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A comment on Intel’s first Optane SSD: 375GB that you can also use as RAM. Parent comment

Re:Intel’s first Optane SSD: 375GB that you can also use as RAM by comboy on Sunday March 19, 2017 @03:25PM (#13909102)
/dev/null is also pretty fast

But for use cases where data matters, fsync seems like a reasonable idea.

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Re:Intel’s first Optane SSD: 375GB that you can also use as RAM by ori_b on Sunday March 19, 2017 @06:14PM (#13909985)
You can also attach batteries to the RAM. This is already a solution people ship in production.
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Re:Intel’s first Optane SSD: 375GB that you can also use as RAM by comboy on Sunday March 19, 2017 @06:47PM (#13910177)
Any references? I tried to find something but I failed. I'm assuming we are talking about something different than UPS + going to sleep? It seems very tricky to just keep RAM powered.
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Re:Intel’s first Optane SSD: 375GB that you can also use as RAM by pkaye on Sunday March 19, 2017 @07:35PM (#13910511)
They are called NVDIMMs. One example http://www.vikingtechnology.com/arxcis-nv

I think some of them are protected by both a battery and flash memory for long term backup.

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Re:Intel’s first Optane SSD: 375GB that you can also use as RAM by dictum on Sunday March 19, 2017 @08:52PM (#13910860)
Storage Search is the best rabbit hole on the subject of RAM SSD that comes to mind. http://www.storagesearch.com/ssd-ram.html

I mean, how else would you get 80 MB/sec? http://web.archive.org/web/20010613164621/http://www.mncurti...

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Re:Intel’s first Optane SSD: 375GB that you can also use as RAM by wmf on Sunday March 19, 2017 @07:01PM (#13910278)
Intel has a reference design for just keeping RAM powered but it's only used in storage controllers, not in any servers you can buy.
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Re:Intel’s first Optane SSD: 375GB that you can also use as RAM by frozenport on Sunday March 19, 2017 @09:02PM (#13910905)
Check out Adaptec RAID controllers. Notice how these guys have an extra battery back so that during critical power failure the large (2GB?) cache is preserved.
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