technical support and so far it has been very good. The response was a little bit lacking last year, but it looks like it's been improving.
What other advice do I have?
Just buy it. Support for sure is important when considering which vendor to go for, as well as ease of use and the track record of the code base.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Storage Administrator at a government with 1,001-5,000 employees
The most valuables features are the virtualization of the storage and the compression.
Pros and Cons
- "The most valuable features are, of course, the virtualization of the storage, the performance, and the compression."
- "With regards to the IBM V7000 storage system, where we have multiple tiers of storage, a heat map would show I/O distribution across the tiers of storage."
How has it helped my organization?
The benefit to our organization is primarily the capacity savings. It compresses the data so we can see something like a four to one compression.
What is most valuable?
The most valuable features are, of course, the virtualization of the storage, the performance, and the compression.
What needs improvement?
With regards to the IBM V7000 storage system, where we have multiple tiers of storage, a heat map would show I/O distribution across the tiers of storage. I'd like to see some type of heat map reporting on the management console. It would be nice to see something like that. It may already be in the new release, but I'm not sure. The current release may have that already.
What do I think about the stability of the solution?
We had no major issues with stability. It's pretty stable.
What do I think about the scalability of the solution?
We actually upgraded it, adding expansion shelves. It was fairly simple.
How is customer service and technical support?
I can't remember what I called the technical support for. Generally, I think their support gets the job done. It's sufficient. We have a premium support account with IBM, so we have a dedicated support person to help us get it through.
How was the initial setup?
I was involved in the initial setup, but we had a business partner that did the actual physical connections. I helped with some of the configurations. It was pretty straightforward.
Which other solutions did I evaluate?
Our shop historically had been an EMC shop. We had the IBM storage put in just a couple of years ago. I believe management brought it in based on price, in order to get price competition between the vendors. We were primarily looking at considerations of cost, reliability, and customer service.
What other advice do I have?
I would just tell them to give it a try. Benchmark it and compare it with the other vendors. Talk to some customers about their experiences.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Buyer's Guide
IBM FlashSystem
January 2026
Learn what your peers think about IBM FlashSystem. Get advice and tips from experienced pros sharing their opinions. Updated: January 2026.
881,733 professionals have used our research since 2012.
Systems integrator at a government with 5,001-10,000 employees
It allows our organization to provide a more timely response to our customers.
Pros and Cons
- "The speed of the unit is its best feature. It performs very well."
- "I would like to see bigger modules."
How has it helped my organization?
It allows our organization to provide a more timely response to our customers.
What is most valuable?
The speed of the unit is its best feature. It performs very well.
What needs improvement?
I would like to see bigger modules. That's about the only thing that needs improvement.
What do I think about the stability of the solution?
So far, it's been very stable. There have been no issues.
What do I think about the scalability of the solution?
It is very scalable.
How are customer service and technical support?
I have used technical support and they have been very good.
Which solution did I use previously and why did I switch?
We were having performance issues. We decided to find the lowest latency device and this was it.
How was the initial setup?
I was involved in the initial setup and it was very straightforward.
Which other solutions did I evaluate?
We only evaluated EMC. This was a better performing product.
What other advice do I have?
This is probably the best unit you're going to find out there.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Programmer Analysts at a government with 1,001-5,000 employees
We migrated from EMC storage and it was virtualized.
What is most valuable?
It was quite easy to migrate from EMC storage because everything is virtualized. Easy Tier is quite nice to use.
How has it helped my organization?
We're a public sector organization. One of the benefits was that it was the lowest bid for us. It basically came down to cost.
What needs improvement?
I had wish lists, but I found out that they have already been completed.
At our current code level, when I extend any volume that is using Metro Mirror, I have to remove the Metro Mirror relationship. Once the Metro Mirror relationship is removed, I can extend the volumes and I have to re-create the Metro Mirror relationship and sync the entire volume.
For example, if I have a 1TB volume and I want to extend to 1.5TB instead of 0.5TB being replicated using Metro Mirror, 1.5TB has to be replicated.
The next version will include an update for this problem.
What do I think about the stability of the solution?
Stability has been good. We haven't had any issues, besides those that were our own fault when we pushed the work loads too high.
What do I think about the scalability of the solution?
Scalability is quite easy. We've been expanding pretty much every year.
How are customer service and technical support?
We have always used support. We have a main contact person, and he's a really good technical resource.
Which solution did I use previously and why did I switch?
