It’s a decently mature product that has a lot of documentation and standards and is something to be relied on.
Senior Storage Engineer with 1,001-5,000 employees
It behaves predictably during failure, but it needs better built-in monitoring as Insight is too expensive.
What is most valuable?
How has it helped my organization?
Predictable behavior during failure. In terms of performance, if you have two machines, you know they’re going to perform the same.
What needs improvement?
It needs better built-in monitoring. We can’t afford Insight, and v6.2 seems like it's a purposefully inferior product to make people buy Insight, which is way too expensive.
What do I think about the stability of the solution?
It's not on Cisco’s stability level, but it’s a 96/100.
Buyer's Guide
NetApp FAS Series
May 2025

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What do I think about the scalability of the solution?
It’s scalable, but it could be easier. Just adding shelves might require additional cards and cabling, which can be difficult.
How are customer service and support?
I’m happy with the support, as they’ve been able to solve whatever I throw at them.
How was the initial setup?
It’s complex as there’s a lot of variables involved. Not for the weak-hearted, if you haven’t done it before.
What other advice do I have?
It loses points because of failures.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
System Engineer at a legal firm with 501-1,000 employees
It gives us continuous uptime and we can failover when needed, although sometimes there are bugs with firmware upgrades.
Valuable Features
- Uptime
- Performance
- High Availability
- Disaster Recovery
- NetApp as a company is doing well
Improvements to My Organization
- We can failover when needed.
- In my organization, a law firm, brand recognition is important, and NetApp provides that.
- It gives us continuous uptime.
Room for Improvement
Sometimes there are bugs with firmware upgrades.
Deployment Issues
Not with deployment, but, again, there are sometimes bugs when we perform upgrades.
Stability Issues
It just works, and when some drives go into failure status, it’s just a prediction of drive failure, letting us know when to get the drives replaced.
Scalability Issues
It scales pretty well, and the limit is how much you want to spend on blades, shelves, controllers, etc.
Customer Service and Technical Support
It's pretty good, they're very knowledgable. With other vendors who outsource support, there's difficulty getting knowledgable first-tier support, but with NetApp, that’s different.
Initial Setup
We had help in the installation, which made it straightforward. It was also complex because lots of planning was involved.
Other Advice
It loses points in upgrades from one version to another is not as smooth as it should be. Also, understand your requirements and see how it fits in.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Buyer's Guide
NetApp FAS Series
May 2025

