Dell Unity: Storage Processor Rescue Reason Error Code: 0x1b01

One or both Storage Processors may be in Service Mode with the following Rescue Reason:

======== Now executing basic state ========
* System Serial Number is: APM00172106812
* System Friendly Host Name is: (none)
* Current Software version: Unable to determine full software version.
* Unisphere IP address(es): 10.90.24.250 fe80::260:1600:47e0:2a26
* FIPS mode: Disabled
* Boot Mode: Rescue Mode
* Post Faults:  0x0000
* Backend Faults:       0x0000
* Boot Faults:  0x1b00
* Rescue Reason:        0x1b01
* Rescue reason for code 0x1b01 - There is a problem with the system software on this Storage Processor. To attempt to correct this problem, first run Data Collection, and then try the following in order: Check all cables, reboot each SP, and reimage each Storage Processor (SP). If this does not resolve the issue, contact your service provider.

The following additional error codes and messages may also be generated during this issue:

• ERROR" "1:1678040
• Storage Processor SP B has faulted and is in Service Mode with reason code 6913
• Storage Processor SP A has faulted and is in Service Mode with reason code 6913
• SERVICE_ERR_0x1b01

The sep module in the safe service typically causes this issue. For evidence of this, review the following logs locations:.

/EMC/C4Core/log/start_c4.log:

Wed Sep 27 19:00:53 2017: start_c4.pl:  *****************************************************
Wed Sep 27 19:00:53 2017: start_c4.pl:  * Error Detected SP Degraded Mode after sep started.
Wed Sep 27 19:00:53 2017: start_c4.pl:  * Incrementing SOFTWARE boot counter
Wed Sep 27 19:00:53 2017: start_c4.pl:  * Driver rrchc code: 0x1b01
Wed Sep 27 19:00:53 2017: start_c4.pl:  *****************************************************

/var/log/boot.out:

2017-09-29 18:36:31.598 ===== bringup_backend =====
2017-09-29 18:36:32.105 Loading mirror driver
2017-09-29 18:36:37.787 read degraded mode bit from nvram and check if sep is degraded
2017-09-29 18:36:37.996 MCR database degraded mode:  00000001
2017-09-29 18:36:38.332 1
2017-09-29 18:36:39.064 =================================================================
2017-09-29 18:36:39.068 ===   ***  Going into service mode because of a fault  ***    ===
2017-09-29 18:36:39.072 =================================================================
2017-09-29 18:36:39.082 === When escalating to platform services, please make sure to ===
2017-09-29 18:36:39.086 === include the messages ABOVE this notice. You can ignore    ===
2017-09-29 18:36:39.090 === any errors below.                                         ===
2017-09-29 18:36:39.094 =================================================================

Contact Dell Technical Support or your Authorized Service Representative and quote this Dell Knowledge Base article ID.