Re: Lifetime of flash memory

"linux-os \(*** Johnson\)" <linux-os@xxxxxxxxxxxx> writes:

On Mon, 27 Mar 2006, Sergei Organov wrote:

"linux-os \(*** Johnson\)" <linux-os@xxxxxxxxxxxx> writes:
[...]
CompactFlash(tm) like SanDisk(tm) has very good R/W characteristics.

Try to write 512-byte sectors in random order, and I'm sure write
characteristics won't be that good.

It consists of a connector that exactly emulates an IDE drive connector
in miniature, an interface controller that emulates and responds to
most IDE commands, plus a method of performing reads and writes using
static RAM buffers and permanent storage in NVRAM.

Are you sure they do have NVRAM? What kind of NVRAM? Do they have backup
battery inside to keep NVRAM alive?


NVRAM means [N]on-[V]olatile-[RAM]. Any of many types, currently NAND flash.
No battery required.

But NAND FLASH, while it is NV(Non-Volatile) *is not* RAM (Random Access
Memory), sorry. So it seems there is no NVRAM inside CFs, right?

-- Sergei.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/