[j-nsp] Failures in HD-only M7i routers

[Hyunseog Ryu]

Given the price of flash memory, I will install flash disk if I were you.
I don't know why Juniper didn't include it from start.

Hyun


----- Original Message -----
From: Raniery Pontes [raniery at rnp.br]
Sent: 09/28/2007 06:02 PM ZW3
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] Failures in HD-only M7i routers




Hi everybody,

  we´ve been running different M-series boxes including ~20 M7i´s. In 
the last 12 months, we had an issue with 3 of these M7i´s: they crashed 
and couldn´t recover "by themselves". These failures happened usually in 
association to power failures in facilities, and logs also indicate 
problems when writing to the hard-disk.

These boxes only have a hard-drive as storage media, so there isn´t a 
flash memory in the routers.

After the crash, usually we´ve seen these routers continuously trying to 
boot from HD, but without success. Then, we had to disconect power, take 
a breath (it´s serious, about 5 minutes long) and power up the router 
again. After that, theses routers were able to recover, loading Junos 
correctly.

Disregarding what may have have caused these crashes, I´m worried about 
the recovering capacities of these boxes, after a crash.

So, I´ve got a simple questions: how dangerous is to run these boxes, 
without a flash card ?

I´d like to know if everybody thinks this is a really bad idea, or it 
shouldn´t be really an issue and I simply had bad luck.


Thanks

-- 
Raniery Pontes
::::::::::::::::::::::
raniery at rnp.br
http://www.rnp.br/ceo/

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