ASP_NUMBER |
SMALLINT |
Specifies the independent auxiliary storage pool (IASP)
number. |
DISK_TYPE |
VARCHAR(4) |
Disk type number of the disk. |
DISK_MODEL |
VARCHAR(4) |
Model number of the disk. |
UNIT_NUMBER |
SMALLINT |
Unit number of the disk. |
SERIAL_NUMBER![End of change](./deltaend.gif) |
VARCHAR(15)![End of change](./deltaend.gif) |
The serial number of the disk unit.![End of change](./deltaend.gif) |
RESOURCE_NAME![End of change](./deltaend.gif) |
VARCHAR(10)![End of change](./deltaend.gif) |
The unique system-assigned name of the disk unit.![End of change](./deltaend.gif) |
RESOURCE_STATUS |
VARCHAR(7) |
The status of the resource.
- ACTIVE
- RESOURCE_NAME is active.
- PASSIVE
- RESOURCE_NAME is not active.
Contains the null value if the path status is not known.
|
HARDWARE_STATUS![End of change](./deltaend.gif) |
VARCHAR(21)![End of change](./deltaend.gif) |
The hardware status for the disk unit.
- ACTIVE
- The disk unit is operational and ready to accept input or output operations.
- BUSY
- The disk unit is being overwhelmed by a large number of read and write operations and the disk
unit is busy.
- DEGRADED
- The disk unit is part of a disk unit subsystem that has RAID-5 device parity protection. A
decrease in performance has occurred because a component that is not critical has failed.
- FAILED
- The disk unit is part of a disk unit subsystem that has device parity protection. This unit has
failed. If another unit in the disk unit subsystem fails, data could be lost.
- HARDWARE FAILURE
- A hardware-related failure has occurred in a redundant component. The failure does not affect
data or performance. However, the system may become unusable if another failure of a redundant
component occurs.
- NOT READY
- The disk unit is not ready to perform read or write operations.
- PARITY REBUILD
- The disk unit is part of a disk unit subsystem that has device parity protection. The data on
this unit is being rebuilt from other units in the disk unit subsystem. If two more disk units in
the disk unit subsystem fail, data could be lost.
- POWER LOSS
- The disk unit cannot communicate with its I/O adapter.
- READ WRITE PROTECTED
- The disk unit is unable to perform read or write operations.
- UNKNOWN
- The hardware status is not known.
- UNPROTECTED
- The disk unit is part of a disk unit subsystem that has device parity protection. This unit is
operational. However, another unit in the disk unit subsystem has failed. If another unit in the
disk unit subsystem fails, data could be lost.
- WRITE PROTECTED
- The disk unit is unable to perform write operations.
![End of change](./deltaend.gif) |
IS_ZERO![End of change](./deltaend.gif) |
VARCHAR(3)![End of change](./deltaend.gif) |
Indicates whether all the pages on the disk unit are zero.
- NO
- All the pages on the disk unit are not zero.
- YES
- All the pages on the disk unit are zero.
![End of change](./deltaend.gif) |
IOP_NAME![End of change](./deltaend.gif) |
VARCHAR(10)![End of change](./deltaend.gif) |
The name of the I/O processor.![End of change](./deltaend.gif) |
HOST_WWPN![End of change](./deltaend.gif) |
CHAR(16)![End of change](./deltaend.gif) |
A hexadecimal string representing the resource’s host world wide
port name.Contains the null value if no host world wide port name is available for this
device.
![End of change](./deltaend.gif) |
REMOTE_WWPN![End of change](./deltaend.gif) |
CHAR(16)![End of change](./deltaend.gif) |
A hexadecimal string representing the resource’s remote world wide
port name.Contains the null value if no remote world wide port name is available for this
device.
![End of change](./deltaend.gif) |
MULTIPLE_PATH_UNIT![End of change](./deltaend.gif) |
VARCHAR(3)![End of change](./deltaend.gif) |
A disk unit may have multiple resource names. Each resource name
represents a unique connection to the disk unit. All active connections are used to communicate with
the disk unit. This attribute indicates whether the disk unit has more than one connection.
- NO
- The disk unit has only one connection.
- YES
- The disk unit has more than one connection.
![End of change](./deltaend.gif) |
UNIT_TYPE |
SMALLINT |
Indicates the type of disk unit:
- 0
- Not solid state disk
- 1
- Solid state disk (SSD)
|
UNIT_NVME![End of change](./deltaend.gif) |
SMALLINT![End of change](./deltaend.gif) |
Whether this is a Non-Volatile Memory Express (NVMe) unit.
