Either as an appliance, or with a SAS, SATA or PCI interface. Use a dedicated physical drive for it with volatile (dynamic) memory.Note that there are way more ways of doing this than just by creating a RAM disk in the common work memory. Here are two examples of low end RAM disk cards which made it into production: (Mostly used in corporate databases before SSD’s became an option). Even as PCI board with DIMM sockets and as appliances for very high IOps. Having said that: Yes, RAM disks do exist. 18GiB, and enough to store the data you expect to use). Lastly, you will also need RAM to run your programs in, so you will need the normal RAM size to work in (e.g.(More board space means more costs, thus higher prices.) To use so much RAM, your motherboard will need a lot of DIMM sockets and the traces to them.RAM uses more power (say 2–3 Watt per DIMM, about the same as an idle SSD).Say you use a SSD sized RAMDISK of 100GB, that means about two minutes delay while 100GB are copied from the disk. Thus you would need to reload the content at boot time. RAM loses its contents when powered off.Especially if you want to buy relatively large DIMMs. Common desktop (DDR3) RAM is cheap, but not quite that cheap.There are a few reasons RAM is not used that way: SuperUser contributor Hennes offers some insight into why we still use disk-based systems: On the surface his inquiry makes sense, but clearly we’re not awash in RAM-based computer builds what’s the back story? The Answer Of course, current operating system may not support this at all, but is there any reason RAM isn’t used this way? So why don’t computers have a LOT of RAM, and on power up, load everything to the RAM from the hard drive/SSD and just run everything from there, assuming there’s no real need to persist anything outside of memory? Wouldn’t computers be much faster?
SuperUser reader pkr298 wants to know why we’re not running RAM-based, instead of disk-based, machines.
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