[cisco-voip] [c-nsp] Yanking Compact Flash while the router is up...

[keli at carocomp.ro]

I'd definitely go with planned downtime, instead of experimenting, but  
if you have a prepared flash (same IOS, same configs, same files), it  
might just work.

AFAIK a running router shouldn't really use it's flash. [for the short  
time, while you change it] Whatever is used from the IOS should be  
preloaded in memory at boot (I know a *nix kernel behaves like that, I  
suppose something similar from the IOS, based on the boot-up sequence).

But if your router is so critical, that you don't want to power it off  
for the flash change, I'd experiment on a different router first ... ;)

regards,
   Zoltan

Quoting Ray Burkholder <ray at oneunified.net>:

> Some machines have enough flash built in to accept downgraded IOS.  Swap the
> external flash.  Power up, then upgrade the IOS again.
>
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net
>> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
>> Jonathan Charles
>> Sent: Friday, May 25, 2007 15:45
>> To: ciscovoip; cisco-nsp at puck.nether.net
>> Subject: [c-nsp] Yanking Compact Flash while the router is up...
>>
>> So, I am curious, can you pull a CF card from a 2821 while
>> the router is up and running?
>>
>> We need to replace flaky flash with a new one, but I would
>> rather not have to talk a remote tech (low skillset) through
>> a ROMMON TFTP operation..
>>
>> If not, we can do it the hard way....but I have heard rumors
>> that it works...
>>
>> If it does, what are the risks...
>>
>>
>>
>> Jonathan
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