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

[Javier Gallardo (DF/TEM)]

Hi, we had similar problem but at M40 router. It was the same behavior after to the failure: the router does not switch to the backup RE and was recovered after to toggle power but booting from flash because the HD was not mounted.
Too, the RE was RMAed.

Is it a endemic problem for new routers?.

Regards.
//Javier

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net]On Behalf Of
sthaug at nethelp.no
Sent: Sábado, 20 de Agosto de 2005 02:39 a.m.
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] High failure rates for M7i/M10i hard disks?


We have around 25 M7i/M10i in production, and we have had 3 hard disks
fail during the last year. The last instance was rather ridiculous - M7i
with failed hard disk, we RMAed the RE, it was swapped - and after one
week, the new hard disk failed also.

When the hard disks have failed, they have failed in such a way that the
rest of the ruter ceases functioning. We *assume* this is because the
hard disk problem ties up the CPU so much (interrupts or otherwise) that
the RE cannot generate the necessary protocol keepalives - thus the
routing protocols go down. Pinging the router from a connected network
still works, but we're unable to login to the box. Powering the box off
and on again brings it up, running from from compact flash only (the
hard disk is not detected on boot).

Has anybody else seen similar problems?

Steinar Haug, Nethelp consulting, sthaug at nethelp.no
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