|Seagate Momentus XT Hybrid ST750LX003|
|Reviews - Featured Reviews: Storage|
|Written by Olin Coles|
|Tuesday, 29 November 2011|
Page 9 of 10
Compressed File Transfers
Synthetic benchmark tools are very useful, but sometimes it helps to reproduce real-world tasks; our file transfer test does exactly that. The goal of this test was to measure write time to the test drive, using three 1GB compressed files. Since we wanted to ensure our source drive was faster than all the destination drives tested, we utilized a RAM-Disk partition based on the a 4GB portion of the 16GB Kingston DDR3 installed in the system.
Each file weighed exactly 1GB (1073741824 bytes) after maximum GZip ultra compression, and three of these files were transferred from the source to destination all at once. This process was completed ten times on each hybrid drive to ensure caching algorithms were given every opportunity; however this was an unnecessary step as write-to file transfer functions are not cached. The results were consistent with every test, with the transfer time illustrated in the chart below:
Based on our results, file transfer speeds will depend on the media written to. In the case of hybrid drives that media is the hard disk, which benefits more from the integrated DRAM buffer than any logic-controlled SSD cache. The SSD performed file transfers fastest, followed by the RAID-0 combination of Momentus XT SSHDs. Beyond these two stand-out storage solutions, results were very similar.
In the next section I share my conclusion and share the final product rating.