Posted by CANbike on Mon, 18 Mar 2013

Benchmark: WD My Passport 2TB - WDBY8L0020BSL

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The WD My Passport 2TB (model WDBY8L0020BSL) is a USB 3.0 portable hard drive often found on discount. This one was purchased for $119.99.

The plastic casing is rather large, though not surprising due to the larger hard drive capacity. Compared to the average portable hard drive, the case is roughly 33% larger. However, the case feels rather flimsy and cheap which is uncharacteristic of WD’s higher standard as a hard drive manufacturer. On the other hand, My Passport is their cheaper line of external hard drives and the plastic case remains cool enough during usage.

Included with the hard drive is an 18” USB 3.0 cable that also powers the portable hard drive. No AC adapter required.

Performance was great for the price. Read speed was around 100 MB/s, and write speed was around 75 MB/s. Not the fastest USB 3.0 performance, but significantly faster than a USB 2.0 hard drive.

Given the price and performance, this is a great portable hard drive.

Benchmarked below is the WD My Passport 2TB (model WDBY8L0020BSL) formated to have a single ext3 partition.

Device Information

fdisk -l  /dev/sdb

Disk /dev/sdb: 2000.4 GB, 2000365289472 bytes
255 heads, 63 sectors/track, 243197 cylinders, total 3906963456 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0005f107

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048  3906963455  1953480704   83  Linux

Device Read Benchmark (USB 3.0)

hdparm -t  /dev/sdb1

/dev/sdb1:
 Timing buffered disk reads: 312 MB in  3.01 seconds = 103.62 MB/sec

Device Write Benchmark: 1MB x 1000 (USB 3.0)

dd if=/dev/zero of=tempfile bs=1M count=1000 conv=fdatasync,notrunc
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 13.7562 s, 76.2 MB/s

Device Write Benchmark: 10MB x 100 (USB 3.0)

dd if=/dev/zero of=tempfile bs=10M count=100 conv=fdatasync,notrunc
100+0 records in
100+0 records out
1048576000 bytes (1.0 GB) copied, 13.7273 s, 76.4 MB/s

Device Write Benchmark: 100MB x 10 (USB 3.0)

dd if=/dev/zero of=tempfile bs=100M count=10 conv=fdatasync,notrunc
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 13.8225 s, 75.9 MB/s

Device Write Benchmark: 500MB x 2 (USB 3.0)

dd if=/dev/zero of=tempfile bs=500M count=2 conv=fdatasync,notrunc
2+0 records in
2+0 records out
1048576000 bytes (1.0 GB) copied, 13.7103 s, 76.5 MB/s

Device Write Benchmark: 1000MB x 1 (USB 3.0)

dd if=/dev/zero of=tempfile bs=1000M count=1 conv=fdatasync,notrunc
1+0 records in
1+0 records out
1048576000 bytes (1.0 GB) copied, 14.346 s, 73.1 MB/s