A customer configured performance monitoring and alerting for their VNX storage array.
Periodically they are getting alerts on write latency greater than 15 ms. The VNX is configured with
a pool of SAS drives and thin LUNs supporting a database application. NAR data, for a given
period which includes one of the alerts, is examined. Flash drives are installed in the VNX;
however, they are not currently used.
Examining the configuration and data shows the following:
— Host Type = Linux
— Multi-pathing = Native
— Failover Mode = 1
— Data LUNs = SP A
— Log LUNs = SP B
— LUN Queue Length = 1.9
— ABQL = 7.5
How can the performance issue be resolved?
![PrepAway - Latest Free Exam Questions & Answers](https://www.briefmenow.org/img/pa5.jpg)
A.
Configure and enable FAST Cache
B.
Balance data and log LUNs across both SPs
C.
Configure ALUA on the host
D.
Install and configure PowerPath on the host