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ZEDA
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what is difference flash vs nand?

Sun Sep 18, 2016 11:10 pm

Hi!
please help me and describe what is difference between flash and nand storage in Routerboard?
I search in google but i found "nand flash" vs "nor flash".
and this tow type storage how many have write cycle ?
excuse me for bad english
thank you
 
IntrusDave
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Re: what is difference flash vs nand?

Mon Sep 19, 2016 2:14 am

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ZEDA
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Re: what is difference flash vs nand?

Mon Sep 19, 2016 11:05 am

Thank you
but this is that I founded in google
that is compare "nor flash" vs "nand flash"

but in routerboard.com only write "flash" or "nand" not explaine what is flash.
and not explain how many write cycle each have
 
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vozglobal
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Re: what is difference flash vs nand?

Wed Oct 17, 2018 10:16 am

Thank you
but this is that I founded in google
that is compare "nor flash" vs "nand flash"

but in routerboard.com only write "flash" or "nand" not explaine what is flash.
and not explain how many write cycle each have
hello, you found an answer, for this case.

I am investigating on the subject, and still can not find an answer
 
Theking2
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Re: what is difference flash vs nand?

Tue May 04, 2021 9:16 pm

I like to know the same thing.

What is the difference between these:
flash-boot -
flash-boot-once-then-nand -
nand-if-fail-then-ethernet -
nand-only -
try-ethernet-once-then-nand -

There seems to be an option to boot from flash or from nand (or from a bootp server)
What is the difference between boot from flash and from nand. If the firmware is updated does this relate to flash only or to nand only or to both?
 
mada3k
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Re: what is difference flash vs nand?

Tue May 04, 2021 9:56 pm

Generally...

NOR Flash is limited to 16MB, but it exists 32M and 64M as well. NAND Flash can be several gigabytes.
NOR Flash is like a SD-card or SSD-drive. It's a self-contained device manages itself (mapping, wear-leveling, error-handling etc.) and is mostly used for loading firmware or boot image.
NAND Flash is "raw flash" that needs a controller to manage it. It's useless without something that manages it (like a controller in a SSD-drive)
 
icsterm
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Re: what is difference flash vs nand?

Fri Sep 10, 2021 7:58 am

I would also like to know if flash-boot means USB boot.
The wiki does not explain anything about the difference between nand-boot and flash-boot.

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