Capacity at Risk Reports > LUNs at Risk
  
Version 9.2.00
LUNs at Risk
Pro-actively increase LUN capacity and avoid outages or performance issues associated with insufficient capacity.
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When you generate this report, select a capacity threshold: Low, Warning, or Critical. Typically, for at risk reports, you will want to view the Critical LUNs—that is, those that are at risk of breaching the critical threshold and running out of space.
Note: When reviewing the values in this report, note that LUNs at risk are determined by evaluating current and projected usage.
 
Name
The specific logical unit number that is at risk of running out of room. Click on this link to access details in the LUN Details report.
Risk Date (Projected)
The date that the LUN is projected to exceed its threshold and will no longer be considered over-provisioned.
Usage (Projected)
Usage based on the period that you’ve selected.
High-Water Mark (Projected)
The projected high-water mark represents the maximum usage, based on historical data. Note that this size may represent temporary usage.
Array
The group to which this LUN belongs.
Mount Point
The host’s filesystem mount point for this LUN.
Raw Filesystem
The explicit full directory path for the filesystem.
Host Storage Domain
The name of the host storage domain, a logical group of LUNs that can be accessed by multiple hosts through the same physical storage port, with each host accessing its unique LUN. For security purposes, LUN masking is also coupled with this capability. Host storage domain is Hitachi’s name for its multi‑hosted storage capability.
iGroup
The iGroup associated with the LUN.
Volume Group
The logical collection or volume group to which the volume belongs.
Current Usage
The amount of storage already committed.
Host Name
Click on a host name to launch the Host Utilization Detail.
Capacity
The total capacity (used and unused) of the LUN.
Threshold
A LUN is determined to be at risk when this tolerance threshold is crossed. The default thresholds are set at: Low = 30%; Warning = 70%; Critical = 90%. To modify thresholds for a particular LUN, go to ADMIN > Reports > Threshold Policies.