Zerto Reviews

The two key features for AssureStor are hypervisor based replication and the automation for failover, testing and failback.

As a cloud service provider we are always looking at how we can reduce risk for our customers, the ability to provide a DR service that delivers RPO’s typically as low as 15 seconds, over relatively slow connections is fantastic. And as the replication is performed at the hypervisor level we can protect any virtual (VMware or Hyper-V) environment without worry about the storage layer. The automation element is also a crucial element as it ensures we do not have to spend lots of man hours in the event of a DR failover request, as well as streamlining the ability to test the DR environment without needing any down-time of the production environment. And finally add in the ability to automatically reverse replication once you have failed over allowing you to re-seed the production site and failback with minimal downtime and you have a great all-round DR solution.

Before we took on Zerto our DRaaS offering was based on snapshot based backup’s with an automated restore process to our cloud hypervisors. This was a good service but we could only offer RPO’s as low as 1 hour and even then this was subject to caveats specifically around the size of the VM and how quickly we could ship the new data to our cloud platform. In addition, testing was much more cumbersome and meant a much higher number of hours had to be invested in every DR test, ultimately raising our costs. With Zerto in place we are now offering commercially sound services to small and large businesses without the worry of needing to invest in large numbers of staff to manage and perform testing, etc.

Backup capability as it is limited and not as streamlined as it could be. At present Zerto delivers backup protection by making duplicate copies of VM disks to a defined storage location (but this is limited on the schedule and retention). In the latest version 4.5 this has now been extended with the capability to do object level recovery from the replicated VMs, the caveat here is that the retention period is limited to the journal retention (which is a maximum of 14 days). I would like to see a more integrated backup/retention capability in the solution allowing more flexible scheduling and unlimited retention with the capability to easily restore objects using the one Zerto web interface. The backup images should be able to be stored off-site, away from the main replication site, and easily be reintegrated in the main DR platform if needed for VM recovery of an old image.

I've been using it for 18 months. v4.5 for the last four weeks, and prior to that we ran v4.0 since our initial deployment.

When we first deployed Zerto we didn’t understand some of the limitations around the built-in database (it uses SQLite). Whilst this would normally be fine for most small to medium deployments (the database is supported for up to 100 protected VMs and 4 sites), as a cloud provider we needed to have greater scalability. This is provided by using a full deployment of Microsoft SQL, thankfully Zerto have a tool that will migrate the SQLite DB into your Microsoft SQL server so the transfer is pain free, but I would make sure that anyone who is deploying in an environment that may have more than 100 VMs to deploy initially on Microsoft SQL. Another area to be aware of in scalability is not with Zerto itself but the demands it can put on the DR storage environment, you will be replicating all your VM disk writes as well as journaling and potentially adding more demand when testing (as the Zerto continues to replicate even when testing, which is great, but does hammer the storage).

We've had no issues with the performance.

It's been able to scale for our needs.

In one word, fantastic. When we evaluate a product one of the key areas we look at is the level of technical support we will get from the vendor. Bottom line IT systems have a habit of going wrong (one of the reasons I have had a job for the past 20 years), so once you accept that no system will be error-free, you need to know that if you do need help its available. We have had issues, bugs and questions and in every case we have been supported by the Zerto tech support team.

Our DRaaS platform, prior to Zerto, was an extension of our Asigra Cloud Backup platform. Whilst this worked it could not deliver the low RPOs we now see with Zerto nor the efficiencies we see from Zerto in managing day-to-day tasks on the platform such as validation, failover tests (and on the odd occasions actual live failovers). Our choice with Zerto was based on our own piece of mind, we protect a variety of end-users so never failing them (i.e. never failing to replicate their VMs and know we can spin them up when needed) was crucial, Zerto has delivered this for us.

Our deployment was fairly complex, but then we had to deploy a platform capable of multi-tenant support with complex networking and integration with vCloud Director so that customers could access their DR systems via a secure web interface. If you are deploying a site-to-site solution then deployment is very straightforward. Each site requires a Zerto Virtual Manager (ZVM) which is deployed upon Windows, this will then integrate with your vCenter servers at each site. From here it’s a few button clicks to deploy the Virtual Replication Appliance/s (VRAs) which are small Linux systems bound to each host that handle the ‘smart’ features of Zerto Replication, linking the site and your off.

Deployment was performed using in-house resources. The most important bit of advice I can offer to anyone considering implementing Zerto is understand your storage requirements at the production site and then decide on what levels of performance are acceptable. If you want to have low RPOs (seconds) then remember that you will be replicating all of your production writes into the DR storage device. And as initially these writes are put into the journal datastore and then read out after the defined retention period and written to the actual storage datastore be careful not to overload your DR SAN. As an example we deploy using separate SANs for journals and customer storage, with larger customers getting dedicated storage designed to accommodate their traffic patterns.

