Difference between revisions of "Strijker node type details"
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− | The strijker nodes are 2u Dell R515 servers with 12 front-loading disks each. | + | 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. |
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: | 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: |
Revision as of 15:04, 4 November 2015
The strijker nodes are 2u Dell R515 servers with 12 front-loading disks each.
They have a 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.