Ridiculously (1800 MBytes/sec) fast sequential reads

[rubear]

I have a Windows 8.1 i7 with an Areca 1882 controller. Testing a non-SSH RAID 5 with 3 drives, I get > 1800 MBytes/sec. Even with the very long test. Running Performance monitor, it also shows that speed on the drive. What can be going on here?

Sequential write shows 120 MBytes/sec for this drive set.

Thanks,
-Robert

[David (PassMark)]

The drive controller's device driver is probably incorrectly ignoring the no-cache flag.

[rubear]

The drive controller's device driver is probably incorrectly ignoring the no-cache flag.

This is a very large file for the very long sequential read test. There's not enough memory to cache it.

[David (PassMark)]

A long test doesn't mean it is a large file.

[carpel]

this is ridiculuosly fast

[David (PassMark)]

this is ridiculuosly fast

For a real disk it would be. But not for a RAM drive or RAM cache.