- 0
- Not NVMe
- 1
- NVMe
![End of change](./deltaend.gif) |
UNIT_STORAGE_CAPACITY |
BIGINT |
Unit storage capacity has the same value as the unit media
capacity for configured disk units. This value is 0 for non-configured units. |
UNIT_SPACE_AVAILABLE |
BIGINT |
Space (in bytes) available on the unit for use. |
UNIT_SPACE_AVAILABLE_GB![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
Space, in billions of bytes, available on the unit
for use.![End of change](./deltaend.gif) |
PERCENT_USED |
DECIMAL(7,3) |
The percentage that the disk unit has been consumed. |
UNIT_MEDIA_CAPACITY |
BIGINT |
Storage capacity (in bytes) of the unit. |
UNIT_MEDIA_CAPACITY_GB![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
Storage capacity, in billions of bytes, of the
unit.![End of change](./deltaend.gif) |
STORAGE_FOR_SYSTEM![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The amount of auxiliary storage on the disk unit, in millions of
bytes, reserved for use by the system. ![End of change](./deltaend.gif) |
STORAGE_ALLOCATION_ALLOWED![End of change](./deltaend.gif) |
VARCHAR(3)![End of change](./deltaend.gif) |
An indicator of whether new storage allocations are allowed on the
disk unit.
- NO
- The disk unit does not allow new storage allocations.
- YES
- The disk unit allows new storage allocations.
![End of change](./deltaend.gif) |
PROTECTION_TYPE![End of change](./deltaend.gif) |
VARCHAR(8) ![End of change](./deltaend.gif) |
The type of protection that has been assigned to this disk unit.
- MIRRORED
- The ASP is under system mirrored protection provided by the system software.
- PARITY
- This disk unit is part of a parity protection array.
Contains the null value if no storage protection has been set up for this disk
unit.
![End of change](./deltaend.gif) |
PROTECTION_STATUS![End of change](./deltaend.gif) |
VARCHAR(21)![End of change](./deltaend.gif) |
The disk protection status for the disk unit, when the unit is
under device parity protection or the ASP is under mirrored protection.
- ACTIVE
- The disk unit is active.
- BUSY
- The disk unit is busy.
- DEGRADED
- There is a hardware failure within the disk subsystem that affects performance, but does not
affect the function of the disk unit.
- FAILED
- The disk unit has failed.
- HARDWARE FAILURE
- There is a hardware failure within the disk subsystem that does not affect the function or
performance of the disk unit.
- NOT READY
- The disk unit is not ready.
- PARITY REBUILD
- The disk unit's parity protection is being rebuilt.
- POWER® LOSS
- The disk unit is not operational.
- READ WRITE PROTECTED
- The disk unit is read/write protected.
- RESUME
- The unit is part of a mirrored ASP and mirroring is in the process of being resumed on this
unit.
- RESUME PENDING
- The unit is part of a mirrored independent ASP which is varied off. Mirror synchronization will
resume when the independent ASP is varied on.
- SUSPEND
- The unit is part of a mirrored ASP and mirroring is suspended on this unit.
- UNKNOWN
- The disk unit has returned a status that is not recognizable by the system.
- UNPROTECTED
- Some other disk unit in the disk subsystem has failed.
- WRITE PROTECTED
- The disk unit is write protected.
Contains the null value if PROTECTION_TYPE is null.
![End of change](./deltaend.gif) |
RAID_TYPE![End of change](./deltaend.gif) |
VARCHAR(6)![End of change](./deltaend.gif) |
The type of RAID protection that has been assigned to this disk unit.
- RAID5
- This disk unit has been set up with RAID 5 protection.
- RAID6
- This disk unit has been set up with RAID 6 protection.
- RAID10
- This disk unit has been set up with RAID 10 protection.
Contains the null value if PROTECTION_TYPE is not PARITY or no storage protection has been
set up for this disk unit.
![End of change](./deltaend.gif) |
MIRRORED_SUBUNIT![End of change](./deltaend.gif) |
CHAR(1)Nullable
![End of change](./deltaend.gif) |
Whether the disk unit is for subunit A or B of a mirrored pair.
- A
- This entry is for subunit A.
- B
- This entry is for subunit B.
Contains the null value if the unit is not a mirrored pair or if the information is not
available.
