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Seagate Enterprise Performance 15K HDD v4 450GB Enterprise Review

By: Paul Alcorn | HDDs in IT/Datacenter | Posted: Oct 21, 2014 1:03 pm
TweakTown Rating: 95%Manufacturer: Seagate

Enterprise Performance 15K HDD v4 Internals

 

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The Enterprise Performance 15K HDD v4 comes in the 2.5" form factor.

 

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A foam pad between the case and the PCB helps absorb vibration, and the drive controller and motor controller have thermal pads to shed heat into the case of the drive. There are angled accelerometers on the upper left, and lower right of the PCB. The Samsung DRAM chip occupies the middle of the PCB, and several capacitors are on the upper left.

 

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The Marvell I 1062-B0 controller is flanked by the 128MB multi-segmented cache package. A SMOOTH motor controller is on the upper left.

 

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The Enterprise Performance v4 utilizes a 6Gb/s SAS connection.

 

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Idle power consumption is a pain point in the datacenter. The Seagate Enterprise Performance 15K HDD v4 utilizes PowerChoice Technology, Seagate's proprietary implementation of the T10/T13 Approved Standard. PowerChoice provides four enhanced idle modes that place the drive into deeper quasi-sleep cycles to conserve power. The feature is enabled with a SAS Mode Page, or SATA Set Feature command states triggered by the length of drive inactivity. There is also the option for immediate host-initiated power transitions in a typical implementation. Once enabled, PowerChoice places the drive into successively deeper idle states with SAS/SATA commands, but each consecutive sleep mode requires more time for resumption. We did not test with enhanced PowerChoice states enabled.

 

The Enterprise Performance 15K HDD v4 averages a seven watt power draw during the idle power state. It is important to note this measurement is without PowerChoice technology activated; the drive can idle lower when using PowerChoice. The 450GB 15K v4 features more capacity than the 147GB and 300GB competitors do; on an idle watts-per-GB basis the 15K v4 offers very competitive idle power consumption metrics.

 

 

Enterprise Performance 15K HDD v4 Specifications

 

The 12Gb/s Seagate Enterprise Performance 15K HDD v4 HDD we are testing today is the 512e variant with the ST450MP0004 part number. There are 4K, 512n, SED, and FIPS variants available with varying part numbers.

 

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