eG Monitoring
 

Measures reported by XIOSSDsTest

This test reports the current health and enabled state of each SSD in an EMC XtremIO, monitors the space utilization of each SSD, and enables administrators to accurately identify which SSD is experiencing space crunch currently. In addition, this test monitors the level of traffic on each SSD, and helps isolate irregularities in load balancing across the SSDs. In the process, the test also helps identify which SSD is experiencing processing bottlenecks (if any).

Outputs of the test : One set of results for each Data Protection Group:SSD in the target EMC XtremIO Storage array that is being monitored

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
ssdHealthState Indicates the current health of this SSD.   The values reported by this measure and their numeric equivalents are available in the table below:

Measure Value Numeric Value
Healthy 0
Unknown 1

Note:

This measure reports the Measure Values listed in the table above to indicate the current health of this SSD. However, in the graph, this measure is indicated using the Numeric Values listed in the above table.
ssdEnabledState Indicates whether/not this SSD is enabled.   The values reported by this measure and their numeric equivalents are available in the table below:

Measure Value Numeric Value
Enabled 0
Diabled 1
Unknown 2

Note:

This measure reports the Measure Values listed in the table above to indicate whether/not this SSD is enabled. However, in the graph, this measure is indicated using the Numeric Values listed in the above table.
ssdRGState Indicates whether/not this SSD is within a Raid Group.   The values reported by this measure and their numeric equivalents are available in the table below:

Measure Value Numeric Value
In RG 0
Unknown 1

Note:

This measure reports the Measure Values listed in the table above to indicate whether/not this SSD is within a Raid Group. However, in the graph, this measure is indicated using the Numeric Values listed in the above table.
ssdSize Indicates the total size of this SSD. GB  
ssdSpaceInUse Indicates the amount of space that is currently utilized by this SSD. GB If the value of this measure is close to that of the ssdSize measure, it indicates potential space crunch in this SSD. Administrators are therefore required to increase the size of the SSD.
ssdFreePCT Indicates the percentage of space that is available for use in this SSD. Percent A high value is desired for this measure.
ssdUsedPCT Indicates the percentage of space that is currently in use in this SSD. Percent A low value is desired for this measure. A consistent increase in this value could indicate a gradual, but steady erosion of space in this SSD. A value close to 100% indicates that this SSD is rapidly running out of space.
enduranceRemainPCT Indicates the tolerance i.e., withstanding capability of this SSD, expressed in terms of percentage. Percent A high value is desired for this measure. A sudden/gradual decrease in the value indicates an impending SSD failure.
bandwidth Indicates the amount of data handled while performing I/O operations per second on this SSD. MB/Sec  
readBandwidth Indicates the rate at which data is read from this SSD. MB/Sec Comparing the value of these measures across the SSDs will clearly indicate which SSD is the slowest in I/O processing, and when exactly the slowdown occurred - when reading data? or when writing data?
writeBandwidth Indicates the rate at which data is written to this SSD. MB/Sec
iops Indicates the rate at which I/O operations were performed on this SSD. IOPS A high value is desired for this measure. Compare the value of this measure across the SSDs to identify the SSD that is handling the maximum number of I/O operations.
readIOPS Indicates the rate at which read operations were performed on this SSD. IOPS Ideally, the value of this measure should be high. A steady dip in this measure value could indicate a potential reading bottleneck.
writeIOPS Indicates the rate at which write operations were performed on this SSD. IOPS Ideally, the value of this measure should be high. A steady dip in this measure value could indicate a potential writing bottleneck.