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I need a disk array like those which we can just add a new hard disk but using sd cards rather than disk. Does it exist?
https://upload.wikimedia.org/wikipedia/commons/thumb/6/6b/HP_EVA4400-1.jpg/440px-HP_EVA4400-1.jpg (something like this but with sd cards or micro sd cards)
You could buy a 4-port SD card hub for ~US$63.
However, you could easily make your own: SD card readers are available for less than $US2, and a 4-port USB hub for ~US$6, so you could assemble a similar 4-SD card hub for
You don't state your purpose, so it's hard to understand what you need.
If you're trying to make copies of SD cards, e.g. as OS for a batch o microprocessors, there are SD drive duplicators.
If you're trying to simulate a "drive carousel" or CD/DVD array, be aware that flash memory is much slower than SDD or HDD, and more expensive than HDD. A large HDD could be partitioned into a virtual array of disks.
