8. vCloud Management and Monitoring Examples : 8.1 vCenter Operations Manager : 8.1.5 vCenter Operations Manager Dashboards : 8.1.5.6. Storage Dashboard
   
8.1.5.6. Storage Dashboard
The Storage Dashboard widget can help with troubleshooting at the cluster or host level and can be used by the virtual infrastructure admins and the storage administrators. Figure 58 shows this dashboard which is made using four widgets:
*Disk Scoreboard (Figure 59).
*Disk Capacity Scoreboard (Figure 60).
*Cluster Storage Metric Graph (Figure 61).
*Health Status (Figure 53).
This dashboard focuses on cluster statistics and datastore hot spots. Hot spots in this example are related to latency to the datastore as detected by the ESXi host. Heat maps can also be used to identify datastores with low capacity remaining, which is done using a super metric.
Figure 58. Storage Dashboard
 
This dashboard uses two Scoreboard widgets. The first widget displays statistics related to the cluster I/O usage. The second widget displays information about virtual memory snapshot space and virtual disk usage.
Table 19. Cluster Storage Usage Widget Settings
Metric
Unit
Green Range
Yellow Range
Orange Range
Red Range
Disk CMD Per Sec
#
200
200–300
300–400
400
Disk CMD Latency
ms
20
20–30
30–40
40
Disk Read Latency
ms
20
20–30
30–40
40
Disk Write Latency
ms
20
20–30
30–40
40
Disk Usage
KBps
10000
1000–2000
2000–3000
3000
Disk Workload
%
50
50–60
60–70
70
 
Note: These threshold/ranges are only examples. These values should be based on the cluster design threshold values and the customer requirements.
Figure 59. Cluster Disk Scoreboard Widget
 
The second generic scoreboard widget displays virtual machine disk space information. This example shows how much snapshot space is used and the total amount of virtual disk space used.
Table 20. Cluster Disk Capacity Scoreboard Settings
Metric
Unit
Green Range
Yellow Range
Orange Range
Red Range
Virtual Machine Snapshot Space
GB
1
1–10
10–20
20
Virtual Disk Usage
GB
90
90–200
200–500
500
 
Note: These threshold/ranges are only examples. These values should be based on the cluster design threshold values and the customer requirements.
Figure 60. Cluster Disk Capacity Scoreboard Widget
 
The Metric Graph widget displays historical disk statistics that include the DT values. The DT values are also displayed for the next number of hours, depending on the Date Control selection). In Figure xxx, we have enabled the Anomalies view also (all the yellow spikes). For the example we are displaying historical stats for the following metrics:
Metric
Unit
Disk
Commands per second
Disk
Disk commands latency (ms)
Disk
Usage rate (KBps)
Disk
Disk write latency (ms)
Disk
I/O usage capacity
 
Figure 61. Cluster Storage Metric Graph Widget