Drive caching
28 minutes ago, ASXCyphin said:A drive has a cache to catch a bunch of information until it can be written to the HDD or SSD or NVMe. The cache operates at speeds faster than the non-volatile memory or spinning platter operates at, but eh cache is limited in size and is volatile memory. If the drive loses power, all the information in the cache is gone.
I wouldn't say a bunch. This really depends on the drive, but there are drives with less than 1 mB of cache, and they work fine. Most of the dram on a ssd is used for the table that connects the logical sector to the location on nand.
30 minutes ago, ASXCyphin said:Does the volatile cache memory in a SATA III SSD have to meet a minimum speed requirement to be considered SATA III compliant?
Nope, no requirement, it just has to be able to communicate following the sata III protocol, same with nvme. The protocol doesn't care about the cache on the drive
33 minutes ago, ASXCyphin said:Are there standards for drive caches?
How exactly, and why would a standard matter. It only talks to the controller, so it doesn't matter how it connects.
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