Pillar Axiom: MaxRep PCP_EVT_REPL_INSUFFICIENT_RETENTION

Asset ID:	1-79-1531140.1
Update Date:	2015-01-18
Keywords:

Solution Type Predictive Self-Healing Sure

Solution 1531140.1 : Pillar Axiom: MaxRep PCP_EVT_REPL_INSUFFICIENT_RETENTION_SPACE

Applies to:

Pillar Axiom Volume Replicator Appliance - Version Not Applicable and later
Pillar Axiom Replication Engine (MaxRep) - Version 2.0 to 2.0 [Release 2.0]
Information in this document applies to any platform.

Purpose

Provide steps for system administrators to resolve PCP_EVT_REPL_INSUFFICIENT_RETENTION_SPACE events.

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Details

Purpose

Event PCP_EVT_REPL_INSUFFICIENT_RETENTION_SPACE is an indication that the MaxRep replication engine has reached its limit for the maximum amount of data that can be stored on the retention LUN on the target MaxRep engine for a particular protection plan. Replicated data gets stored in the retention LUN to allow for the MaxRep engine to rollback the target LUN to historic points in time if necessary. All of this historic data gets stored in the retention LUN of MaxRep engine at the target location of the replication pair. Depending upon the length of time the historic data is maintained, and the change rate of the source LUN in a replication pair, the amount of data stored on the retention LUN can be quite large. A MaxRep can reach its retention space limit for two reasons:

A protection plan has reached is allowable limit of retained data as defined in the protection plan creation process.
The retention LUN has reached its maximum capacity.

Troubleshooting Steps

Log into the MaxRep Engine UI
Select the “Monitor” tab and select the protection plan on “Protection Health” window.
In the “Disks/Volumes/LUNs Replication” table, select “Details.”
Review the Retention Settings “Disk Space Threshold” percentage.
If the percentage listed is at or near 100%, the fault is valid. If the fault is valid, proceed to options below. If the “Capacity Utilization” is significantly less than 100%, then the fault is NOT valid. If the fault is not valid, lease contact the TSC.

If the fault is valid there are three options to resolve the issue:

Modify the retention settings for the Protection Plan to retain data for a shorter period of time or increase the allowable retention amount.
Modify the retention settings for the protection plan to utilize sparse bookmarks in order to reduce the amount of data being stored on the retention LUN. See the MaxRep User’s Guide for additional information on the proper utilization of MaxRep sparse bookmarks feature.
Add additional retention LUN space.If you wish to increase the retention LUN space available for protection plans to utilize, follow the steps listed below to promote the DraftSR into a formal Service Request.

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