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The title basically says it all. The HP whitepapers simply list Mixed-Use as a general category, but under server quickspecs for most newer HP hardware, Mixed-Use-1 and Mixed-Use-3 options are available (for example, 822559-B21, and 846434-B21 - both are 800GB enterprise SAS 12g SSDs, the sole difference seems to be the 1 or 3).

What does the mixed use number indicate?

Matthew
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Categorized by Read Intensive (RI), Mixed Use (MU), and Write Intensive (WI), you can choose the right SSD that tailors to your workload demands.

The difference between the two SSDs you listed is performance. The MU-3 has higher IOPS potential and write speed than the MU-1.

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ewwhite
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  • This is excellent, thank you! Do you happen to know if there is a difference in MTTF for the two? – Matthew Sep 21 '16 at 17:24
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    Does it matter? If you're buying HP, there's always potential for a drive failure, which could be the result of any number of factors. The point is, you'll have wearout monitoring, hopefully a RAID configuration, and a warranty to replace anything that fails in the 3-year warranty period for the drive/chassis. – ewwhite Sep 21 '16 at 17:26
  • Given the number of disks we will be buying, MTTF actually is kind of important. Several of our datacenters/APOPs are un-manned, and more are guarded so HP techs can't easily enter the premises. Lower MTTF means I will need additional spares on hand for our remote hands-on group. – Matthew Sep 21 '16 at 17:32