Question: I am seeing only 50MB/s reads:

```
ensnare@box:~$ sudo hdparm -tT /dev/sda
[sudo] password for ensnare:

/dev/sda:
 Timing cached reads:   4592 MB in  2.00 seconds = 2296.48 MB/sec
 Timing buffered disk reads:  192 MB in  3.90 seconds =  49.24 MB/sec

```

The array is already rebuilt and operational. Is this kind of slow performance normal? Anything I can do to make it faster? There weren't too many options in the controller configuration. Thanks.

Answer: 
Maybe change the stripe size, depending on what your storing.  

Is cache turned off?
I have 4 1TB Western Digital Enterprise 7200 RPM drives on a 3Ware 95500-SX and my hdparm results are

```
zeus:/home/Kendall # hdparm -tT /dev/sdb

/dev/sdb:
Timing cached reads:   1262 MB in  2.00 seconds = 630.86 MB/sec
Timing buffered disk reads:  128 MB in  3.03 seconds =  42.30 MB/sec

```

That's my development server, though, which is under some load. I'd expect higher numbers if the array was idle, like I suspect yours is. 

Just for some perspective, I don't exactly know if your buffered reads are "slow" but I put mine up for comparison.
Here's THE best solution if going to a H700 isnt possible.
Enable cache directly from the firmware. YOU MUST be running on a battery backup or if power goes out you could be hosed by enabling the cache. Below is a tutorial explaining the full process to do so.

<http://www.1337admin.org/windows-server/windows-server-2012-r2/dell-h200-raid-controller-speed-hack/>