# math

posted by .

Suppose you have a 64 gigabyte flash storage system, with a 4096 byte page size. How big would the flash translation table be, assuming each page has a 32 bit address, and the table is stored as an array.

I think the answer is 20 pages, does that sound about right?

• math -

Not quite.

Each address requires 32 bits, or 4 bytes.
The array size would therefore be 16MB*4=64MB.
If they have to be expressed in pages, then the number of pages
= 64MB/4K
= 16K pages.

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