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This morning, I just got a Nagios alarm because of:

BRUBLUst01:/usr/local/bin# /opt/MegaRAID/MegaCli/MegaCli64 -PDList -a0

Adapter #0

Enclosure Device ID: 32
Slot Number: 0
Device Id: 0
Sequence Number: 2
Media Error Count: 1
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
Raw Size: 715404MB [0x575466f0 Sectors]
Non Coerced Size: 714892MB [0x574466f0 Sectors]
Coerced Size: 714880MB [0x57440000 Sectors]
Firmware state: Online
SAS Address(0): 0x1221000000000000
Connected Port Number: 0(path0)
Inquiry Data: ATA ST3750640NS 3BKS 5QD3ZT7W

I found the meaning of other error count but not media error count, doesn't looks like MegaCLI is really well documented. What does this means? A broken sector on a disk? Should I care?

Thanks for your help,

1 Answer 1

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It's the number of SMART errors on the physical disk.

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  • 2
    Can you be more specific?
    – Totor
    Jun 27, 2017 at 9:36
  • S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology; often written as SMART). See en.wikipedia.org/wiki/S.M.A.R.T.
    – mateuszb
    Nov 12, 2020 at 20:22

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