Not acording to SAN Disk's documentation.

http://www.sandisk.com/pdf/oem/cf-manual-10.8.pdf

They have 1,000,000 Hours MTBF.  That's ~114 years. (Page 8)

Minimum of 10,000 insertions, so that's not very much on a system that
writes more then a coupple of times a day.

Mounting the file system read only is ok, it's just when the CF gate
states are changed that they loose the ability to retain the state, bad
gates can be mapped around, but you now stand to loose data and corrupt
your CF.

IMHO, CF is the way to go, but either mounting the CF Read Only, or using
a ramdisk image to boot from and MFS as the place for temporary storage...

My wife and I have tried the notebook drives for the Soekris boxes, but
they evently end up cooking thems selfs to death, or uninformed users keep
unpluging them in the middle of a fsck, thus resulting in more damage to
the disk.  There either needs to be more ventilation for the HD to work,
or I may need to look at adding a fan for this setup.

So I would say save your self the hassel, use CF, or if you go with HDs
always keep a spare on hand to ship out, and make backups when changes are
made to the remote devices.

I'm still torn between HD vs CF.  With HD you can get logs, and run
snort/squid with little or no effort.  With a CF it's going to take a
little bit more work to get squid to run out of memory only (or MFS) and
snort will need to log via syslog or something, which when dealing with
small clients, they may not have a syslog server setup, heck the OpenBSD
box maybe the most advanced OS they have on-site.

I've also been trying to get this install/rd_boot to work, but have been
having problems, and have not had time to come back to it.
http://256.com/gray/docs/soekris_openbsd_diskless/


-- 
David Bryan
dave (at) drstrangelove dot net



On Fri, July 15, 2005 8:12 am, knitti wrote:
> current cf cards have 1 million guarranteed write cycles or more.
> i wouldn't do heavy logging with them, but perhaps you can also
> afford to log to another host or to lose logs on power down.
> i think i wouldn't put /var/db/spamd directly on a cf card, perhaps
> you could sync it only every hour?
>
>
>
> --knitti

Reply via email to