As a Zerto Cloud Service Provider (CSP) our licence model is different to end-users who can purchase the licence on a perpetual basis. For us the ROI was under 6 months, but we already had a large portion of the hypervisor and storage environment needed so were able to keep our costs to a minimum.

Zerto, in my opinion, is one of the best DR products on the market currently, its only flaw (if it can be called that) is that it is limited to virtual environments, specifically VMware & Hyper-V (it does also support replication to AWS if needed). If you are looking to streamline your DR capability and remove risk then speak to Zerto and get them to run you through a demo, what they say the product can do is not sales talk, it really can do it.

Zerto Dashboard

Failover Wizard

Recovery Checkpoints (Journal)

Our main use case for this solution is disaster recovery, migration and app testing.

Zerto helped to reduce downtime. I worked a lot in a consulting capacity and experienced DR situations where XYZ was down or a data center was down. Using Zerto to get them back up and online was a lifesaver.

Zerto reduced the staff involved in data recovery. It's a tool that allows you to do a lot just with one person at the console.

The most valuable feature of this solution is the live migration. 

This solution could be improved by being more cloud agnostic. 

I have been using this solution for eight years.

This is a very stable product. I've never heard anybody complain about its stability. I would say it's probably one of the best out there.

This is a scalable solution. 

The technical support for this solution is good and their staff are knowledgeable and able to assist quickly with resolutions. 

I would rate them a nine out of ten. 

Positive

I've used several other products including Site Recovery Manager. Zerto is the easiest to learn. There is much less of a learning curve. Other tools specific to VMware are now trying to emulate what Zerto has done to make processes easier. Zerto was a huge step in making things more simple to manage. The app works really well and integrates with VMware really well. 

The initial setup is straightforward, especially if those setting it up understand the company's infrastructure. The problems are not directly related to Zerto itself. They're always related to how the infrastructure is set up or how the network itself is segmented and having certain people that have control or access and others that don't.

The return on investment is in the ease and functionality of the tool as opposed to actually a gain from using the tool.

There may be less expensive solutions on the market but with Zerto, you get what you pay for. A lot of people don't like to think about the price until it's already happened and then the price is too high because they would be losing either way. It's better to think about it and pay for it upfront than pay for it after the problem.

We previously used and considered Site Recovery Manager.

I would rate this solution a nine out of ten. 

We started off using this solution for disaster recovery and DR testing but then it morphed into more of a file recovery tool. We can usually get closer to a point in time recovery using Zerto versus the nightly backups that we do.

Zerto gives us peace of mind knowing that if we were attacked by ransomware, we would be able to recover data from the time before the ransomware to get us back to being fully functional. Zerto helped to reduce our company's disaster recovery testing model to where we can do it all within a day. We normally pick a time around lunchtime on a set day for the different groups to test with and it is completed by the time lunch is over. 

It definitely does make life easier when you're in a situation where you have to have all hands on deck as it doesn't require you to have as many people to bring everything back up.

The file recovery functionality is definitely the most valuable as well as the amount of time it takes to recover a VM. The different snapshots it makes are great, especially when we try to schedule DR testing with our business unit. The less time that we have to spin up the environment, the better the whole testing process will go.

One common use case I'll get is when someone says, "I deleted," or, "I've changed a file." I can ask them, "What time did you do it?" If they tell me a specific time, for example, 1:15 PM, I can pull that file at 1:14 PM and recover the data.

The backup end of this solution could be improved. We tried using it as a full backup solution and it took way too long to complete at least one backup. We tried it once and didn't try again. I'm not sure if they've improved that since then but we actually went in a different direction for backups.

I have been using this solution for six years.

This is a stable solution. 

We haven't had to scale much as we're a small business. If we were to grow, it would be a couple of servers at a time so I can't really speak to the scalability of it. We have 400 servers total and only use Zerto with what we consider mission critical.

The customer support is excellent. When you call with an issue, they answer almost immediately. The guys are really knowledgeable.

I would rate their support a ten out of ten. 

Positive

We started off with Site Recovery Manager. We did not like the process and once we tried Zerto, we saw how easy it was. That's been the solution until recently as we've added a second data center in which we use now Pure Storage with VMware. They do active clustering and we can use a simple vMotion to move from one site to another versus the way we used to do it before completing a migration with Zerto. 

We still keep using Zerto because we know Zerto works. Zerto is a lot faster especially compared to what we used to do with Site Recovery Manager.