We don't really have a choice of vendors because we are public sector. To me, it's history. Our trusted partner is Horizon, and they're great people to work with. When I work with someone else, I'm not sure if they can deliver what I want. But Horizon goes the whole nine yards.
How was the initial setup?
I was not initially involved in the setup. I was tasked with other projects at the time.
What other advice do I have?
If cost is not a factor, I would definitely say IBM is good. Their business partners are good. For instance, they will try to get you vouchers to get training. With EMC, we never really got any training. It was all a cost for us in the public sector. We have to evaluate what training we can take, because I have a jack-of-all-trades type of role.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Enterprise Architect at a tech services company with 11-50 employees
It virtualizes storage and provides thin provisioning and compression.
What is most valuable?
The most valuable features are the ability to virtualize other storage behind it, thin provisioning, compression, and flash systems.
How has it helped my organization?
The benefit of the product is the ease-of-management. It has significantly reduced the IT operation costs to our organization.
What needs improvement?
I don’t really have a feature that I’d be using. Other storage technologies such as 3D drives or 3D flash would be cool to see, but for the users who I’m selling to, I don’t have this to offer. I don’t think that there is any improvement required.
What do I think about the stability of the solution?
Stability has been excellent and we never had any problems.
What do I think about the scalability of the solution?
It’s massively scalable, so I’ll never run into that problem.
How are customer service and technical support?
I have used tech support and they are excellent. They always have an answer for me.
Which solution did I use previously and why did I switch?
When selecting a vendor, the support mechanism and the reliability are the most important elements.
How was the initial setup?
I was not involved in the initial setup. I have done it for other clients, and it’s very straightforward to set up and use.
What other advice do I have?
Take it for a test drive. You’ll be impressed.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Enterprise Architect at a tech services company with 11-50 employees
The biggest benefit is the latency. It increases the speed of block storage.
Pros and Cons
- "The speed and the ease of installation are the most valuable features."
- "I would like to have a larger disk. Right now, you can get 57 terabytes in a shelf. Once they get the larger disk and you get larger capacities, it'll be even better."
How has it helped my organization?
The biggest benefit is the latency. It is so low that it's going to increase your transactions for transactional data. It's going to increase the speed of any block storage on which you're trying to get low latency.
What is most valuable?
The speed and the ease of installation are the most valuable features. The IBM FlashSystem is the fastest in the industry. You can add it to their other products, such as IBM SAN Volume Controller, and virtualize it. It's a flexible system that you can use purely for speed, where you can add it to a SAN Volume Controller and use Easy Tier to speed up all your disks.
What needs improvement?
I'm not sure that I want to see any additional features. I like the way they have it. It's simple. It gives you the low latency that you need, so I'm not sure if there are any features that I would be looking for.
I would like to have a larger disk. Right now, you can get 57 terabytes in a shelf. Once they get the larger disk and you get larger capacities, it'll be even better.
To be more specific: The FlashSystem 900 is perfect for providing pure speed and low latency. I am happy that the product doesn’t have Storage efficiencies built into it natively. You can Virtualize the FS900 with the IBM Storwize family and gain storage efficiencies when needed. Today the largest FS900 MicroLatency module is 5.7TB or 57TB per shelf. It will be great when the larger MicroLatency modules are realesed to provide density.
What do I think about the stability of the solution?
It's been a great product. As they increase the firmware codes and add new enhancements, it just becomes more stable.
What do I think about the scalability of the solution?
It's a good, scalable product with which you can scale out. And you can add it to virtualization. Whether it's a V9000 or you add it to an SVC, it becomes even more scalable.
How are customer service and technical support?
I have not used technical support.
Which solution did I use previously and why did I switch?
I actually performed a PoC of multiple flash system products and found IBM FlashSystem to be the fastest one out there.
How was the initial setup?
I was involved in many initial setups. That's part of my job to do post-sales installation. So I've done it for several companies. It's very simple and straightforward.
Which other solutions did I evaluate?
We looked at Pure Storage and EMC XtremIO. We chose the IBM FlashSystem because it performed the best in the PoC.
What other advice do I have?
If they:
- Have to choose from what's out there in the industry
- Are looking for storage efficiencies where they're going to get deduplication and compression
- Are looking for pure speed
Then the IBM FlashSystem is the way to go.
If they need efficiencies, like compression and deduplication, then they need to look at the IBM A9000.
Support is the most important thing when looking at vendors.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Network Engineer at a tech services company with 11-50 employees
You can run it on several different configurations.
