Excellent deduplication ratios.
Manager - System Engineering and Storage at a construction company with 1,001-5,000 employees
Excellent deduplication ratios. Overall it did not live up to expectations.
What is most valuable?
How has it helped my organization?
It did not improve the way my organization functions: It was just an alternative method to accomplish what was being done a different way.
What needs improvement?
The UI is rather dated and not intuitive. Also, the setup is rather complex and you need to understand the product to best leverage it.
The GUI has a look from the traditional HP interfaces of 10 years ago. The layout is confusing as it is designed for someone that really understands the underpinnings of StoreOnce. The P6500 is basically a pair of DL380 servers running a Linux distribution clustered with all the necessary hardware and then is presented as a single StoreOnce appliance. Many of the menus in the GUI provide drill down capabilities that can get you deep into the inner workings of the appliance but, unless you know what you are doing, it is more there for support to utilize. While the appliance is a single cluster you are really working with each node individually further complicating management of the device. You need to put some thought into how you will distribute the workload across the nodes because the appliance does not provide any mechanisms for load balancing. While HPE claims StoreOnce will work with CommVault, our experience was that the use case was very narrow. While the P6500 has some beefy hardware the software is the Achilles heel. We found that as the dataset grows the P6500 becomes bogged down in housecleaning tasks that conflict with the incoming workload.
For how long have I used the solution?
3 months.
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HPE StoreOnce
July 2025

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What do I think about the scalability of the solution?
The product did not scale well and had several issues where it bogged down under load. When used with a non HPE backup product, you really need to optimize the StoreOnce and your backup product to work well together.
How are customer service and support?
Support was good, better than average, but left a little room for improvement.
Which solution did I use previously and why did I switch?
We were using native backup (Commvault), which was unreliable. We selected this as a method to improve and better scale our backup deduplication, but it turned out StoreOnce introduced enough inconsistencies and incompatibilities, we actually went back to Commvault’s native deduplication.
How was the initial setup?
You need vendor assistance to get the product properly set up and configured.
What about the implementation team?
Vendors supplied resources for install and initial configuration assistance.
What other advice do I have?
Make sure you understand your use case very well, go over it in detail with the vendor and get commitments that it is compatible with your use case.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

Senior Software Engineer at a tech services company with 1,001-5,000 employees
We can back up our data directly from stores, so it has reduced our expenses.
What is most valuable?
Deduplication and replication are both extremely important for storing huge chunks of data.
Secondly, now it has extended support to VMware and MS SQL via EMC.
How has it helped my organization?
Well, it has improved the organization in the sense we can back up our data into StoreOnce directly from stores etc., so it's become cheaper for us.
What needs improvement?
I would like to see it support open stack and also other vendors’ hardware, if possible, via EMC.
I have an existing EMC backup solution and HPE StoreOnce solution.
Typically this happens in case of M&A between two companies when two different companies use two different storage vendors. Now I want to move my data from EMC to StoreOnce, but I don't have a direct way to move this data. I suggest that if it would offer OpenStack support then we will be able to freely move data across.
For how long have I used the solution?
I have been using it for six months.
What was my experience with deployment of the solution?
I have not really encountered any deployment, stability or scalability issues. We haven’t faced any major issues.
How are customer service and technical support?
HPE technical support is a bit slower compared to EMC, which might have a larger support team that can respond faster.
Which solution did I use previously and why did I switch?
Its deduplication feature and 3PAR support were the primary reasons we selected it.
How was the initial setup?
I didn’t install it, and I was not there while it was getting installed. However, as far as I’ve heard, they didn't face any major issues.
What was our ROI?
Just look into the cost factor if you have some other system already in place. Like, say you already have EMC products, then it's probably better to stick with them.
Disclosure: My company has a business relationship with this vendor other than being a customer. My company is an HPE Platinum Partner.
Buyer's Guide
HPE StoreOnce
July 2025

Learn what your peers think about HPE StoreOnce. Get advice and tips from experienced pros sharing their opinions. Updated: July 2025.
861,490 professionals have used our research since 2012.
Project Manager at a local government with 1,001-5,000 employees
We needed to consolidate a particular aspect of storage but we also wanted to store more data and increase the retention time.
What is most valuable?
The feature we were looking for was deduplication. Now, thanks to Catalyst containers, we have federated deduplication across all our remote sites.
We wanted something that would easily fit in our infrastructure. As we were familiar with HP products, it was very convenient for us to use tools we were used to such as iLO, Insight Manager, and so on.
How has it helped my organization?
Before we used HP StoreOnce, the backup was stored on DAS, which was fine until you have a problem in a disk and lose all your data.
So, we needed to consolidate this particular aspect of storage but we also wanted to store more data and increase the retention time.
The native replication feature allowed us to take it to the next level of consolidation with automated off-site replication. We now have site-level recovery as opposed to the disk-level recovery we had 3 years ago.
What needs improvement?
