ACP Processor error for SAS shelf ACP processor 'X'

Applies to

ONTAP 9

Issue

Symptom 1

The following shelf fault errors are displayed:

Sat Mar 19 22:41:51 EST [xxx:ses.status.ACPError:CRITICAL]: DS4246 (S/N XXXXXXXXX) shelf 11 on channel 2c ACP Processor error for SAS shelf ACP processor 2: critical status ; Alternate Control Path hardware failed This module is on the rear of the shelf at the bottom center, on shelf module B.

Sat Mar 19 22:41:54 EST [xxx:monitor.shelf.fault:CRITICAL]: Fault reported on disk storage shelf attached to channel 1b. Check fans, power supplies, disks, and temperature sensors. Sat Mar 19 22:41:54 EST [xxx:callhome.shlf.fault:error]: Call home for SHELF_FAULT

Symptom 2

The STORAGE-ACP logs display the following status:

ACP Connectivity Status: Partial Connectivity

A>      Shelf Module Reset Cnt IP Address FW Version Module Type Status

----------------- ------------ --------------- ------------ ------------ -------

2c.11.B 000  192.168.1.185   02.08   IOM6   inactive (rebooting) 

B>     Shelf Module Reset Cnt IP Address FW Version Module Type Status

----------------- ------------ --------------- ------------ ------------ -------

2c.11.B  000  192.168.1.185  02.08   IOM6   not-responding (last contact at: "Sat Mar 19 22:32:42 EST 2016")

Symptom 3

filer>storage show fault

Enclosure Status: critical

Channel: 1b

Shelf: 11

Shelf Type: DS4246

Product Serial Number: XXXXXXXXX

Module Type: IOM6

. . .

Vendor Unique Element 85-IOM6: (ACP)

Element Status Status Bytes Status Descriptions

1 [IOM6 A] : OK 01,70,00,80

2 [IOM6 B] : CRITICAL 02,00,00,40 FAIL

Symptom 4

filer>environment status shelf

Module type: IOM6; monitoring is active

Shelf status: critical condition

SES Configuration, shelf 11:

. . . .

ACP installed element list: 1, 2; with error: 2