4k Random Read/Write
Each level tested includes 300 data points (five minutes of one second reports) to illustrate performance variability. The line for each queue depth represents the average speed reported during the five-minute interval. 4K random speed measurements are an important metric when comparing drive performance, as the hardest type of file access for any storage solution to master is small-file random. One of the most sought-after performance specifications, 4K random performance is a heavily marketed figure.
The Enterprise Performance 15K v5 starts out with an impressive average of 509 IOPS at QD256. The Savvio 15K.3 leads with 540 IOPS, and the Toshiba MK1401GRRB averages 507 IOPS.
Our Latency vs IOPS charts compare the amount of performance attained from each solution at specific latency measurements. Many applications have specific latency requirements. These charts present relevant metrics in an easy to read manner for readers who are familiar with their application requirements. The HDDs that are lowest and furthest to the right exhibit the most desirable latency characteristics.
The Seagate 15K v5 trails the other contenders in this test.
The Enterprise Performance 15K v5 averages 497 IOPS at QD256. The Savvio 15K.3 averages 428 IOPS, and the Toshiba delivers 444 IOPS. The Seagate 15K v5 exhibits excellent performance in random write workloads.
The Enterprise Performance 15K v5 takes an impressive lead in write latency.
Our write percentage testing illustrates the varying performance of each solution with mixed workloads. The 100% column to the right is a pure write workload of the 4k file size, and 0% represents a pure 4k read workload.
The 15K v5 trails slightly in random read performance, but wins the majority of the test by displaying excellent mixed write workload performance.
We record power consumption measurements during our test run at QD256. It is important to consider Watts-per-GB in the overall analysis due to the varying capacities in the test pool.
The Enterprise Performance 15K v5 draws 7.4 watts during the test. The incremental increase in power consumption is more than offset by the much larger addressable capacity of the drive.
We generate IOPS-to-watts measurements from data recorded during the test period. The 15K v5 averages 66 IOPS-per-watt during the write workload and 59 IOPS-per-watt during read activity.
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- Page 1 [Introduction]
- Page 2 [Enterprise Performance 15K HDD v5 Internals and Specifications]
- Page 3 [Test System and Methodology]
- Page 4 [Benchmarks - 4k Random Read/Write]
- Page 5 [Benchmarks - 8k Random Read/Write]
- Page 6 [Benchmarks - 128k Sequential Read/Write]
- Page 7 [Benchmarks - Database/OLTP]
- Page 8 [Benchmarks - Email Server]
- Page 9 [Final Thoughts]
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