Random Read & Write Patterns

Now let’s check out the results during random reading and writing. We’ll evaluate the speed of random read and write operations by measuring the time the drives take to perform them. The data block size is varied from 0.5 to 32768KB in this test.

Unfortunately, the Seagate hard drive cannot boast much here: no matter how big the data block is, it is almost three times slower than Corsair Flash Voyager during random writing.

As we move on to reading, the gap between the flash drive and the pocket hard disk drive increases even more. During reading of large data blocks, the performance differs 4 times, while with smaller data blocks, the USB flash drive turns out up to 20 times faster. Wow! Very impressive, especially since most operations storage devices perform deal with small data blocks.

Average Access Read & Write Time

In conclusion to our synthetic testing we are going to measure the average response time of our testing participants during random sector reading and writing. The average read/write response time is measured in a 10-minute test to read/write 512-byte data blocks at a request queue of 1.

As you may have already expected, Seagate USB Pocket Hard Drive demonstrated longer average response time than Corsair Flash Voyager during both: reading and writing.