I like their scalability. The fact that where I have 24 drives in one of my servers, I can basically turn it into its own little storage tray if I want to, and then attach a server to it. It's really good for applications that you use really heavy disk IO.
Improvements to My Organization:
For us, we use the DLs more on a piece by piece basis, so when our clients come to us with a very specific demand that really doesn't fit well with our blades, which is our preference, then we go to the DLs, and then we scale it out for whatever they need.
Room for Improvement:
I'm not a fan of their rails. I hate how those things rack, as they're just not nice.
The server itself is quite good, easy to use. Configuration of it is a little bit tedious, you've got to be willing to spend a couple of hours just to get it set up before you can even start using it, because the reboots are ten - fifteen minutes long, and that'll kill you.
Cost and Licensing Advice:
The cost per compute. I pay as much for a ProLiant DL as I do for a Blade. It requires more power, more cooling, more space for essentially the same function, if I wanted to, with the exception of additional storage. So for me it really does come down to cost.
Other Solutions Considered:
We haven't looked at competitors in a very long time for those. We basically have stuck with HPE. It's a known name, so I don't want to give my customers something that might work, I want something that will work.
Get on it with OneView, because it's that single pane of glass, you can manage your blades, your DLs, and your 3PAR, all using that one tool.