Poor read performance on Dell Perc H200 RAID10 with (4) 1TB 7200rpm 64MB drives

The short answer is yes, that's the level of performance you should expect to see from the H200.

The long answer: The H200 is the old SAS 6iR with SATA 6Gb/s support. It doesn't have the usual features you'd see on a RAID card (battery backup unit, onboard caching, RAID5/6 support). The cache determines how fast your RAID array is (along w/ the # of spindles and type of drive), so no cache = slow performance. Add the 7200RPM SATA drives (which are slow compared to a 10-15k RPM SAS drive) and that's the level of performance you can expect.

Please take a look at the following info:

The default cache policy on a physical disk is Enabled in SATA drives and Disabled on SAS drives. When physical disk caching is Enabled, disk I/O performance is improved, but a power outage or equipment failure might result in data loss or corruption.

NOTE: It is recommended that you use a backup power source for all Dell production systems.

On a PERC H200 card, caching is forced to be disabled for all physical disks configured into a virtual disk, regardless of the drive type and default drive settings.”

http://support.dell.com/support/edocs/storage/storlink/h200/en/ug/html/features.htm