- Redundancy
- Snap mirroring
- Home-drive capability, which looks at a user name and gives the correct rights to folder
Director of IT Infrastructure at a financial services firm with 501-1,000 employees
It provides us with redundancy and security, which is important because we hold a lot of customer information that must be secure and reliable.
What is most valuable?
How has it helped my organization?
- Rendundancy
- Security
We hold a lot of information for our customers, so the information has to be secure and reliable.
What needs improvement?
I'm not sure, because every time I’ve gone to them, they’ve said “yes, we can do that.”
What do I think about the stability of the solution?
I sleep well at night because of its redundancy. I hardly even know when it has a bad drive. The Call Home capability sends a message automatically if there's a bad drive to NetApp who then sends a new drive.
Buyer's Guide
NetApp FAS Series
May 2025

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What do I think about the scalability of the solution?
Amazing how scalable it is. As a comparison, we looked at EMC vBlock as well, and if you want to upgrade, you have to use a forklift. With FAS, you just put in new shelves or heads.
How are customer service and support?
They’re extremely technical. Everyone I’ve talked to has been very knowledgeable, and I can’t say anything bad.
How was the initial setup?
It was complex. There's a lot to do, but I had their assistance and went through everything step by step. So while complex, it was also simple.
What other advice do I have?
One thing that burned me, is that it surprised me how much overhead it uses, like 30% right off the top. So don’t forget the overhead. It’s not usable space, but that percentage is coming down. It all has to do with deduplication.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
IT Analyst at a local government with 501-1,000 employees
You can run a smaller aggregate with SSDs in the flash pool.
What is most valuable?
It takes your standard IOPS in your drives and it gives you much greater performance out of that aggregate. You can run a smaller aggregate with SSDs in the flash pool, and it'll give you the IOPS of many more spindles. What it does is it brings your SATA disks aggregate up to the SAS speed, depending upon how many spindles you're running, and your SAS aggregates perform much better.
How has it helped my organization?
We had an IOPS problem earlier. We were running Citrix and we were having boot storms. Part of the problem was the aggregates that we had were too small. The boot storm would basically fill up the NVRAM. It was unable to write to disk because the disks were running full. The problem was solved by going to flash pools. It was great.
What needs improvement?
I have not given the FAS a perfect rating because the All Flash Array is probably going to beat it down, in terms of performance.
I would give it a perfect rating if there wasn’t any ceiling. When you have some systems and you increase your disk IOPS by adding either All Flash Array or you add a flash pool, sometimes you move the bottleneck; you move the bottleneck up to the CPU. We did have that problem briefly. That was solved by basically moving some of the workload. That happened one time and we fixed it.
By moving to cluster mode, it's going to be a lot easier to move the workload. We are moving in that direction. We're doing the first assessment and planning right now.
What do I think about the stability of the solution?
We do not have any stability problems, whatsoever.
What do I think about the scalability of the solution?
NetApp aggregates are scalable. You can keep adding shelves.
How are customer service and technical support?
Technical support is very good. I've never had a problem.
Usually the problem is being able to hear them in our data center. :)
Which solution did I use previously and why did I switch?
I did not previously use a different solution. When I started working with the county, they already had the NetApp FAS.
What other advice do I have?
Go with NetApp; I haven't had a problem with it.
The most important criteria for me when selecting a vendor to work with are reliability and, for technical support, being there.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
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.
851,823 professionals have used our research since 2012.
Database Manager at Wilson Trailer
Since updating to Dynamix AX 2012, not a week has gone by that we haven’t fired up a clone to test a user, code, etc.
Valuable Features
- Clone – we updated to Dynamix AX 2012, and not a week has gone by that we haven’t fired up a clone to test a user, code, etc.
- Disaster Recovery suite of functions
- Quick backups that don’t impact system
- Refreshes test environments quickly
Improvements to My Organization
- Reliability – hardware performs well, we’ve never had problems
- Great support from Sirius
- We’re able to recover a file if we need to
Room for Improvement
We use mirroring a lot, and if it had snap manager for SQL included, we could do that from one location.
Stability Issues
Rock solid. I’ve been at Wilson for three years and have also used it before at another company. We have a disk go out every once in a while, but no issue with FAS.
Scalability Issues
In the last growth, we went from a 3250 to an 8020. We’ve set it up to grow out easily by just adding trays.
Customer Service and Technical Support
Lately, a little slow to respond, but once you get someone, they’re very knowledgeable, although I haven’t had to use it a lot.
Initial Setup
I was familiar with 3250’s from another company, so I knew how to use the software, but Sirius helped us. So in that regard, it was straightforward.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
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: I am a real user, and this review is based on my own experience and opinions.
IT Manager at a tech services company with 201-500 employees
Overall useful features, highly stable for production, and effective high-density volume services
Pros and Cons
- "I have found all the features useful in NetApp FAS Series."
- "We are not able to connect to the support of NetApp from Sudan. We have to go through many agents for support, which makes it difficult."
What is our primary use case?
I use NetApp FAS Series for servers. I have a lot of virtual servers connected through it using a Brocade switch.
What is most valuable?
I have found all the features useful in NetApp FAS Series.
For how long have I used the solution?
I have been using NetApp FAS Series for approximately eight years.
What do I think about the stability of the solution?
The solution is highly stable.
NetApp FAS Series is stable in production storage and for the high-density volume services.
What do I think about the scalability of the solution?
NetApp FAS Series is scalable.
We have approximately 500 users that use this solution in my organization.
We use NetApp FAS Series extensively in our organization and plan to upgrade it for SSD to be faster. We are running our production server on this storage and we use it every second of the day.
How are customer service and support?