The initial setup is straightforward. I just followed the documentation online and it was set up in a day.

I completed the setup myself. There may have been a help check afterwards once we got the first test recovery group setup. 

Based on the fact that we can rely on Zerto for recovery if anything were to happen and the confidence that our management has in this product, it's definitely worth the money. 

We paid a big investment upfront with renewal fees each year. This is another reason why it's easier for us to keep this product as well as have another solution, because we've already paid the money upfront.

When evaluating Zerto, I would advise others to try to think of any potential scenario to test with and use it to prove whether it does or doesn't work.

I would rate this solution a ten out of ten.

We use it for disaster recovery, by replicating to our DR data center.

It has simplified our disaster recovery plan. With VMware SRM it was a little bit more complex. Zerto adds more granularity, but not at the expense of complexity.

The most important features are the 

• simplicity of recovery 
• wider capabilities and feature sets than SRM has.

I have been using Zerto for about three years.

We've been using it since version 7. Since then, it's gotten better and better. We've had some bad experiences with DR tests where everything went sideways and we had to restore a bunch of VPGs or recreate them. It seems like those situations are happening less and less as the product develops.

We have 1,200 seats and we have about 1,000 VMs that are replicated. So far, scalability hasn't really been an issue. We haven't run into a problem scaling it out.

I haven't been a super big fan of the support area. The support could really be better in terms of responsiveness. I've had some issues that took two or three days to get resolved. Once I got to the right person, they were resolved quickly, but it took a while to get to that person.

On a scale of one to 10, today I would rate their support at about a seven. If you had asked me two years ago, I would have rated it at three.

Neutral

We were an SRM customer and moved to Zerto. We had issues with SRM and I think we had some issues with Zerto initially. We've had it for three years and we've gone through several revisions. With every revision, it seems to get better. They keep adding feature sets.

SRM and Zerto are really the primary competitors. We like the fact that Zerto does VM-based replication instead of having to involve storage-based replication. You can just point to an instance of it and say, "Replicate to this DR data center," whereas SRM is a little bit more complex in that context.

The speed of recovery between Zerto and SRM is similar. With the later versions of Zerto, the recovery speed has become a little bit faster.

It's very straightforward to set up. You just install the software and point it at your vCenter. There are not really a lot of overly complex parts to the installation. It installs relatively easily and quickly.

We did it ourselves.

We haven't seen ROI because we've not ever had to recover anything. But in an instance where we would have to recover from a disaster, we would definitely see ROI. It's like paying for insurance. You don't really see any value in it until you need it.

The licensing is a little bit steep, but there is some value that you do get for it as well.

In our usage, Zerto has not helped to reduce downtime or the number of staff involved in a data recovery situation. It also hasn't reduced our DR testing. We do a DR test regularly and that is about the same as it was.

I don't have any advice, but I would absolutely recommend it. The simplicity of how they have laid out the VPG structure, and being able to separate those out into groups, as opposed to SRM where you're replicating everything, seems like it's really well designed.

I've used it for a temporary migration. We had to shut down a data center and we moved some database servers over to a disaster recovery site. We then did the maintenance at the data center and brought them back.

We're using it only for on-prem and we use it to replicate from our onsite data center to a co-location, but there is a fiber connection between the two, so it isn't an internet-based replication.

In that migration instance we had six terabytes of data that we needed to protect and bring online quickly. We had a replication going and we made the protection group switch and brought the systems back within less than 30 minutes. It reduced our downtime on some critical applications.

If we hadn't used Zerto, we would have had to vMotion them to the other side and that could have taken hours. That could also potentially have been unreliable because there's a timeout period when vMotion works. We used Zerto to be safe.

It is pretty simple to use.

Whenever we do a failover, there's a confirmation box that shows up later. It's a little hard to see sometimes. We'll do the failover and some preparation activities and then there's a checkbox you need to check to continue and sometimes it's small, in the corner, depending on which screen you're using. A popup to continue would be a little bit better because then you're not sitting and waiting for something and it's already there.

We also had an issue with a misnamed network. They should make that a little more apparent when it's not available on the destination side. We were able to go all the way through with it, but when we did the recovery, it wasn't available. A pre-check to say, "Hey, it's not available. What network do you want to use?" would be helpful.

I have been using Zerto for about a month because I'm new with my current company.

The stability has been alright. We have failed over quite a number of machines.

We did have an issue with one failover. It didn't fail over completely. You really don't want to have to contact support in those situations, but we had to. It could have been an issue on our side as opposed to something being wrong with the configuration. I don't know what happened, but they got it working.

