Posted by CANbike on Tue, 28 May 2013

Benchmark: Seagate GoFlex Ultra-Portable Drive 1.5TB - STAA1500100

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The Seagate GoFlex Ultra-Portable DriveSTAA1500100 was an early model external portable USB 3.0 hard drive with a 1.5TB capacity. It’s main selling point was the GoFlex system which allowed the interface to be changed by purchasing different adapters. The model number STAA1500100 included the USB 3.0 adapter along with their largest capacity (1.5TB) portable hard drive. It could often be found on sale for around $130. However, the drive is now discontinued.

Anyway, it is benchmarked below for reference purposes.

Construction is rather bulky for a portable hard drive. The width, height, and length of the case is larger than normal due to it containing their largest 1.5TB 2.5” hard drive. Moreover, adding the adapter extends the drive in length by another centimeter. Compared to an external desktop drive, this is still portable. However, compared other portable hard drives, this is huge. The case feels solid on the sides, but flexed under pressure on the top and bottom.

Design wise, the top of the case is a glossy black plastic, while the bottom is matte black plastic. On the back is the GoFlex adapter port which is a standard 2.5” hard drive SATA connection. The led light is on the adapter and not the hard drive case.

In the package was the portable hard drive, GoFlex adapter (USB 3.0), and an 18” USB 3.0 cable.

Performance was good, better than USB 2.0, but not stellar. Read speed was around 88 MB/s, while write speed was around 68 MB/s. The benchmark was run multiple times to verify the read speed.

Overall the main selling point was the GoFlex adapter. If the flexibility was required, it was a unique option. However, performance was average and limited by the hard drive. Adding a faster GoFlex adapter interface will not improve performance.

This was a value hard drive in a unique case that was sold cheap.

Benchmarked below is the Seagate GoFlex Ultra-Portable DriveSTAA1500100 formated to have a single ext3 partition.

Device Information

fdisk -l  /dev/sdb

Disk /dev/sdb: 1500.3 GB, 1500301909504 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277167 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: 0x459004fc

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048  2930276351  1465137152   83  Linux

Device Read Benchmark (USB 3.0)

hdparm -t  /dev/sdb1

 Timing buffered disk reads: 266 MB in  3.00 seconds =  88.59 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, 15.3716 s, 68.2 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, 14.9981 s, 69.9 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, 15.1598 s, 69.2 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, 15.5322 s, 67.5 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, 16.1712 s, 64.8 MB/s