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Micron P420m 1.4TB PCIe Enterprise SSD Review

By: Paul Alcorn | PCIe SSDs in IT/Datacenter | Posted: Sep 13, 2013 9:16 pm
TweakTown Rating: 92%Manufacturer: Micron

Micron P420m Specifications




The HHHL cards do not require external power connections to power the controller, easing cabling requirements, and keeping heat output low with an economical power draw of 22W RMS for the 700GB and 30W RMS for the 1.4TB. The 1.4TB capacity point can be limited to 25W via a power-throttling feature. The 2.5" 350GB pulls 14W and idles at 7W, while the 700GB consumes 22W active and 8W idle.


Airflow is spec'd at 1.5 M/s at an operating temperature of 0 to 50C. In the event of temperatures exceeding this threshold, thermal throttling kicks in until temperatures fall into an acceptable range. The cards feature an MTTF of 2.0 million hours, and an Uncorrectable Bit Error Rate (UBER) of 1 per 10E17.


The inclusion of power capacitors flushes data to the lower pages of the NAND in the event of a host power-loss event.



RealSSD Manager




An important facet of any product is ease of use. One of the greatest advantages of the P420m is the ability to simply slip in a card that provides huge increases in performance. Managing the card begins after installation, and over the service life of the unit an easy to use management interfaces is key.


The P420m is managed through the RealSSD Manager (RSSDM) utility. This easy to use GUI simplifies many drive management tasks such as secure erasing, temperature monitoring, firmware updates and coalescing settings. The P420m supports three interrupt settings to customize the drive for its environment. There are two "High IOPS" options with medium and aggressive timeouts, and a setting for latency sensitive environments.


The utility also provides device monitoring and allows users to graph the read and write throughput and temperature. There is also access to the SMART data for the drive, which allows users to predict the expected lifetime of the device. Micron also provides a CLI utility, which is handy for those that are using servers without graphical interfaces.


The addition of remote management capability fixes a key weakness of the earlier versions of the RSSDM. Another new feature is the ATA8 ACS2-compliant Sanitize command. While the typical secure erase feature deletes all data, determined individuals can still recover some data. The Sanitize command ensures total data destruction.


Many of the application accelerators on the market do not include such refined management tools, and Microns continued refinement of the user interface provides an advantage over competing solutions.

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