I have hda8 and hdb1 striped in a raid array but the system keeps locking up. for some reason while its running hdb1 is failing. anyone had this experience before. i suspect it could be a heat problem but the pc is another state and im trying to troubleshoot through ssh. so i cant exactly reach out and touch the drive.

/var/log/messages. the raid part.
kernel: md: autorun ...
kernel: md: considering hda8 ...
kernel: md: adding hda8 ...
kernel: md: created md0
kernel: md: bind<hda8,1>
kernel: md: running: <hda8>
kernel: md: hda8's event counter: 0000000e
kernel: md0: former device hdb1 is unavailable, removing from array!
kernel: kmod: failed to exec /sbin/modprobe -s -k md-personality-2,errno =2

kernel: md: personality 2 is not loaded!
kernel: md :do_md_run() returned -22
kernel: md: md0 stopped.
kernel: md: unbind<hda8,0>
kernel: md: export_rdev(hda8)
kernel: md: ... autorun DONE.

heres what it normally says
md: autorun ...
md: considering hdb1 ...
md: adding hdb1 ...
md: adding hda8 ...
md: created md0
md: bind<hda8,1>
md: bind<hdb1,2>
md: running: <hdb1><hda8>
md: hdb1's event counter: 0000000e
md: hda8's event counter: 0000000e
md0: max total readahead window set to 512k
md0: 2 data-disks, max readahead per data-disk: 256k
raid0: looking at hda8
raid0: comparing hda8(180000192) with hda8(180000192)
raid0: END
raid0: ==> UNIQUE
raid0: 1 zones
raid0: looking at hdb1
raid0: comparing hdb1(199141632) with hda8(180000192)
raid0: NOT EQUAL
raid0: comparing hdb1(199141632) with hdb1(199141632)
raid0: END
raid0: ==> UNIQUE
raid0: 2 zones
raid0: FINAL 2 zones
raid0: zone 0
raid0: checking hda8 ... contained as device 0
(180000192) is smallest!.
raid0: checking hdb1 ... contained as device 1
raid0: zone->nb_dev: 2, size: 360000384
raid0: current zone offset: 180000192
raid0: zone 1
raid0: checking hda8 ... nope.
raid0: checking hdb1 ... contained as device 0
(199141632) is smallest!.
raid0: zone->nb_dev: 1, size: 19141440
raid0: current zone offset: 199141632
raid0: done.
raid0 : md_size is 379141824 blocks.
raid0 : conf->smallest->size is 19141440 blocks.
raid0 : nb_zone is 20.
raid0 : Allocating 160 bytes for hash.
md: updating md0 RAID superblock on device
md: hdb1 [events: 0000000f]<6>(write) hdb1's sb offset: 199141632
md: hda8 [events: 0000000f]<6>(write) hda8's sb offset: 180000192
md: ... autorun DONE.

If you think it is heat (I do too), have someone at the site take a cpu or case fan on it. I had one that failed due to heat, all I did was just stick a cpu fan in front of it to keep it cool.