What is our primary use case?
We are using the PowerMax for our core banking solution, ERP, and our payment systems, as well as middleware, ATM, and the most critical banking systems.
How has it helped my organization?
The main improvement for us is that we have seen up to 12x performance improvements after moving from earlier, mid-range Dell EMC storage to PowerMax. Some of our reports, which were long-running, are now completed in a few minutes. Something that would take two hours is completed in 15 minutes and that has improved productivity.
We also used to get timeouts from our storage, but now, after migrating to the PowerMax, there are no timeouts because the latencies are in microseconds, compared to the milliseconds of our old solution.
Our bandwidth requirements have been reduced because of the compression and the dedupe that we are getting with the built-in SRDF. It is bandwidth-optimized. And the best part is the reverse replication. Suppose you activate your DR. When you have to come back to the main array, only the changes are synced. That is unlike many other products. Here, only the changed tracks need to be updated, making the reverse replication very fast.
Also, by enabling the compression and deduplication, we get a very good level of compression and dedupe, of 4:1, which means if you have 40 terabytes, you only need to buy 10 terabytes. There are cost savings there. And by default, thin provisioning is in place, which also gives you at least a 40 percent reduction. And because of the bandwidth optimization, the link required for the DR replication is also reduced, meaning you are saving on the bandwidth costs. We have easily saved 50 percent.
Overall, you are getting very high-performing and reliable storage.
What is most valuable?
The most important feature is the performance, because we have four directors, all of them Active-Active. (PowerMax directors support multiple functions including front-end I/O modules).
It is highly available because it has multiple controllers. All of them are unlike some of the traditional storage arrays, where you assign certain LUNs to certain controllers. Here, everything is Active-Active. You don't assign a particular disk or LUN to a particular controller. All the controllers are servicing all of the LUNs. So from an availability point of view, we don't even know if a particular controller or director has failed. And all the spare part replacement, including controllers, can be done online while systems are working. We don't need to do it during off-peak hours. We can do so during normal working hours because the performance you get from the service, due to the other controllers, is enough to take care of any failed components.
There is also a Call Home facility configured, so the system can send out alerts to the Dell EMC support team. They can dispatch spare parts based on these alerts, so it is a fully integrated system.
Another valuable feature is the DR replication technology, which is based on the Dell EMC SRDF solution. It provides a very good level of near-real-time replication. It supports synchronous as well as asynchronous. When it comes to activating the DR, it is very easy.
Then there are the compression and deduplication which are always on. We get more than 4:1 capacity savings using them. The efficiency benefits from compression and deduplication are through a specialized hardware module within the storage itself, and that means there is no overhead to the compression and dedupe.
In addition, the solution supports IBM Power Systems, Solaris, VMware—almost everything is supported. That's important to us because we are using multiple hardware flavors including IBM Power Systems, SPARC machines, and HPE Onyx. All of these are different classes of machines, and we have different operating systems. We have Linux and Windows on physical and we have it running on VMware. Oracle virtualization is also supported. It supports a wide combination of specialized technologies and hardware.
And the built-in QoS capabilities enable you to drill down to any particular QoS levels and define the type of performance you'll have: diamond, platinum, or gold. The result is that different performance levels can be set for individual disks. Using the QoS functionality, we can vary the performance or prioritize it based on the criticality of the performance needs.
Another nice feature is the CloudIQ app. You can even monitor things using the app on your mobile. Every five minutes, the performance statistics and the system diagnosis data are sent to the cloud and you can access them sitting anywhere. You get these statistics at your fingertips.
What needs improvement?
Although they call it unified storage where you have SAN and NAS, with a NAS implementation on top of a SAN, the NAS implementation is a little complicated and clumsy. As SAN, as block storage, it is very powerful. However, even though NAS is provided as a feature, I don't think many customers will be using a PowerMax as a NAS because NAS is normally meant for file servers or some kind of archival storage. If they could provide a very good NAS implementation, it would be better, so that customers don't have to look for other simple solutions for NAS.
For how long have I used the solution?
I have been using Dell EMC PowerMax NVMe for one and a half years.
What do I think about the stability of the solution?
We don't have any issues with the stability. It is rock-solid.
What do I think about the scalability of the solution?
It is scalable. We recently did an upgrade. You can keep on adding disks within a shelf or even attach additional shelves.
Also, the NVMe scale-out capabilities are very important. Although we are using SSD, all-flash drives, the backend is NVMe. It is quite fast. The IOPS requirements will never reach the max. It is also future-looking storage because it supports storage class memory (SCM). That is where you can utilize the full benefits of the storage solution. Currently, we are not using SCM because it is quite expensive. At the moment, we don't need it, but the storage backend is already NVMe and the controllers are connected using InfiniBand for very high bandwidth.
It's also very easy to add or expand disks in very few steps. Everything can be done online, even the firmware updates, meaning that you don't need any downtime. It's all seamless.
How are customer service and support?
Dell EMC's technical support is excellent. The backend support is very strong, just like the implementation team. They have a dedicated team for PowerMax, like they used to have for VMAX or Symmetrix.
How would you rate customer service and support?
Which solution did I use previously and why did I switch?
We were using a Dell EMC mid-range storage solution before.
How was the initial setup?
It is a complex system, but the engineers and architects behind the implementation are well-versed. They're very technically competent. They're on top of the prerequisites, and there are a lot of those. For a first-timer customer the setup will be difficult, but they will help you. The implementation team is very strong. They're very clear on what needs to be done and how to do it. For us, it was a very clean implementation. We didn't have any hiccups.
It is not a one-day job. It is not a very easy installation. It requires the experts. But Dell EMC makes sure that you get a certified, real expert to do the implementation. It doesn't get done through a partner. Dell EMC themselves send their engineers for the installation.
What's my experience with pricing, setup cost, and licensing?
It is high-end storage and it is a bit expensive, but it is doing what it is meant for: running business-critical applications or latency-sensitive applications like ATM payments, and those kinds of core banking systems.
Which other solutions did I evaluate?
There may be customers who don't utilize all the compression features of competing products, thinking they may slow the system down. I know certain customers who have bought competing products, but they keep the compression and deduplication disabled by default, or even the encryption, because they create additional overhead. That means that with those solutions, you need to have more capacity than what you need with PowerMax. The guarantee with PowerMax is that there is no compromise on performance, even if you enable compression, deduplication, and encryption.
What other advice do I have?
This particular model of storage is considered Tier 0 storage for the most mission-critical applications, the applications that require a very high level of reliability and low latency. It's also for the types of applications that require real-time replication across different sites. The solution is suitable for mission-critical applications and not for archiving, because it is not cheap.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.