Credit to @ryanc@infosec.exchange

I just did the graphic

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[–] 26 points 17 hours ago* (7 children)

Yes, swap partitions are shit.

The real hotness is swap drives.

Just the use that your old 64GB SSDs were waiting for!

(Fun fact: in Linux, if you have multiple swap partitions mounted, the kernel will automatically use striping (like RAID) in order to read and write from them as fast as possible. If you have multiple small SSDs used for swap, the read/write speed from swap can actually become pretty fast.)

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  • [–] 2 points 10 hours ago (2 children)

    do you encrypt your swap drive? would this work with LUKS?

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  • [–] 5 points 13 hours ago (3 children)

    How many SSDs do you need for it to match the speed of RAM? Can I use this to make cheap RAM?

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  • [–] 4 points 10 hours ago

    You're going to run into issues with your motherboard's SATA or NVME (or PCIE) controller throughput well before you get close to actual RAM speeds.

    Once you reach that bottleneck, the speed won't increase anymore when you add more drives. The motherboard architecture just doesn't support accessing any kind of storage device at that speed.

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  • [–] 2 points 10 hours ago

    I did a (very) quick search and they should just sum up, so for example a raid of 2 sata SSD with 64gb that can reach 500MB/s will have a total speed of 1GB/s,
    DDR3 ram can get up to 17GB/s so we would need 34 drives to get DDR3 speeds (not very fast BUT you would be the person with most ""RAM"" in the city without being a data center)

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