What is most valuable?
Compellent is a very easy-to-use solution because after the first installation you have no more parameters to fix. You can add discs easily and all discs are in one group or folder. It is also very easy to expand.
The solution is very complete as you can use it as solo for primary storage for production, and you want to implement a cluster with two storage systems, all you need is include it in the software of the storage system. So it's easy and very efficient, and when I have to choose a solution for a customer, I must find out what kind of security the customer wants. When I use this solution, I have all kinds of installation possibilities. So, for me, it is a very good solution.
What do I think about the stability of the solution?
When we installed this solution, we were surprised by how stable and efficient it is.
What do I think about the scalability of the solution?
For me, there is only one limitation with the scalability of the solution. When you have the solution with two controllers, and you add a lot of SSD, you reach a limit. You have to use your system in his linear opérating zone. when you add discs, you add IOPS and storage space. there is a saturation point of the controller beyond which you add only storage space but no more IOPS, the limit point is reached and the limit is almost 60 discs. You can put in 200 discs, mostly at once. This point limit the scalability of the full flash solution with only one system. you can add another system in fédération mode to exceed this limit.
How are customer service and technical support?
I am very impressed by the simplicity of the solution. They have very good support system called CoPilot. Whenever I contact them, they are very efficient. Whenever a customer calls them, they immediately take his problem in account wihout going through a support level 1; we are immediately in contact whith expert.
Which solution did I use previously and why did I switch?
We work on different solutions. The most important point for me is how is implemented disc virtualization. In this solution, disc management is really very simple and disc utilisation is efficient. all disc are add in a group and raid is oragnized on 2Mo stripe. The stripe are organizer in 2 raid automatically : by default, 20% in raid 10 to write blocs with very effective performane and 80% raid5 to store data with a good use of space.When you add many disks in the folder their are automatically integrated in the profile and add performance to production. The possibility to implement two system in a cluster and can also be integrated in a federate mode to agregate multiple system in one global storage.
What other advice do I have?
My advice to others would be to get the demo to test the solution out. On a scale of one to ten, my rating is a ten. Simplicity and stability are very important for me, and this solution is very simple to use, it's very efficient and a customer won't make many mistakes when using it.
In the future, I would like to see better monitoring so that we can give to the customer an indication of their capacity to upgrade. These kinds of tools must be very user-friendly - especially for those customers that didn't study storage functionality in detail.