Difference between revisions of "Strijker node type details"

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The strijker nodes are [http://downloads.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_poweredge/poweredge-r515_Owner%27s%20Manual_en-us.pdf 2u Dell R515] servers with 12 front-loading disks each.
This page [https://wiki.nikhef.nl/nikhef/ctb/NDPF:Strijker_Node_type_details has been moved] to the internal wiki.
They have a [http://www.dell.com/downloads/global/products/pvaul/en/perc-technical-guidebook.pdf PERC H700 Integrated] RAID controller, which can be managed by the MegaRAID Storage Manager software:
/usr/local/MegaRAID\ Storage\ Manager/StorCLI/storcli64 /c0 show all
The Nagios sensor in /usr/local/lib/nagios/plugins/check_lsi_raid checks the state of the controller with a somewhat poorly documented command:
/opt/MegaRAID/storcli/storcli64 adpallinfo a0
Where 'a0' stands for controller 0.
The output of this command contains a summary of the controller status, of which one block is particularly interesting:
                Device Present
Virtual Drives    : 2
  Degraded        : 0
  Offline        : 0
Physical Devices  : 16
  Disks          : 14
  Critical Disks  : 1
  Failed Disks    : 0
The 'Critical Disks' here shows there is a disk failing or about to fail. Although individual disk info can be retrieved e.g. with
storcli64 /c0/e32/sall show all
This doesn't directly say that a disk is critical; one has to infer this from the error counts, e.g.
Drive /c0/e32/s5 State :
Shield Counter = 0
Media Error Count = 46
Other Error Count = 137
Drive Temperature =  36C (96.80 F)
Predictive Failure Count = 34
S.M.A.R.T alert flagged by drive = Yes
Visual inspection of the machine will show a blinking led on the failing disk. The numbering of the disks is top to bottom, then left to right with the top left position 0.

Latest revision as of 11:27, 13 April 2018

This page has been moved to the internal wiki.