Good point. But the problem is the robot is not within the wireless range all the time. On Mon, 2003-04-28 at 14:41, Michael Harris wrote: > > Sounds pretty cool. No idea what your hardware is like but for about $50 > you could setup wireless ethernet with NFS boot and run diskless. Just looking > at Compusa's site now they have a wireless access point for $30 and a PCI adapter > for $22 (part nums 50203595 and 295105). > > > > Hi All, > > > > I need some advice on finding a solution to this problem . I have a hard > > disk mounted on a mobile robot. I am using ext3 fs. The hard disk is > > subjected to several bumps as the robot travels. I am experiencing > > frequent hard disk failure ( about once a month). I have thought about > > 2 different solutions to this problem. I would appreciate any tips on > > evaluating them > > > > 1) Use Compact Flash cards: This is a an easy solution. However, I need > > about 1GB of space. 1GB CF cards cost about $300. There is the issue of > > CF wear. The cost is the major con of this approach. > > > > 2) Using Ram disk. > > > > * Create 1 or 2 ram disks on boot. > > * Mount the stuff that gets written ( /var/log, /tmp, some /etc related > > to ssh) on the ram disk. ) > > * Put the hard drive to sleep, while the robot is in motion. > > * Sync the logs from the ram disk to the hard drive, when the robot is > > stationary. > > > > Approach 2 assumes that, if the hard drive is sleeping while in motion, > > it will not be damaged. Is this true ?? > > > > Does approach 2 sound reasonable? Any other tips/suggestions/criticism > > > > Thanks! > > Rahul > > > > > > > > > > > > _______________________________________________ > > > > Ext3-users@redhat.com > > https://listman.redhat.com/mailman/listinfo/ext3-users > _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users