We are not able to connect to the support of NetApp from Sudan. We have to go through many agents for support, which makes it difficult.
Which solution did I use previously and why did I switch?
We previously used NAS storage and it was not stable.
How was the initial setup?
NetApp FAS Series is very expensive for us here in Sudan because we cannot purchase it from the vendor directly.
What about the implementation team?
We have three or four people that do maintenance and support of NetApp FAS Series.
What's my experience with pricing, setup cost, and licensing?
It is a one-time license charge for NetApp FAS Series to run and we pay annually for upgrades and support.
What other advice do I have?
I rate NetApp FAS Series a ten out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Cloud Plattform Architect at a tech services company with 10,001+ employees
Integrated snapshot and backup capability
Pros and Cons
- "It has integrated snapshot and backup capability."
- "Needs to improve the adaptive storage quality of service."
What is our primary use case?
NAS part of standardized virtualization platform, ranging from size from 15TB on-site solution to more than 500TB twin core datacenter.
How has it helped my organization?
- Cost effective storage for all performance levels (including all-flash)
- Integrated snapshot and backup capability
- Many protocols
- Good service
What is most valuable?
- Integrated backup functionality (SnapVault and SnapMirror)
- Option to mirror synchronously
What needs improvement?
- Automation readiness
- API exposure
- Adaptive storage quality of service
For how long have I used the solution?
Three to five years.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Product Owner Storage at a tech services company with 10,001+ employees
We are an online hotel reservations company, so if our website goes down we lose money at a very high rate per minute. It has been many years since we have had an outage due to storage because of FAS.
Valuable Features
- Reliability
- Snapshots
- Ease of tooling
- Integration with our systems
- It's multiprotocol
Improvements to My Organization
We are an online hotel reservations company, so if our website goes down we lose money at a very high rate per minute. It has been many years since we have had an outage due to storage because of FAS.
Room for Improvement
The performance needs to be improved. Due to the performance issues, we're moving to NetApp Flash FAS as it provides almost infinite performance.
Use of Solution
We've used it for nine years.
Deployment Issues
We've had no issues with deployment.
Stability Issues
The stability is excellent.
Scalability Issues
It's scaled well for us.
Customer Service and Technical Support
It takes a long time to resolve most cases. It requires an extensive amount of troubleshooting and tends to be very time consuming on our end in terms of collecting data for the engineers to work on.
Initial Setup
It's straightforward. I'd say, though, that it's medium complexity because it is not done in one day.
Implementation Team
We used a mixed team of in-house and vendor personnel.
ROI
I wouldn't know how to begin to calculate it.
Other Solutions Considered
That was a long time before I joined the company.
Other Advice
Do your research on clustered Data ONTAP as it is a very complicated product, much more complicated than the previous version.
Disclosure: My company has a business relationship with this vendor other than being a customer: I used to work for NetApp as a consultant.
Double-parity RAID guarantees that our data stays intact
Pros and Cons
- "One of the most valuable features offered is double-parity RAID, which guarantees that your data will stay intact. We're also able to provision storage and monitor which ones are really consuming storage."
- "It lacks automatic tiering, When you use data, some of it goes cold. It is not hot data, so the system should automatically move that data to the SATA, while the hot data is kept on tier-one, the SaaS or SSD drives."
What is our primary use case?
The primary use case is for regular databases and file systems. So far it has been good. The performance is solid, it's robust, availability is solid.
How has it helped my organization?
We're able to keep data for a longer time because we are able to manage it well using the features that NetApp provides. It has also helped us to quickly deploy our test environment and finish all of our testing before we deploy on the customer side or the customer systems. It has really helped in our operations and our productivity.
What is most valuable?
One of the most valuable features offered is double-parity RAID, which guarantees that your data will stay intact. You can experience two disk failures and still be up. Another feature is the deduplication. It saves a lot of space. We're also able to provision storage and monitor which ones are really consuming storage.
What needs improvement?
I want to see the system automatically tier; we call it auto-tiering. When you use data, some of it goes cold. It is not hot data, so the system should automatically move that data to the SATA, while the hot data is kept on tier-one, the SaaS or SSD drives.
For how long have I used the solution?
More than five years.
What do I think about the stability of the solution?
The stability is solid. You can go over 3,000 days without a reboot or any downtime. It's so stable.
What do I think about the scalability of the solution?
The scalability is also good. You can scale on the fly, just connect the cables. If you're adding a controller or you're adding big shelves, it's easy to move. It's excellent.
How are customer service and technical support?
I'll give technical support a "good" rating because sometimes it's slow in getting people to respond, other times it's okay.
Which solution did I use previously and why did I switch?
When I arrived at the company they were using NetApp, and we are still using NetApp.
When selecting a vendor, I first look at how robust the solution is that they're proposing, and how available they are to answer calls if there are any issues. This is very critical. The robustness of the solution and the availability of the vendor to attend to queries are important components of my selection criteria. After-sales support is also very key.
How was the initial setup?
The initial configuration is very straightforward. You just cable up your system, power up, connect your power cables, connect to the console, boot up the system, do your system configuration, IP configuration, and all the other configurations, and the system is up and good to run.
What other advice do I have?
If I were to advise someone researching NetApp FAS Storage or a similar solution, I would want to understand what they really want. I would advise them to go with NetApp because it's unified storage. It supports both NAS and SAN environments, so whether you're doing block storage or you're doing file storage, it is a good solution. Also, the operating system that it runs is called Data ONTAP, and is cloud-ready, so in the future the file storage that you have can be deployed to the cloud.
I rate this solution a 9.9 out of 10 because it's never failed me so I'm very comfortable with it.
Disclosure: I am a real user, and this review is based on my own experience and opinions.

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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.