We had to call support during that migration because one of the settings wasn't correct. I don't know exactly what went wrong, but we had to create a ticket. Zerto got back to us within an hour, so we were really impressed with the support from them. It was really good. They got us taken care of pretty fast and we were back online during the process, within an hour. They were quick to respond after we submitted the ticket and then they got it fixed. There's not really much more they could have done in that situation.

Positive

We use VMware-native as well as Zerto. It's all circumstantial, based on sites. Some sites ended up getting an SRM license, so we have kept them instead of wasting licenses. And some sites use Zerto. Maybe down the road we'll pick one of the products, but for now, we use both.

Zerto was already there when I stepped into the picture. I helped initiate some of the disaster recovery processes. Based on what I saw from the outside, it was easy because it was ready for that situation quickly. It was ready in a business day or less, aside from the replication aspect or the data sync from when you first set up the jobs. But the basic setup to get things going was ready within less than a business day.

I would think we have seen return on the investment in Zerto because we use it a decent amount of the time. We have reduced the downtime within the last month because of it as well.

We've used SRM from VMware. Personally, I prefer Zerto because it's a little more automated. VMware has more requirements and VMware tools get us stuck sometimes. If the VMware tools aren't working on a virtual machine, it won't replicate over as quickly or start up as quickly because it's waiting for that service. You have to do custom settings to avoid that. Zerto doesn't have that requirement. It's a little more click-and-go versus click-and-monitor and then trace back and see what went wrong.

Zerto is also probably faster because SRM waits for VMware tools to come up and say, "Hey, we're here." That's not a requirement that I know of, with Zerto. Maybe it is. I'm a newer user of the product.

In terms of the number of staff involved in data recovery situations, Zerto hasn't really reduced that. My team generally handles those situations and it's the same number of people, regardless of which product we're using.

Zerto worked and did its job and it was easy to use. My team liked it, and the database administrators, who were the customers in that instance where we did the temporary migration, appreciated it.

I would rate it at eight out 10. Sometimes the interface can be a little tricky. If you're using a disaster recovery application, you're in a stressful situation already. Sometimes there are a lot of confirmations you have to go through just to start the Virtual Protection Group, and then it starts and you have to confirm again a few minutes later. You're stressed out. You're talking via chats with a bunch of people and there were times where that prompt was probably sitting there for minutes, which cost money.

More confirmations upfront and removing that second one later on in the process would be good, or a popup, instead of it being a small checkbox in the corner of the screen, is my recommendation.

It is controlling our mission-critical production system as a backup and a failover.

Zerto has taken us from being able to do a failover in four to six hours down to one to two hours.

The most valuable features are

• the continuous streaming
• that it takes very little CPU usage — it doesn't affect production 
• the recovery time is very short.

With the VPG (virtual protected group) it would be nice if you could pick individuals in the grouping instead of having to failover the whole group. 

Other than that, it's a pretty good product.

I have been using Zerto for about a year.

It's very stable.

I don't see a problem with scaling it at all. They could improve setting up for SQL clustering or for SQL Always On. It really is set up for a one-to-one and not for a multiple solution. They could work on that.

We will probably increase our usage in the future. Right now we have a license for 15 VMs through Zerto and we are only using 10.

We haven't worked with Zerto's technical support other than during deployment. Everything seems to be running really well now. During deployment, their support was very responsive. It's just that they did not have a good solution that worked with VMware and Nimble.

Positive

We were using Veeam. We switched to Zerto because it has continuous streaming that would keep us up to date a lot faster. Veeam kept promising they were going to have that, but they never came through on their promise, after waiting for a year. We were able to convince management to switch to Zerto.

The initial setup of the product was very complex. We were using a SQL Server cluster with a Nimble array, so it was very complicated to get everything set up correctly so it would failover correctly.

Our deployment took about six months. We had an implementation strategy for the solution but it failed three times before they could get it to work. Our deployment plan was set up to failover for our SQL cluster and several web servers to a backup location. In setting up with the Nimble, Zerto recommended that we use an RDM. The RDM did not work. We were using VMware with Nimble and the Zerto team had not used that particular solution before. We jumped through hoops three times before we were able to get the right combination to get the cluster to failover correctly.

There are only three of us working with Zerto. I am the DBA, we have a system administrator, and we have our IT director. We learned very quickly how to use the product very thoroughly since we had to rebuild our solution three times.

We were working with Zerto directly. They didn't have a good solution and we had to test out a lot of things with the hardware and software that we were using. They could have improved that. They kept giving us solutions that would not work, so we had to keep trying different solutions.

It's hard to say if we have seen ROI since it's only been running for about four months. I think that we will see cost savings over the next year.

