At work we use Siemens Mircobox 427 PC's to control machines. They have a heat sink on the back and don't have a fan. Some of them are using compact flash for a hard drive and we use EWFMGR Enhanced Write Filter Manager to protect the CF cards because of the way windows is always writing to the hard drive, damaging CF cards in a few months. If you use EWF on the C: drive and store data to the D: drive it will prevent you from losing data changes on every reboot. I'm not sure if Linux has an equivalent to Windows Enhanced Write Filter but perhaps. Also, since this is about the reliability subject, I should mention that we had 10-12 Siemens MicroBox failures within the last year and only 1 Allen Bradley PLC processor, and we probably have 5 times as many AB PLC's as we do Siemens MicroBox PC's and the Allen Bradley PLC's are several years older than the MicroBox PC's. In other words, the Siemens MicroBox doesn't seem to qualify as an Untra-reliable PC!
Roger Neal ----- Original Message ----- From: "Ian W. Wright" <[email protected]> To: "Enhanced Machine Controller (EMC)" <[email protected]> Sent: Saturday, October 23, 2010 4:51 PM Subject: Re: [Emc-users] OT ultra-reliable, long life PC > FWIW, I've had to replace the SSD in my son's quite > expensive notebook twice in less than 15 months. I've seen a > couple of articles saying how they have only a limited > number of read/write cycles before they are lible to fail - > I don't think I'd like to trust important data to one yet... > > Ian >>> I have a SSD in my office computer for the fantastic speed. However it >>> did fail after less than 6 months which is rather worrying. It was >>> replaced under warranty but it doesn't bode well for long term life. > > > ------------------------------------------------------------------------------ > Nokia and AT&T present the 2010 Calling All Innovators-North America > contest > Create new apps & games for the Nokia N8 for consumers in U.S. and Canada > $10 million total in prizes - $4M cash, 500 devices, nearly $6M in > marketing > Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store > http://p.sf.net/sfu/nokia-dev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
