VM Physical Disk Status (PI_VPDI)

Organization of this page

Function
Default values and values that can be changed
ODBC key field
Lifetime
Record size
Fields

Function

This record stores performance data on a physical disk being used by a virtual machine over a unit of time. This record is a multi-instance record.

In this record, you can collect performance data such as the data read/write speed of the physical disk being used by the virtual machine. For the data read/write speed, you can collect further details, that is, data write speed and data read speed. The figure below shows an example of data that can be collected in this record.

Figure 5‒11: Example of collected data

Note:

Information cannot be collected if an attempt to connect to the monitored physical server fails.

For Hyper-V, any special character contained in the disk name is converted to a different character and then stored in the Disk ID field. The conversion rules are as follows:

Before conversion	After conversion
`#` and `\`	`_`
`(`	`[`
`)`	`]`

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Default values and values that can be changed

Item	Default value	Can it be changed?
`Collection Interval`	`300`	Yes
`Collection Offset`	`0`	Yes
`Log`	`No`	Yes
`LOGIF`	Blank	Yes
`Over 10 Sec Collection Time`	`No`	No

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ODBC key field

PI_VPDI_VM_ID

PI_VPDI_DISK_ID

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Lifetime

None

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Record size

Fixed portion: 937 bytes
Variable portion: 1,228 bytes

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Fields

PFM - View name (PFM - Manager name)	Explanation	Summary	Grouping	Format	Delta	When not collected	Unsup-ported
Record Type (`INPUT_RECORD_TYPE`)	The record name. This is always `VPDI`.	`COPY`	`COPY`	`char` (8)	No	--	--
Record Time (`RECORD_TIME`)	The time when the record was created.	`COPY`	`COPY`	`time_t`	No	--	--
Interval (`INTERVAL`)	Interval during which the information is collected. [Units: seconds]	`COPY`	`FIXED`	`ulong`	No	--	--
VA DeviceID (`VADEVICEID`)	The device ID of a monitored host.	`COPY`	`COPY`	`string` (256)	No	--	--
VM ID (`VM_ID`)	ID of the virtual machine.	`COPY`	`FIXED`	`string` (65)	No	No	--
Disk ID (`DISK_ID`)	ID of the physical disk (or file) used by the virtual machine.	`COPY`	`FIXED`	`string` (257)	No	No	--
VM Host Name (`VM_HOST_NAME`)	Host name of the virtual machine.	`COPY`	`FIXED`	`string` (257)	No	Blank	Hyper-V KVM logical partitioning feature
VM Name (`VM_NAME`)	Name of the virtual machine.	`COPY`	`FIXED`	`string` (257)	No	Blank	--
Sampling Time (`SAMPLING_TIME`)	Sampling time. The time when the performance information is collected on the host machine. Displayed in the following format: `yyyy-mm-ddThh:mm[`±`hh:mm]`^#1	`COPY`	`FIXED`	`string` (32)	No	Blank	--
Speed (`SPEED`)^#2,#3	Data transfer speed. Speed of reads from or writes to the physical disk, made by the virtual machine. [Units: KBps]	`HILO`	`AVG`	`double`	No	`0`	logical partitioning feature
Read Speed (`READ_SPEED`)^#2,#3	Reading data transfer speed. Speed of reads from the physical disk, made by the virtual machine. [Units: KBps]	`HILO`	`AVG`	`double`	No	`0`	logical partitioning feature
Write Speed (`WRITE_SPEED`)^#2,#3	Writing data transfer speed. Speed of writes to the physical disk, made by the virtual machine. [Units: KBps]	`HILO`	`AVG`	`double`	No	`0`	logical partitioning feature
Requests (`REQUESTS`)^#3	Number of requests. For VMware, KVM, Docker environment Number of times that read/write requests from the virtual machine to the physical disk are processed. For logical partitioning feature Number of interrupts from the HBA	`HILO`	`ADD`	`double`	No	VMware: `0` KVM: `0` logical partitioning feature: `-1` Docker environment: `0`	Hyper-V
Read Requests (`READ_REQUESTS`)^#3	Number of read requests. Number of times that read requests, made by the virtual machine to the physical disk, are processed.	`HILO`	`ADD`	`double`	No	`0`	Hyper-V logical partitioning feature
Write Requests (`WRITE_REQUESTS`)^#3	Number of write requests. Number of times that write requests, made by the virtual machine to the physical disk, are processed.	`HILO`	`ADD`	`double`	No	`0`	Hyper-V logical partitioning feature
Commands (`COMMANDS`)	Number of issued disk commands. Number of commands issued by the virtual machine to the physical disk.	`HILO`	`ADD`	`double`	No	`0`	Hyper-V KVM logical partitioning feature Docker environment
Abort Commands (`ABORT_COMMANDS`)	Number of aborted disk commands. Number of aborted commands made by the virtual machine to the physical disk.	`HILO`	`ADD`	`double`	No	`0`	Hyper-V KVM logical partitioning feature Docker environment
Abort Commands % (`ABORT_COMMANDS_PERCENT`)	Aborted disk command rate. Percentage of all commands, made by the virtual machine to a physical disk, that are aborted.	`HILO`	`AVG`	`double`	No	`0`	Hyper-V KVM logical partitioning feature Docker environment
Bus Resets (`BUS_RESETS`)	Number of bus resets. Number of times the bus was reset for a disk on the virtual machine.	`HILO`	`ADD`	`double`	No	`0`	Hyper-V KVM logical partitioning feature Docker environment

#1: The value used in [±hh:mm] varies depending on the time zone of the monitored host. For example, if the monitored virtual environment is operating according to JST, +09:00 is displayed. If the monitored virtual environment is operating according to UTC, Z is displayed.
#2: For Hyper-V, this field requires performance data to be collected at least twice.
#3: For KVM or Docker environment, this field requires performance data to be collected at least twice.

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