The product is doing just fine as it is now. An improvement would be an improved deduplication algorithm.
For how long have I used the solution?
We've been using the solution for 3 years now. We added a StoreOnce 4700 unit last year so that we can replicate all the data in our datacenter.
It is something we were thinking about for a long time. The support of Catalyst container by Veeam Backup was the thing that was lacking until last year.
What was my experience with deployment of the solution?
Due to the huge number of sites we have, we needed something easy to deploy. Configuring a new unit is a matter of minutes.
What do I think about the stability of the solution?
I was wondering at the time if we would have to deal with some hardware failure somewhere every other week and it turns out it's a solid solution, we encountered very few problem regarding hardware.
We have a 7/1 deduplication rate, which in our environment is pretty descent.
What do I think about the scalability of the solution?
We're currently using StoreOnce 2620 & 2700 on our 175 remote sites which are replicated on a Storeonce 4700 in our datacenter. The thing that I was afraid of when we chose StoreVirtual was the huge number of sites and therefore the number of StoreOnce units.
When it comes to scalability, expansion shelves are available for all models and HP provides a VSA version of StoreOnce, which is free of charge up to 1TB, so it is satisfying for us.
How are customer service and technical support?
Upgrade first, talk next. If you happen to be out of date regarding FW or patches, then you are the problem and not the unit. Basically, that's how it works at HP.
That being said, we have h+4 SLA on these units and the customer service never failed us so far.
Which solution did I use previously and why did I switch?
Before we started using StoreOnce, every site had its own backup solution and its own storage for it, so we wanted to harmonize all of that. We were looking for a solution which would provide features like deduplication, native replication, ease of use and available on VSA as well.
It turns out StoreOnce was the only solution at the time. We had proposals reflecting different approaches, with different products bundled all together, or single products with a workaround for the one missing feature.
So we evaluated an Avamar grid, as well both physical and VSA. The deduplication rate was higher with Avamar and the replication worked out of the box, but if we wanted to stay in our budget range, we needed to go with a central Avamar grid and VSA on DAS on the remote site.
We went for StoreOnce because we didn't want our backup to rely on the remote site WAN connection and because the local VSA on DAS was not really an improvement.
How was the initial setup?
It was straightforward. The very first unit was configured in 15 minutes and was ready to go.
What about the implementation team?
We have a staff dedicated for that, so that was an in-house job. The StoreOnce unit runs on Linux. We have Linux admins, and it is frustrating for them to see that the product works out of the box and there's no need to log in using SSH.
Therefore, I recommend in-house implementation. It's easy, and the iLO UI is very user-friendly.
What was our ROI?
We don't have financial ROI. Our goal was to consolidate the infrastructure at all cost.
What other advice do I have?
There's a VSA version free of charge up to 1TB, so just try it.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Systems Engineer at CHEOPS TECHNOLOGY
For performance, it is better than VTL or NAS configs, and it provides total integration with HPE storage and backup solutions.
Valuable Features
Catalyst functionality: for performance, it is better than VTL or NAS configs, and it provides total integration with HPE storage and backup solutions (3PAR, Data Protector, VM Explorer, and so on), and also integration with NetApp, Symantec (NBU/BE), and Veeam with the Catalyst plugin.
The special plugins developed with Oracle RMAN, MS-SQL for direct backup from these application systems to StoreOnce.
Improvements to My Organization
It reduces backup time and reduces storage space requirements, compared to non-deduplicated systems.
It reduces the amount of time it takes to recover data from storage compared to tapes.
It is easy to deploy and configure.
Use of Solution
Deployment / config / install experience: 3 years.
Deployment Issues
Not especially.
Customer Service and Technical Support
Good.
Initial Setup
Initial setup is simpler because all of the tasks can be done from GUI whereas before it was from the CLI.
Other Advice
HPE backup systems are very good products. Easy to manage, very good performance, with a lot of ongoing new development. Good integration with many backup or storage products.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
IT Systems Administrator with 1,001-5,000 employees
Using virtual tapes, we have accelerated backup and recovery of our solutions.
Improvements to My Organization
Using virtual tapes, we can accelerate the backup/recovery of our solutions.
Room for Improvement
The CIFS share service performance is really poor; it is a nightmare. Instead of CIFS we prefer to use NFS.
When presenting CIFS shares to Linux hosts and I tried copying a huge quantity of files, performance was so slow, terribly slow... This was not an issue when I used NFS. Fortunately, I'm not the only one with this problem: http://www.v-strange.de/index.php/hardware/14-cifs-performance-problem-on-hp-storeonce-systems. Fortunately, too, it seems to be a firmware matter. I'll be looking to solve that problem.
Use of Solution
I have been using it for 14 months.
Deployment Issues
I have not encountered any deployment or scalability issues. The product is really stable.
Customer Service and Technical Support
Technical support is great! No problem; fast solutions.
Initial Setup
Initial setup was so easy, really easy.
