The Facts: 4K Advanced Format Hard Disks

April 1, 2010 | 10:40

Tags: #4k #4kb-advanced-format #advanced #compatibility #disc #disk #drives #format #hard #hdd #performance #windows-7 #xp

Companies: #seagate #western-digital

Iometer Results

Website: Iometer

Iometer is a powerful open source synthetic benchmarking tool, able to simulate the effects of a wide variety of software loads and circumstances on either individual hard disk drives and complete drive arrays. In the past we've chosen not to include it due to bit-tech's traditional preference towards real world benchmarks. However, to correctly check for drive stutter caused by extremely high random write latencies there aren't a great deal of options, so we've finally decided to include Iometer in our hard disk testing suite.

For our Iometer testing we subject the drive to random read or write commands of 4KB, with three outstanding I/Os to simulate high level multi-tasking. We ran each test for two minutes, repeating three times to ensure we recorded an accurate result.

Read

Iometer - Win7

Random Read Speed

  • Western Digital 1TB 'EARS' (4k Adv. Format)
  • Western Digital 1TB 'EADS' (Legacy 512B Format)
  • 0.5
  • 0.5
0
0.1
0.2
0.3
0.4
0.5
MB/sec, higher is better

Iometer - WinXP

Random Read Speed

  • Profile 1
  • Profile 2
  • Profile 3
  • Profile 4
  • Profile 5
  • 0.4
  • 0.4
  • 0.5
  • 0.5
  • 0.4
0
0.1
0.2
0.3
0.4
0.5
MB/sec, higher is better

The Facts: 4K Advanced Format Hard Disks IOMeter Benchmark

Iometer - Win7

Random Read Latency (average)

  • Western Digital 1TB 'EARS' (4k Adv. Format)
  • Western Digital 1TB 'EADS' (Legacy 512B Format)
  • 24
  • 24
0
5
10
15
20
25
milliseconds, lower is better

Iometer - WinXP

Random Read Latency (average)

  • Profile 1
  • Profile 2
  • Profile 3
  • Profile 4
  • Profile 5
  • 29
  • 29
  • 25
  • 24
  • 31
0
5
10
15
20
25
30
35
milliseconds, lower is better

The Facts: 4K Advanced Format Hard Disks IOMeter Benchmark

Write

Iometer - Win7

Random Write Speed

  • Western Digital 1TB 'EARS' (4k Adv. Format)
  • Western Digital 1TB 'EADS' (Legacy 512B Format)
  • 0.12
  • 1.12
0
0.25
0.5
0.75
1
1.25
MB/sec, higher is better

Iometer - WinXP

Random Write Speed

  • Profile 1
  • Profile 2
  • Profile 3
  • Profile 4
  • Profile 5
  • 0.10
  • 0.10
  • 0.10
  • 0.10
  • 1.00
0
0.25
0.5
0.75
1
MB/sec, higher is better

The Facts: 4K Advanced Format Hard Disks IOMeter Benchmark

Iometer - Win7

Random Write Latency (average)

  • Western Digital 1TB 'EARS' (4k Adv. Format)
  • Western Digital 1TB 'EARS' (Legacy 512B Format)
  • 98
  • 11
0
25
50
75
100
milliseconds, lower is better

Iometer - WinXP

Random Write Latency (average)

  • Profile 1
  • Profile 2
  • Profile 3
  • Profile 4
  • Profile 5
  • 98
  • 101
  • 101
  • 99
  • 12
0
25
50
75
100
milliseconds, lower is better

The Facts: 4K Advanced Format Hard Disks IOMeter Benchmark

For performance conclusions, see page 6
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