Question 7
A customer needs to use a Disaster Recovery (DR) site for replication. The customer provides the following information:
Volumes to replicate: 1
Volume size (total): 1.5 TB
Total data set size: 1 TB
Change rate: Averages 10% per hour
After setting up replication, the customer monitors the results. The volume replicates successfully only about 75% the time. The remaining time, no data is replicated. Although some replications have failed, no user intervention has occurred. The replication works on subsequent intervals.
Which action should be taken to ensure reliable replication?
increase the replica reserve on the target array
increase the delegated space on the target array
increase the local replica reserve
Correct answer: C
Explanation:
If there is not enough free local replication reserve to complete a replication operation, one of the following occurs:If you did not enable the option to borrow free pool space, or if you enabled the option, but there is not enough free pool space, the primary group cancels the replication and generates an event message, stating that the replication was canceled. If you enabled the option to borrow free pool space, and sufficient free pool space is available (at least 10% free pool space), replication continues. The primary group generates an informational message, specifying that it is temporarily using free pool space during the replication. References: http://psonlinehelp.equallogic.com/en/V6.0/groupmanager.htm (About Local Replication Reserve)
If there is not enough free local replication reserve to complete a replication operation, one of the following occurs:
If you did not enable the option to borrow free pool space, or if you enabled the option, but there is not enough free pool space, the primary group cancels the replication and generates an event message, stating that the replication was canceled.
If you enabled the option to borrow free pool space, and sufficient free pool space is available (at least 10% free pool space), replication continues. The primary group generates an informational message, specifying that it is temporarily using free pool space during the replication.
References: http://psonlinehelp.equallogic.com/en/V6.0/groupmanager.htm (About Local Replication Reserve)