Question Is it possible to use RAM cache of a RAID controller as a RAM disk?

Genralkidd

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Apr 18, 2013
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I saw that some types of PCIe RAID controllers have slots for RAM and a battery backup for that RAM. I know this is meant to be used a read/write cache but is it also possible to somehow use that RAM cache as a hardware RAM disk? There used to be PCI RAM disk cards that would do something similar but I haven't seen any dedicated RAM disks for the PCIe era.
 
I saw that some types of PCIe RAID controllers have slots for RAM and a battery backup for that RAM. I know this is meant to be used a read/write cache but is it also possible to somehow use that RAM cache as a hardware RAM disk? There used to be PCI RAM disk cards that would do something similar but I haven't seen any dedicated RAM disks for the PCIe era.
No, that cache ram is just between controller and disk.
 
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