Determining the amount of memory installed from the ESXi command line
Article ID: 344111
Updated On:
Products
VMware vSphere ESXi
Issue/Introduction
This article provides a command to determine the amount of memory installed on an ESXi host.
Symptoms:
Symptoms:
Environment
VMware ESXi 4.1.x Installable
VMware ESXi 4.0.x Embedded
VMware vSphere ESXi 5.1
VMware vSphere ESXi 5.5
VMware ESXi 4.0.x Installable
VMware vSphere ESXi 5.0
VMware ESXi 4.1.x Embedded
VMware ESXi 4.0.x Embedded
VMware vSphere ESXi 5.1
VMware vSphere ESXi 5.5
VMware ESXi 4.0.x Installable
VMware vSphere ESXi 5.0
VMware ESXi 4.1.x Embedded
Resolution
To determine the amount of memory installed on an ESXi host, run this command on the host ESXi host through an SSH session:
cim-diagnostic.sh > mem.out
where mem.out is the file in which the command output is stored.
After you have determined the amount of memory installed on the host, run this command to determine how much memory each slot of physical RAM is reporting.
less -i mem.out
To jump to the memory specific output, run this command from within the less session:
/CIM_Mem
The output appears similar to:
Dumping instances of CIM_Memory
Dumping instances of CIM_PhysicalMemory
OMC_PhysicalMemory.CreationClassName="OMC_PhysicalMemory",Tag="32.0"
Tag = 32.0
CreationClassName = OMC_PhysicalMemory
MaxMemorySpeed = (NULL)
IsSpeedInMhz = false
InterleavePosition = 255
PositionInRow = 255
TotalWidth = 32
Speed = (NULL)
SerialNumber = (NULL)
RemovalConditions = (NULL)
PartNumber = (NULL)
OperationalStatus = { 0, }
MemoryType = 2
Manufacturer = (NULL)
HealthState = (NULL)
FormFactor = 8
ElementName = RAM slot #0
Description = RAM slot #0
DataWidth = 32
Caption = RAM slot #0
Capacity = 2147483648
Note: The capacity of the RAM is in bytes.
Note: Alternatively, running the below command returns capacity.
#cim-diagnostic.sh | grep -i capacity
After you have determined the amount of memory installed on the host, run this command to determine how much memory each slot of physical RAM is reporting.
less -i mem.out
To jump to the memory specific output, run this command from within the less session:
/CIM_Mem
The output appears similar to:
Dumping instances of CIM_Memory
Dumping instances of CIM_PhysicalMemory
OMC_PhysicalMemory.CreationClassName="OMC_PhysicalMemory",Tag="32.0"
Tag = 32.0
CreationClassName = OMC_PhysicalMemory
MaxMemorySpeed = (NULL)
IsSpeedInMhz = false
InterleavePosition = 255
PositionInRow = 255
TotalWidth = 32
Speed = (NULL)
SerialNumber = (NULL)
RemovalConditions = (NULL)
PartNumber = (NULL)
OperationalStatus = { 0, }
MemoryType = 2
Manufacturer = (NULL)
HealthState = (NULL)
FormFactor = 8
ElementName = RAM slot #0
Description = RAM slot #0
DataWidth = 32
Caption = RAM slot #0
Capacity = 2147483648
Note: The capacity of the RAM is in bytes.
Note: Alternatively, running the below command returns capacity.
#cim-diagnostic.sh | grep -i capacity
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