[j-nsp] High failure rates for M7i/M10i hard disks?

Michael Loftis mloftis at wgops.com
Sun Aug 21 01:54:24 EDT 2005

--On August 20, 2005 8:23:55 AM +0000 Randy Bush <randy at psg.com> wrote:

> why use movable parts, other than fans, in your routers?
Flash cards fail pretty quickly in the mode of use that they'd see from a 
Juniper if used as the sole storage medium.  The reason is the local logs. 
If everything were run from ram save to flash or something like that it 
wouldn't be so bad, or just run from flash, no local logs, it wouldn't 
either.  Not that one can't make a juni work like that, it's just that, out 
of the box, they don't.  honestly not sure what else would have to be 
changed so that writes to flash were avoided unless needed for permanent 

flash devices just don't survive the write/rerwrite thing very well...and 
some types of flash are very slow at writing.

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