• 2009-09-15T14:35:36 NFS issues; ls: cannot access /data/ipp051.0: Input/output error ; rebooted by gavin
• 2009-09-18T16:32:55 Degraded unit: unit=0, port=18 (replaced)
• 2010-01-05T16:20:30system unresponsive, ganglia load​, memory​, cpu​, power cycled by gavin
• 2011-5-12 5:37:16 Controller#1(PCI) IDE Channel # 9 Reading Error
• 2011-07-06T11:26:14 system unresponsive, nothing on console, power cycled by gavin
• 2011-07-07T03:28:44 system unresponsive, nothing on console, power cycled by gavin (2011-07-07T08:38:30)
• 2011-10-03T23:48:00 system crash, console information shows the same kind of error as on ipp026:

  <Oct/04 08:39 am>ipp029 login: [7653866.118158] 
  <Oct/04 08:39 am>[7653866.118158] HARDWARE ERROR
  <Oct/04 08:39 am>[7653866.118158] CPU 5: Machine Check Exception:                4 Bank 0: b200004000000800
  <Oct/04 08:39 am>[7653866.118158] TSC 56ca1938fc43b0 
  <Oct/04 08:39 am>[7653866.118158] This is not a software problem!
  <Oct/04 08:39 am>[7653866.118158] Run through mcelog --ascii to decode and contact your hardware vendor
  <Oct/04 08:39 am>[7653866.118158] 
  <Oct/04 08:39 am>[7653866.118158] HARDWARE ERROR
  <Oct/04 08:39 am>[7653866.118158] CPU 7: Machine Check Exception:                5 Bank 0: b200004000000800
  <Oct/04 08:39 am>[7653866.118158] RIP !INEXACT! 10:<ffffffff80212604> {mwait_idle+0x41/0x44}
  <Oct/04 08:39 am>[7653866.118158] TSC 56ca1938fc43a0 
  <Oct/04 08:39 am>[7653866.118158] This is not a software problem!
  <Oct/04 08:39 am>[7653866.118158] Run through mcelog --ascii to decode and contact your hardware vendor
  <Oct/04 08:39 am>[7653866.118158] 
  <Oct/04 08:39 am>[7653866.118158] HARDWARE ERROR
  <Oct/04 08:39 am>[7653866.118158] CPU 7: Machine Check Exception:                5 Bank 5: b200120020080400
  <Oct/04 08:39 am>[7653866.118158] RIP !INEXACT! 10:<ffffffff80212604> {mwait_idle+0x41/0x44}
  <Oct/04 08:39 am>[7653866.118158] TSC 56ca1938fc4fd8 
  <Oct/04 08:39 am>[7653866.118158] This is not a software problem!
  <Oct/04 08:39 am>[7653866.118158] Run through mcelog --ascii to decode and contact your hardware vendor
  <Oct/04 08:39 am>[7653866.118158] 
  <Oct/04 08:39 am>[7653866.118158] HARDWARE ERROR
  <Oct/04 08:39 am>[7653866.118158] CPU 5: Machine Check Exception:                4 Bank 5: b200120014040400
  <Oct/04 08:39 am>[7653866.118158] TSC 56ca1938fc5098 
  <Oct/04 08:39 am>[7653866.118158] This is not a software problem!
  <Oct/04 08:39 am>[7653866.118158] Run through mcelog --ascii to decode and contact your hardware vendor
  <Oct/04 08:39 am>[7653866.118158] Kernel panic - not syncing: Machine check
  <Oct/04 08:39 am>[7653866.118158] ------------[ cut here ]------------
  <Oct/04 08:39 am>[7653866.118158] WARNING: at kernel/smp.c:333 smp_call_function_mask+0x37/0x1d7()
  <Oct/04 08:39 am>[7653866.118158] Modules linked in: coretemp w83627hf w83793 hwmon_vid k8temp autofs4 i2c_i801 i2c_core iTCO_wdt e1000e tg3 libphy e1000 xfs dm_snapshot dm_mirror dm_region_hash dm_log aacraid 3w_9xxx 3w_xxxx atp870u arcmsr aic7xxx scsi_wait_scan
  <Oct/04 08:39 am>[7653866.118158] Pid: 26053, comm: ppSub Tainted: G   M    W  2.6.28-rc7-00105-gfeaf384 #4
  <Oct/04 08:39 am>[7653866.118158] Call Trace:
  <Oct/04 08:39 am>[7653866.118158]  <#MC>  [<ffffffff802397db>] warn_on_slowpath+0x51/0x6d
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff803eec86>] notify_update+0x2b/0x30
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff8025bc31>] smp_call_function_mask+0x37/0x1d7
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff80264013>] crash_kexec+0x17/0xef
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff802640e2>] crash_kexec+0xe6/0xef
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff8021d53e>] native_smp_send_stop+0x1a/0x26
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff80239896>] panic+0x95/0x13f
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff80239d5d>] release_console_sem+0x3e/0x1a5
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff80239d5d>] release_console_sem+0x3e/0x1a5
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff80239d5d>] release_console_sem+0x3e/0x1a5
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff805b9e66>] __atomic_notifier_call_chain+0x74/0x83
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff805b9df2>] __atomic_notifier_call_chain+0x0/0x83
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff80217b55>] mce_log+0x0/0x7f
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff80217eef>] do_machine_check+0x2d5/0x378
  <Oct/04 08:39 am>[7653866.118158]  [<ffffffff8020d04f>] machine_check+0x7f/0x90
  <Oct/04 08:39 am>[7653866.118158]  <<EOE>> <4>---[ end trace 4eaa2a86a8e2da22 ]---