At first let’s check out the performance of our HDDs when they have been formatted for FAT32 file system:

This time we decided to discuss the results of Business Disk WinMark and High-End Disk WinMark separately on purpose. Let’s start with the first one.

In both cases we considered here WD2500SD is faster than WD2500PD. We could point out however that its performance is faster in case of a single drive compared with the results obtained for the array.

The next diagram refers to High-End Disk WinMark. Finally we can see WD2500SD win a brilliant victory: it appears much faster than the rival when we test single hard disk drives, as well as when we test RAID arrays.

Now let’s see what we get when the drives are formatted for NTFS file system. On the first diagram we have the results for Business Disk WinMark. WD2500SD is considerably faster here although in the array it slowed down a lot.

The efficiency of our hard disk drives in High-End Disk WinMark test gives us another reason to state that WD engineers’ efforts were not wasted: WD2500SD hard drive is faster than WD2500PD. You can get an idea about this advantage when you look at the speed the single WD2500SD demonstrated compared to WD2500PD working in an array.