I ran these on my (8GB RAM) Sandy Bridge Core i7-2600K (not overclocked) H67 machine. I compared a newly bought USB 3.0 16 GB drive to an internal Kingston SATA and a previously purchased 8GB USB 3.0. I also compare the USB 3.0 drives to their performance with USB 2.0 port speeds.
Testing these drives: Newegg.com – Kingston DataTraveler 101 Gen 2 4GB USB 2.0 Flash Drive (Cyan) Model DT101G2/4GBZ I got them free with some RAM. Here are the results: ———————————————————————– CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ———————————————————————– * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 22.563 MB/s [...]
Tested some more USB flash drives. Running from my Lenovo work laptop, USB 2.0 only: Random 8G USB from a vendor ———————————————————————– CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ———————————————————————– * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 18.216 MB/s Sequential Write : 4.232 MB/s Random Read [...]
the replacement 1 TB Hitachi arrived. So, I decided to take out the 250 GB hard drive and replace that slice with the 1 TB Hitachi.
So, as it turns out, ZFS relies on the FreeBSD slice names to determine what goes where. This can be a problem, since the slice drive names can move around–if, for example, you switch what USB ports your drives plug into. Which is what I just did. I have no idea what ordering they were [...]