128K Sequential Read/Write
The 128K sequential speeds reflect the maximum sequential throughput of the HDD using a file size encountered in normal usage.
The Turbo SSHD leads with a blistering 243 MB/s of sequential read speed, while the Enterprise Performance trails slightly at 242 MB/s. The MK1401 trails by a large margin at 191 MB/s. The odd performance profile of the MK1401GRRB results from the quick travel of the head across the small 147GB platter.
The Turbo SSHD averages 194 MB/s, the Enterprise Performance weighs in at 242 MB/s, while the MK1401 averages 194 MB/s.
In this test, we write sequentially to the entire LBA range of the HDD to explore the performance of the HDD's with sequential activity. The MK1401GRRB is removed from this test due to its lower capacity of only 147GB. The Turbo SSHD manages to provide a faster average speed (black line) than the Enterprise Performance (yellow line). This results in the Turbo SSHD returning to the edge of the platter faster, evidenced by the jump in performance at the end of the test.
The Turbo SSHD performs well in the mixed test, with the exception of the 60-90% range, where it falls behind the competition. The NAND cache is not used for sequential access, so this isn't a surprising result.
The Turbo SSHD averages 7.71 Watts, below the 7.85 of the Enterprise Performance HDD.
The Turbo SSHD leads in the IOPS per MB/s with sequential write access, but falls to second place in the sequential read testing.
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- Page 1 [Introduction]
- Page 2 [Seagate Turbo SSHD Architecture and Specifications]
- Page 3 [Seagate Turbo SSHD Internals]
- Page 4 [Test System and Methodology]
- Page 5 [Exploring Maximum Cache Performance]
- Page 6 [4K Random Read/Write]
- Page 7 [8K Random Read/Write]
- Page 8 [128K Sequential Read/Write]
- Page 9 [Database/OLTP and Fileserver]
- Page 10 [Emailserver and Webserver]
- Page 11 [Final Thoughts]
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