![End of change](./deltaend.gif) |
LOGICAL_MIRRORED_PAIR_
STATUS
|
CHAR(1) |
Indicates the status of a mirrored pair of disks:
- 0
- Indicates that one mirrored unit of a mirrored pair is not active.
- 1
- Indicates that both mirrored units of a mirrored pair are active.
Contains the null value if PROTECTION_TYPE is not MIRRORED or no storage protection has been
set up for this disk unit.
|
MIRRORED_UNIT_STATUS |
CHAR(1) |
Indicates the status of a mirrored unit:
- 1
- Indicates that this mirrored unit of a mirrored pair is active (online with current data).
- 2
- Indicates that this mirrored unit is being synchronized.
- 3
- Indicates that this mirrored unit is suspended.
Contains the null value if PROTECTION_TYPE is not MIRRORED.
|
AVAILABILITY_PARITY_SET_UNIT![End of change](./deltaend.gif) |
VARCHAR(3)![End of change](./deltaend.gif) |
Whether the disk unit is in an availability parity set.
- NO
- The disk unit is not in an availability parity set.
- YES
- The disk unit is in an availability parity set.
![End of change](./deltaend.gif) |
HYPERSWAP |
VARCHAR(3) |
Whether unit is using HyperSwap®.
- NO
- Unit is not using HyperSwap.
- YES
- Unit is using HyperSwap.
|
FIRMWARE_LEVEL![End of change](./deltaend.gif) |
VARCHAR(8)Nullable
![End of change](./deltaend.gif) |
The level of code running in the SSD device.Contains the null
value if this disk is not a mainstream SSD or if the information is not available. See Mainstream solid-state drives for a description of mainstream solid-state
drives.
![End of change](./deltaend.gif) |
SSD_PART_NUMBER![End of change](./deltaend.gif) |
VARCHAR(12)Nullable
![End of change](./deltaend.gif) |
The part number as reported by the SSD device. Contains the null
value if this disk is not a mainstream SSD or if the information is not available.
![End of change](./deltaend.gif) |
SSD_POWER_ON_DAYS![End of change](./deltaend.gif) |
BIGINTNullable
![End of change](./deltaend.gif) |
The number of days that the SSD device has been active in a system.
Contains the null value if this disk is not a mainstream SSD or if the information is not
available.
![End of change](./deltaend.gif) |
SSD_LIFE_REMAINING![End of change](./deltaend.gif) |
INTEGERNullable
![End of change](./deltaend.gif) |
The percentage of the lifetime remaining for the SSD device. This
estimates the percentage of usable function remaining for the drive before it should be replaced.
Calculations for this percentage include more than just the number of bytes written and
supported.Contains the null value if this disk is not a mainstream SSD or if the information is
not available.
![End of change](./deltaend.gif) |
SSD_READ_WRITE_PROTECTED![End of change](./deltaend.gif) |
VARCHAR(3)Nullable
![End of change](./deltaend.gif) |
Whether the device is read/write protected.
- NO
- The SSD device is not read/write protected
- YES
- The SSD device is read/write protected
Contains the null value if this disk is not a mainstream SSD or if the information is not
available.
![End of change](./deltaend.gif) |
SSD_BYTES_WRITTEN![End of change](./deltaend.gif) |
DECIMAL(20,0)Nullable
![End of change](./deltaend.gif) |
The lifetime number of bytes, in gigabytes, that have been
physically written to the NAND memory in this particular SSD disk unit. This is strongly related to
bytes written by the applications using the drive, but will not match. Contains the null value if
this disk is not a mainstream SSD or if the information is not available.
![End of change](./deltaend.gif) |
SSD_SUPPORTED_BYTES_WRITTEN![End of change](./deltaend.gif) |
DECIMAL(20,0)Nullable
![End of change](./deltaend.gif) |
The lifetime number of bytes, in gigabytes, that the SSD is
expected to be able to physically write at a minimum. Additional writes beyond this number may start
to fail due to the limited write endurance of a Read Intensive drive.Contains the null value if
this disk is not a mainstream SSD or if the information is not available.
![End of change](./deltaend.gif) |
SSD_PFA_WARNING![End of change](./deltaend.gif) |
VARCHAR(3)Nullable
![End of change](./deltaend.gif) |
Whether the Predictive Failure Analysis warning has been logged.
- NO
- The Predictive Failure Analysis warning has not been logged.
- YES
- The Predictive Failure Analysis warning has been logged.