What is most valuable?
The ease-of-use and ease-of-setup are the most valuable features. You can get one up and running in a couple hours. I do it quite frequently for customers. The simplicity of it is the big benefit for me, compared to some others that I've used.
How has it helped my organization?
A lot of features are beneficial. It's a robust solution from my standpoint. We've got it running on several different configurations. You've got tiering and a lot of nice features to have in today's world. You can put flash in them. It is a good system to use.
What needs improvement?
As far as for what we use it for, they have got it spot on for our market. I'm sure others might have some additions, but our market is more in the SNB space. It is everything we've ever needed.
With the latest releases of software, it's pretty robust. They've pretty well nailed it. I don't see any further weaknesses with the interfaces or anything.
What do I think about the stability of the solution?
I have not had any real issues. I think it is very stable. We have not had any outages or any unexpected issues. I would say it’s very stable.
What do I think about the scalability of the solution?
It is definitely very easy to scale. It's like everybody says, "plug and play". It just works.
How are customer service and technical support?
Technical support is very good.
Which solution did I use previously and why did I switch?
We had a few customer requests for it. I attended conferences and they showed me that they have really put a lot of time and effort into this. It's a good solution. It was worth our time to push it for our customers.
How was the initial setup?
The initial setup was very straightforward.
Which other solutions did I evaluate?
We did not look at other vendors. We are a business partner for IBM on the storage side. Primarily, they're the only game we mess around with.
What other advice do I have?
Definitely give it your time. Give it your time, get some IBM folks to show you some benefits and maybe do a demo. It's a great solution.
Disclosure: My company has a business relationship with this vendor other than being a customer. We are a business partner for IBM on the storage side.
Storage Engineer at a financial services firm with 10,001+ employees
You don't need to buy hardware solutions that are vendor-bound.
What is most valuable?
It is software defined.
How has it helped my organization?
It's flexible. You don't need to buy big hardware solutions that are vendor-bound. It's one of the first, fully software-defined solutions on the market available. It's actually built in-house, so it's very robust, tested, and it works right.
What needs improvement?
I would like it to be more scalable.
What do I think about the stability of the solution?
It's very stable.
What do I think about the scalability of the solution?
It's not extremely scalable as of today. There are certain limits of the hardware that it runs on. Essentially, it does provide for medium to large enterprises in a single appliance solution.
How are customer service and technical support?
I have used support and it needs improvement. I don't like the way that levels of support are organized. Level-1 never provides any support anymore. It just relays communication to the actual Level-2 support. Level-1 support barely understands the problem at first.
Which solution did I use previously and why did I switch?
It's been well established in the market for probably over 10 or 11 years now. This was one of the first solutions available.
How was the initial setup?
The setup was straightforward.
Which other solutions did I evaluate?
We are open to competitive market solutions, but a single vendor solution is something that definitely makes sense for our enterprise.
What other advice do I have?
When looking for a vendor, support is important, as well as market position.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Buyer's Guide
Download our free IBM FlashSystem Report and get advice and tips from experienced pros
sharing their opinions.
Updated: January 2026
Popular Comparisons
Dell PowerStore
Pure FlashArray X NVMe
Pure Storage FlashBlade
NetApp AFF
Pure Storage FlashArray
Dell PowerScale (Isilon)
HPE Alletra Storage
Dell Unity XT
NetApp FAS Series
VAST Data
Hitachi Virtual Storage Platform
Dell PowerMax
HPE 3PAR StoreServ
Huawei OceanStor Dorado
HPE Primera
Buyer's Guide
Download our free IBM FlashSystem Report and get advice and tips from experienced pros
sharing their opinions.
Quick Links
Learn More: Questions:
- Other solutions comparable to IBM FlashSystem with regard to performance?
- When it comes to performance and pricing, what is the biggest difference between Dell EMC Unity and IBM FlashSystem?
- Which SAN product would you choose: IBM FlashSystem (FS9500) vs PureFlash Array/X NVMe vs PureFlash Array/XL NVMe?
- When evaluating NAS, what aspect do you think is the most important to look for?
- EMC Isilon vs. Sonexion Scale-out Lustre Storage System
- What is the difference between NAS and SAN storage?
- What are the top 8 Network Attached Storage (NAS) devices?
- What advice do you have for people considering NAS storage?
- What is the best way to migrate shares from Windows Cluster Server to Cohesity?
- Why is NAS important for companies?








