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Kingston DataTraveler 101 Gen 2 8GB USB 2.0 Flash Drive (Red) Model DT101G2/8GBZ
  • Verified Owner
  • Owned For: less than 1 day

Pros: Excellent speed for the price, considering it's a USB 2.0 device (which has a maximum effective throughput of 35 MB/s). Cheap, well-constructed. You can't ask for much in an inexpensive flash device, and this one performs admirably for the price.

Cons: I don't see any cons. Sure, it's not hitting 35 MB/s. But does anyone really expect this out of a USB flash drive at this pricepoint?

Other Thoughts: The first things I did when I got this is test the drive's performance, then reformat it. It came from the factory formatted to a 16K block size. I reduced that to a "standard" 4K and benchmarked it again. Using a 4K block size cut the write speed quite a bit from the default 16K. This surprised me at first, but some reading material suggests that many new flash devices use 16K internal pages. This makes sense, as less pages to access means a simpler, weaker controller can get away with doing the work, which translates to reduced cost. The benchmarks back this up. In other words, keep this device formatted with a 16K block size, NOT a 4K. This will maximize both performance and lifespan, because it translates to fewer internal operations being executed to map what the OS *wants* to write to what the controller is actually writing.

Performance using FAT32, 50 MB chunks, 4 passes averaged:

16K BLOCK SIZE
Seq read: 21.5 MB/s
Seq write: 19.2 MB/s
Rand read (512 KB): 21.5 MB/s
Rand write (512 KB): 9.1 MB/s
Read read (4KB, QD@1): 2.6 MB/s (630 IOPS)
Rand write (4KB, QD@1): 0.8 MB/s (200 IOPS)
Rand read (4KB, QD@32): 2.8 MB/s (699 IOPS)
Rand write (4KB, QD@32): 1.0 MB/s (237 IOPS)

4K BLOCK SIZE
Seq read: 21.4 MB/s
Seq write: 10.9 MB/s
Rand read (512 KB): 21.5 MB/s
Rand write (512 KB): 4.6 MB/s
Read read (4KB, QD@1): 2.4 MB/s (603 IOPS)
Rand write (4KB, QD@1): 0.5 MB/s (154 IOPS)
Rand read (4KB, QD@32): 2.8 MB/s (691 IOPS)
Rand write (4KB, QD@32): 0.6 MB/s (176 IOPS)

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Anthony E.'s Profile

Display Name: Anthony E.

Date Joined: 10/15/12

  • Reviews: 1
  • Helpfulness: 1
  • First Review: 10/25/13
  • Last Review: 10/25/13
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