Contains the null value if this disk is not a mainstream SSD or if the information is not
available.
![End of change](./deltaend.gif) |
TOTAL_SAMPLE_COUNT![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of times the disk queue was checked to determine whether
or not the queue is empty.![End of change](./deltaend.gif) |
TOTAL_NOT_BUSY_COUNT![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of times the disk queue was empty during the same time
period that the sample count was taken. The busy count can be calculated as TOTAL_SAMPLE_COUNT -
TOTAL_NOT_BUSY_COUNT.![End of change](./deltaend.gif) |
TOTAL_READ_REQUESTS
![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of input data transfer requests processed for the disk
unit since the last IPL. This value is not directly related to the number of blocks transferred for
the disk unit because the number of blocks to be transferred for a given transfer request can vary
greatly. This value will wrap back to 1 when 2,147,483,647 is reached.![End of change](./deltaend.gif) |
TOTAL_WRITE_REQUESTS
![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of output data transfer requests processed for the disk
unit since the last IPL. This value is not directly related to the number of blocks transferred for
the disk unit because the number of blocks to be transferred for a given transfer request can vary
greatly. This value will wrap back to 1 when 2,147,483,647 is reached.![End of change](./deltaend.gif) |
TOTAL_BLOCKS_READ
![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of 512-byte blocks transferred from the disk unit since
the last IPL. This value will wrap back to 1 when 2,147,483,647 is reached.![End of change](./deltaend.gif) |
TOTAL_BLOCKS_WRITTEN
![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of 512-byte blocks transferred to the disk unit since
the last IPL. This value will wrap back to 1 when 2,147,483,647 is reached.![End of change](./deltaend.gif) |
TOTAL_PERMANENT_BLOCKS_WRITTEN
![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of 512-byte blocks of permanent storage transferred to
the disk unit since the last IPL. This value will wrap back to 1 when 2,147,483,647 is
reached.![End of change](./deltaend.gif) |
TOTAL_PERMANENT_WRITE_REQUESTS![End of change](./deltaend.gif) |
BIGINT![End of change](./deltaend.gif) |
The number of output permanent data transfer requests processed for
the disk unit since the last IPL. This value is not directly related to the permanent blocks
transferred from main storage for the disk unit because the number of blocks transferred for a given
transfer request can vary greatly. This value will wrap back to 1 when 2,147,483,647 is
reached.![End of change](./deltaend.gif) |
ELAPSED_TIME![End of change](./deltaend.gif) |
INTEGER![End of change](./deltaend.gif) |
The time that has elapsed, in seconds, between the measurement
start time and the current system time. ![End of change](./deltaend.gif) |
ELAPSED_IO_REQUESTS![End of change](./deltaend.gif) |
DECIMAL(6,1)![End of change](./deltaend.gif) |
The average number of I/O requests for read and write operations
that occurred per second during the elapsed time. ![End of change](./deltaend.gif) |
ELAPSED_REQUEST_SIZE![End of change](./deltaend.gif) |
DECIMAL(6,1)![End of change](./deltaend.gif) |
The average size of an I/O request in KB during the elapsed time.
![End of change](./deltaend.gif) |
ELAPSED_READ_REQUESTS![End of change](./deltaend.gif) |
DECIMAL(6,1)![End of change](./deltaend.gif) |
The average number of requests per second to transfer data from the
disk unit during the elapsed time. ![End of change](./deltaend.gif) |
ELAPSED_WRITE_REQUESTS![End of change](./deltaend.gif) |
DECIMAL(6,1)![End of change](./deltaend.gif) |
The average number of requests per second to transfer data to the
disk unit during the elapsed time. ![End of change](./deltaend.gif) |
ELAPSED_DATA_READ![End of change](./deltaend.gif) |
DECIMAL(6,1)![End of change](./deltaend.gif) |
The average amount of data, in KB, transferred from the disk unit,
per request, during the elapsed time. ![End of change](./deltaend.gif) |
ELAPSED_DATA_WRITTEN![End of change](./deltaend.gif) |
DECIMAL(6,1)![End of change](./deltaend.gif) |
The average amount of data, in KB, transferred to the disk unit,
per request, during the elapsed time. ![End of change](./deltaend.gif) |
ELAPSED_PERCENT_BUSY![End of change](./deltaend.gif) |
DECIMAL(4,1)![End of change](./deltaend.gif) |
The estimated percentage of time the disk unit is being used during
the elapsed time. ![End of change](./deltaend.gif) |