As far as licensing goes, start out with what you need to get started and you can always scale up. Zerto worked very well with us. They have a tool called zPlanner which was able to document how much we needed to get started. That was a very handy tool.

We looked at some other options, but nothing really compared to what Zerto offered.

The main differences were the ease of use, not having to have a dedicated person assigned to watching it, and the automation. A lot of this stuff is taken care of through Zerto without us having to script or put a lot of effort in on the back-end. Everything is automated.

Make sure that they can demo what you want done before you move forward. We had a problem with the SQL clustering. Make sure that the equipment that you're using is certified by all the vendors that are involved, like VMware.

Now that we have the solution working, we're very happy. We've had it working for the last four to five months. We were able to test it with a test platform and it worked amazingly.

We use the ZERTO Implementation to pretend critical VM and Groups of VM (Application Consistency) from failing. The solution with ZERTO helpy us to TEST and Failover without pane. Installaion is based on local primary site and remote desaster site with a distance of a few 100km and a bandwith up to 30Mbit.

Managing the system is easy and reliable, you can choose any VM you want to replicate to your DR Site in Combination with other VM's. Testing a DR is easy and well reported.

Any business unit can define it's needs for SLA and the IT department is able to follow these needs with less management and overhead. If a problem occurs (like ransomware or db errors) IT department is able to roll Back to the right point without loosing productivity of other not effected VM. So for both business and IT it is much easier to use Zerto and profit from best function and best performance in these area of replication tools

Migration of complex VMware and Hyper-V solution. Using Zerto to replicate to azure and S3.

DR Solutions with less management and less space. Licensing of DR Site is not necessary until activation of VM. That are very good news for Db users.

As described above, only the WAN traffic regulation should be monitored, if it runs it works fine and absolutely stable

More VM more bandwidth over WAN, but this is normal. In competition with other replication tools, Zerto works well and compression is fast and stable. If you want to scale order license for it and go on.

Customer Service:

Really fast and helpful. The documentation is a good stuff to read before calling, most of the events are well described and could be solved easily by yourself

Technical Support:

very fast and very good

We uses before VMware Site Recovery. It is to complex and expensive at all.

Parallel to the primary replication tool Zerto, we are using VEEAM Always On Replication Version 9.5. It works but we can't replicate in the same manner as Zerto, because this tool works with events and they are queued so you will not be able to replicate in the same way as Zerto. Also the amount of VM's to replicate at the same time is limited to the VEEAM Environment of proxies. More Proxies more VM, but also more overhead and bandwidth usage.

It works fine for replicate a few times a day, but not in sec.

If you follow the documentation you need about 20 Minutes to first run of replication. This is fast and you can choose it if you want with the trail license from Zerto by yourself.

No we did by documentation and without external team.

Hopefully 50% less than with teh other solutions, we will have a look to it after a year production

Licensing is VM based so you can buy packages or single VM. Price is not low but the power of application is high, so you will get your money back, in case of Disaster situation. You will be so fast back in production and this is very rent-able for the business units you safe from outtakes.

Yes, Site Recovery and VEEAM Always On Solution

With the next generation Zerto5.5 they allow replication and production in azure, so cloud based DR comes reality.

Everybody who looks for alternative solutions in physical sync mirroring of data (Metro-cluster) should think about business needs and ABC (Application Business Continuity) Zerto can do it and helps you to keep business online with less cost than other solutions.

The Clone Virtual Protection Group does not impact the production virtual protection group which is the most valuable feature.

Failing over the VM without removing/touching the production VM from inventory is also an important feature.

This product has a significant impact on moving the data center across various sites with perfection.

There is a need to allow the source vCenter Inventory to be imported with a single click.

What I meant by one click vCenter is that there is no current option to migrate a vCenter logical cluster as a whole. You can only migrate individual VMs only by adding them into a VPG (Virtual Protection Group). You can failover multiple VMs after adding them into VPG.

I have used this solution for over three years.

There were no stability issues, it is one of the most stable software out there.

There were no scalability issues, it is very simple and easy to deploy/scale.

The technical support is amazing, i.e., if you purchase the premium support. They respond within minutes, it is a very professional technical support team.

I have used a different solution. It was more complex and full of bugs, so that was the main reason that we switched to this product.

The setup was very straightforward. Anyone can do it!

Pricing depends on your future growth. Start small and then scale up.

We looked at another solution namely the VMware SRM solution, it is the recovery point for virtual machines.

Just buy it with eyes closed, no requirements are needed. It works with various VMware versions.

This is the most amazing hypervisor-based replication that I have ever used.