Administrator Guide

Supported Threshold Definitions Threshold Alert Recommendation
Type Alert Object
Type
Alert
Definition
IO Usage Volume Latency When latency for a volume exceeds the configured error threshold, the alert
recommends moving the volume to a specific Storage Center, and gives you
the option to act on the recommendation by creating a Live Volume.
IO Usage Controller CPU Usage When CPU usage for a Storage Center controller exceeds the configured alert
threshold, the alert recommends moving volumes to a specific Storage Center.
Storage Storage Center Percent
Used
When the used space percentage for a Storage Center exceeds the
configured alert threshold, the alert recommends moving the volume to a
specific Storage Center.
General Volume Advisor Requirements
Storage Centers must meet the following requirements to be considered for volume movement recommendations.
Requirement Description
Management The Storage Center must be added to Storage Manager.
NOTE: Storage Centers that are not mapped to your user account are not presented as
recommendations, but might be presented as recommendations to other users.
Licensing (Storage Center 7.0 and below) The Storage Center must be licensed for Live Volume.
Storage Center version The Storage Center must be running the same version (x.y) as the original Storage Center.
Tier 1 disk type The Storage Center must have the same Tier 1 disk type as the original Storage Center, such
as a 7.2K, 10K, 15K, or Solid State Disk (SSD).
Additional Requirements for the Volume Latency Threshold
Definition
The original volume and candidate Storage Centers must meet the following additional requirements to be considered for volume
movement recommendations triggered by the volume latency threshold definition.
Requirement
Description
Original volume configuration
● The volume cannot be part of a replication, Live Volume, or Live Migrate.
● The volume cannot be associated with a consistent Snapshot Profile.
Candidate Storage Center
configuration
● The Storage Center must have a server object that matches the server to which the
original volume is mapped.
● The Storage Center must be less than 80% full when including the size of the volume to be
moved.
● The combined original volume IO/sec and Storage Center front end IO/sec must be below
a predefined threshold.
Types of Volume Movement Recommendations
There are two types of recommendations: those that are triggered by volume latency threshold definitions, and those that are
not. Both recommend moving one or more volumes to a different Storage Center, but volume latency recommendations provide
more detail and include an option to automatically act on the recommendation.
Both types of recommendations can be viewed from the current threshold alerts that contain them. On the Alerts tab of the
Threshold Alerts view, current threshold alerts that contain recommendations display Yes in the Recommend column.
To view the recommendation contained by a current threshold alert, right-click the alert and select Recommend Storage
Center to open the Recommend Storage Center dialog box.
Threshold Alerts
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