Learn what your peers think about NetApp FAS Series. Get advice and tips from experienced pros sharing their opinions. Updated: May 2025.
857,028 professionals have used our research since 2012.
IT Architect at a aerospace/defense firm with 1,001-5,000 employees
We can give people large amounts of storage for projects, and then remove it, though improvements could be made to the translation between 7-mode and cDOT.
Valuable Features
We have clusters, and can do non-distruptive upgrades with cDOT and can spin up VMs as needed. We have the flexibility to give people NAS storage.
Improvements to My Organization
With NAS storage in general, we can give people large amounts of storage for projects, and then remove it. For example, for SLS, they can spin up large amounts of storage to hold the output of modeling data, and when that’s done, they can delete it and move on. In that case, they don’t need the throughput.
We have thousands and thousands of file shares and we’re able to offer up to one terabyte of storage, and this gives us high compression and dedupe.
Room for Improvement
For cDOT in general, improvements could be made to the little things, such as the translation between 7-mode and cDOT. If there’s some kind of backward compatibility or translation of certain functions from one to the other, that would be an improvement.
Stability Issues
It's very stable.
Scalability Issues
With cDOT, it's very good. It scales horizontally well, but not so well with 7-mode.
Customer Service and Technical Support
It’s top-notch support, very responsive and highly knowledgeable, very attentive to us as we have a monthly meeting with our TAM.
Initial Setup
It's straightforward in 7-mode, but using cDOT, it's terrible.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
IT Infrastructure Architect at a energy/utilities company with 1,001-5,000 employees
We're able to scale out with cDOT, although, depending on the use case, it needs a service catalogue you can walk through without having to use SE.
Valuable Features
- High Availability
- Reliability
Improvements to My Organization
- Reliability
- Performance level
- Great history with it, and over the last two and a half years, it's been etter than others
Room for Improvement
Depending on the use case, it needs a service catalogue you can walk through without having to use SE.
Stability Issues
It's been great, and there's been no issues.
Scalability Issues
With cDOT, it's very easy to scale out, and that's the reason we went with it in the first place.
Customer Service and Technical Support
It's been great, and any issues have been taken care of right away.
Initial Setup
It was very straightforward and easy.
Other Advice
Pick your partner wisely, as they have a lot in your success. Go with someone with a history in FAS. Also, go with vendor that buys reference architecture and follows the methodology.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Chief General Manager at SVC Bank
The controllers are faster so we have more processing efficiency, and we're going onto the cDot platform, which is already an improvement.
Valuable Features
Today we use it for replication of our transaction data, and for storing data, for which we use the snap mirror feature. Primary and disaster recovery storage centers are connected. Snap mirror backup software does block level copy from primary site to the disaster recovery.
Room for Improvement
We’re going onto the cDot platform, which is already an improvement. The controllers are faster so we have more processing efficiency.
Use of Solution
We’ve been using it for the last six years.
Stability Issues
Stability has been very good. As far as we’re concerned, we update our systems (firmware, OS) consistently, so we don’t face any problems in that regard.
Scalability Issues
We've had no problems scaling. Our business has grown two and half times in size over six years, and we’ve added more disks and shelves, as well as upgrading controllers. We’ve done it without any down time.
Customer Service and Technical Support
Quite good. Recently we deployed micro-clusters with cDot, the first bank in India to do it.
Initial Setup
It was complex because we experimented by keeping data and system volumes separate. We don’t replicate the system volumes frequently. We were able to do it, although we used only 1/10 of the bandwidth with a combination of FAS and vSphere.
Other Advice
Configure it properly. Today we have HA with any data loss because we did it nicely, and took our time for the beginning. We got terrific support.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior IT Tech-Architect, Storage at a healthcare company with 1,001-5,000 employees
It's added benefits are thin provisioning, compressioning, and dedupe, which help with capacity utilization.
Valuable Features
Being able to run any flavor of files and block storage. It's easier to manage, and we’re looking to phase out legacy systems and to go with FAS.
Improvements to My Organization
It's easy to manage regardless of how you’re utilizing platform. It’s a Swiss army knife of capabilities. Flexible platform and software features are added benefits (thin provisioning, compressioning, dedupe), which help with capacity utilization. Still get a lot of return even if going with best-practices application.
Room for Improvement
Make sure there’s current centralized virtual desktops. I get caught in the upgrade matrix quite a bit, which is an indication that it hasn’t been tested. Need more currency in IMT.
Stability Issues
It's solid, with occasional issues that surface, but are quickly resolved. No one’s software is perfect.
Scalability Issues
It’s good, but you have to do a lot of homework to scale horizontally and vertically. You need to have sales and engineering to expend effort to do that homework.
Customer Service and Technical Support
We've frequently used it, and the quality will depend on which level of support you purchased. Premium support, I have no complaints as we get the right person who’s knoweldgable. Higher level guys take great deal of personal ownership over issues. I used their support as benchmark for our organization.
Initial Setup
It's easy. The more planning you do, the easier it gets.
Other Advice
The monitoring is key, and you must keep track of what’s going on. Be sure to use auto-support and have strong monitoring scenario in place.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior Systems Administor at a tech vendor with 501-1,000 employees
We are able to increase performance by adding more heads to a cluster, but the free performance monitor doesn’t provide enough information.
Valuable Features
Management, for a person who’s not a storage administrator In a couple of weeks, you can get the basics of createing virtual storage, and carving out chairs and LUNS.
Improvements to My Organization
Doing more with less. I can do multiple protocols, storage efficiency, data protection tool, everything is in one solution/ecosystems. There aren't many vendors who can provide that without adding third party software and apps.
Room for Improvement
Our major issue with FAS was not having one pane of glass with all products attached to it. Other major issue is the free performance monitor doesn’t provide enough information. They want you to buy Insight, which is very expensive.
Stability Issues
It's rock solid.
Scalability Issues
I love cluster ONTAP. Being able to scale out and being able to increase performance by adding more heads to a cluster and being able to do hybrid with regular storage on same platform is huge. You can move out easily too, they provide you the tools to do that, adding a lot of value.
Customer Service and Technical Support
Great, I cannot complain. They’re there with you until problem resolved.
Initial Setup
It's straightforward setup. Depending on how you deploy, full SAN is complex, with NAS not so complex. You have to follow best practices when building out infrastructure. So, it’s not so different than deploying it with other vendors.
Other Advice
With storage, what works for me won’t necessarily work for you. Call your NetApp rep and tell him you want to test the solution. Get it on the floor and beat the hell out of it. Do a very thorough Proof of Concept.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Chief Technology Officer at PTSO
It's highly scalable, especially with CDOT, but they should make it faster and cheaper.
Valuable Features
- Snapshot
- Snapmirror
- FlexClone
Improvements to My Organization
- Huge time savings
- Large storage space savings
- In the end—time and money
Room for Improvement
They should make it faster and cheaper, but it does what we need it to do.
Stability Issues
Good overall. We’ve hit some bugs in the ONTAP code that’s caused it to crash. We’re just coming off of seven-mode, and I'm looking forward to the capabilities of CDOT.
Scalability Issues
It's highly scalable, especially with CDOT. We can scale out quickly.
Customer Service and Technical Support
It's very good, generally first tier are wiling to help us or get us to right person pretty quickly.
Initial Setup
It was complicated. We were coming off an IBM system five years ago. We got help for everything from cabling, terminology, and we had to relearn how we reconfigured storage. We got help from both NetApp and our VAR.
Other Advice
Just do it. Chances are the functionality that comes with the ONTAP software will be better than other products at a similar price.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

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Updated: May 2025
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There is a transition tool that will move the data from 7-mode to CDOT. However, SnapVault relationships cannot be retained when moving from 7-mode to CDOT. This means that multiple copies of the data must be retained until SLA expiration policies allow for it to be deleted (in my case, years). I was speaking specifically about the translation of commands used to admin the system. Commands you knew by heart in 7-mode no longer work in CDOT. There are many things to like about CDOT, which is why we are making the move, but there are many things that don't work as well as they did in 7-mode. For instance, there is no ability to disable NETBIOS over TCP in CDOT and active directory integration is much harder to setup and manage.