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HGST Ultrastar SSD800MM Enterprise SSD Review Discussion

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The HGST Ultrastar SSD800MM enterprise SSD is the second 12Gb/s SAS interface SSD available on the market and features co-developed Intel/HGST controller and 25nm MLC NAND. The SSD800MM, which as the name indicates offers up to 800GB of capacity, fits into a new family of drives presented by HGST. The other SSDs in the series are the SSD800MH and SSD1000MR, and the whole line has been designed with the most demanding applications in mind such as big data analytics, high-frequency trading, online banking and cloud computing. On top of that, the SSD800MM is designed to be energy efficient with an option to select between 9W or 11W of power consumption to leverage energy efficiency or performance

HGST Ultrastar SSD800MM Enterprise SSD Review

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How is the power consumption customised? What are the trade-offs, if any?

Is that a 105degC aluminium electrolytic backup capacitor near the semicircular cutout? What is its uF value?

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Can you check your numbers for the OCZ Talos 2C 480GB - 4K 100% read/write [Max Latency] & [st.dev] charts. They look wrong.

Edited by StarCraftPlayer

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Can you check your numbers for the OCZ Talos 2C 480GB - 4K 100% read/write [Max Latency] & [st.dev] charts. They look wrong.

Spotted the problem, we had std deviation figures for both (copied the wrong cell when building the CSV we use to make the charts). The actual max latency is 132ms for write and 48ms for read. I'm getting an updated chart in there ASAP

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BTW, the uF value is printed on the capacitor. A quick voltage measurement would be very enlightening, too. It would tell us a lot about the backup scheme now being employed in enterprise SSDs, and how it differs from consumer grade SSDs. If you don't have a digital multimeter, one can be purchased for US$5. If you don't know how to take a voltage measurement, then read the accompanying instruction booklet. I've taught plenty of novices how to do this.

Here is a cheap DMM (aka Digital Multimeter, US$5):

http://www.harborfreight.com/7-function-multimeter-98025.html

http://manuals.harborfreight.com/manuals/98000-98999/98025.pdf (Product Manual)

If you don't know how to read the numbers off the label of a capacitor, then see this datasheet:

http://www.nichicon.co.jp/english/products/pdfs/e-he.pdf

Notice the "100V 680uF" markings on the image in the top left corner of page #1.

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