FYI: For a test setup I just purchased an LSI 9271-8i controller with 2 PNY Elite 480GB SSDs (RAID1). Initial Tests in a Workstation on Windows are looking quite good. Here are some results:
IOMETER random 4KB 80% write, 100GB Testfile (to eliminate eventual OS und Ctrl.Cache impact) , Windows/NTFS, Q-Depth=4, 4 Workers,
25863 IOPS
avg IO Resp Time 0,6ms
IOMETER random 4KB 80% read, 100GB Testfile (to eliminate eventual OS und Ctrl.Cache impact) , Windows/NTFS, Q-Depth=4, 4 Workers,
30600 IOPS
avg IO Resp Time 0,52ms
When using smaller Testfiles I get approximately 65000 IOPS, probably due to caching.