Implementation Team
We implemented it through a vendor; it was a smooth deployment.
Pricing, Setup Cost and Licensing
To be honest, the product is expensive to acquire and costs have been growing since then.
Other Solutions Considered
It is at the top of its class, in my experience.
Other Advice
It's a great product but it is really expensive. Expanding its capacities is sometimes more expensive than buying new storage.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Head of Technology Services at GMD S.A.
It is possible to use Ethernet and Fabric at the same time with the same device.
What is most valuable?
The Catalyst Store with Data Protector:
- It is possible to use Ethernet and Fabric at the same time with the same device.
- The configuration of Data Protector is easy.
- The media administration in Data Protector was simplified.
- The recovery of the cell manager in a disaster is more easy.
- It is possible to see the information of backup task in the StoreOnce device; before that, this information was only in the Data Protector database.
How has it helped my organization?
We implemented Catalyst with Data Protector in March 2016; after the change, the recovery process time of one or two days was reduced to 30 minutes in most of cases.
What needs improvement?
I think the integration with Data Protector and virtual environments is an area for improvement.
For how long have I used the solution?
I have been using it for five months.
What do I think about the stability of the solution?
I did not encounter any stability issues.
What do I think about the scalability of the solution?
I have not yet encountered any scalability issues.
How are customer service and technical support?
I think that technical support is a weak point. I feel that technical support does not know the product. The call center is prepared to support a hardware error, but when we have any doubts regarding a new configuration, they have the same doubts. In this case, we need to contact some friends at HPE.
Which solution did I use previously and why did I switch?
We previously used the same StoreOnce, but without Catalyst. Catalyst is the sum of NFS plus SAN disk in the same backup repository.
How was the initial setup?
Configuration is very simple; the problem was changing the minds of the operators.
What's my experience with pricing, setup cost, and licensing?
For a small configuration, it is expensive, but if you need to backup many servers with a lot of data, I think it is a good price.
Which other solutions did I evaluate?
I evaluated EMC before choosing this product.
Disclosure: My company has a business relationship with this vendor other than being a customer. My company is an HPE partner.
Senior Security Analyst at a tech services company with 51-200 employees
Compression and replication are the features of this product that are the most valuable to me.
What is most valuable?
Compression and replication are the features of this product that are the most valuable to me.
How has it helped my organization?
We moved from MSL and VSL, building a number of virtual libraries with different LTO formats and removing hundreds of physical tapes that we replaces with virtual replicated tapes.
What needs improvement?
I would like to see improvements regarding segmentation or the size limitations per library.
For how long have I used the solution?
I have used this solution for 15 months.
What was my experience with deployment of the solution?
Segmentation was one of the requirements. The HP team promised us that it is possible, but it wasn't available.
How are customer service and technical support?
Technical support is excellent.
Which solution did I use previously and why did I switch?
We previously used MSL and VSL, and we moved to this product because it supports virtualization (D2D).
How was the initial setup?
Initial setup was very simple.
What about the implementation team?
We implemented it in-house. I think the solution was easy to implement using HP Data Protector 8.01 at the beginning. The tricky part is the upgrades. I recommend upgrading the FW to latest the stable release before configuring.
What's my experience with pricing, setup cost, and licensing?
The price is good.
If you are going to replicate, buy the two-way license.
What other advice do I have?
I recommend this product.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
It limits the amount of storage that we have to purchase. My biggest irk is the people who will be managing these things are going to be more your system administrators. They're not Java programmers.
What is most valuable?
Compression of storage. Based on the amount of history that we've got to keep, it limits the amount of storage that we have to purchase.
How has it helped my organization?
It's more of a backup functionality. Backup really doesn't make a business do any better or any worse. It's really just storage of data. It's not a user interactive type process. They all go through and store data fine and they all go through and restore data fine. Is there really any business advantage of StoreOnce over some of the other vendors? Not really. It's just that we chose to work more with one vendor, so we get a better cost when we actually purchase stuff.
What needs improvement?
The beef I have not only with StoreOnce, but also all the Ops Bridge, the people who will be managing these things are going to be more your system administrators. They're not Java programmers. They want to try to do all the API's where people have to know Java to interface with them.
Whereas system administrators, they want to script stuff and so they're starting to turn a lot of their API's into command lines, which are wrappers around the Java API's. Lack of foresight of that is probably one of my biggest irks with HP on that.
What do I think about the stability of the solution?
I have no data on it as it's too soon in our use.
Which solution did I use previously and why did I switch?
We've used NetBackup, then there's been some home-grown ones that people have done. StoreOnce is a backup solution with Data Protector in DDD and streaming through offsite storage. It works just fine. The big thing again, we come down to, is by having those products primarily with one vendor, we get a much better cost point.
How was the initial setup?
We had no issues deploying it.
What other advice do I have?
It works well with Data Protector. It works well with 3PAR and that's our environment and so it's a vendor specified solution.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

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Updated: July 2025
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