PI_LDE

Ops Center Analyzer REST API Reference Guide
Version
11.0.x
Audience
anonymous
Part Number
MK-99ANA003-18

The PI_LDE record stores performance data indicating the execution status of random and sequential read and write operations on the logical device. This is a multi-instance record.

Note that if you are monitoring a VSP 5000 series storage system and the Access Type is 3 or 4, you cannot collect performance information about mainframe systems.

Sync Collection With

PI_LDS

Key Field

LDEV_NUMBER

Lifetime

From when the logical device is set up to when it is removed.

Fields

Field Name Description Access Type Format
BUSY_RATE1, 2, 3 Usage rate of the logical device (%).10 1, 2, 3, 4 float
INPUT_RECORD_TYPE Record type identifier.12 1, 2, 3, 4 string(8)
INTERVAL Interval (in seconds) at which information is collected. 1, 2, 3, 4 ulong
LDEV_NUMBER Logical device number.4 1, 2, 3, 4 string(16)

MAX_BUSY_RATE1, 2, 3

 Usage rate of the logical device (%).10

This field stores the value of the BUSY_RATE field.

 1, 2

float
RANDOM_READ_IO_RATE Frequency of random read operations.(times per second) 1, 2, 3, 4 float
RANDOM_READ_XFER_RATE5 Transfer rate of random read operations.(megabytes per second) 1, 2, 3, 4 float
RANDOM_WRITE_IO_RATE Frequency of random write operations.(times per second) 1, 2, 3, 4 float
RANDOM_WRITE_XFER_RATE5 Transfer rate of random write operations.(megabytes per second) 1, 2, 3, 4 float
RECORD_TIME Time (in GMT) at which data was collected from the storage system and the record was created. 1, 2, 3, 4 time_t
SEQUENTIAL_READ_IO_RATE Frequency of sequential read operations.(times per second) 1, 2, 3, 4 float
SEQUENTIAL_READ_XFER_RATE5 Transfer rate of sequential read operations.(megabytes per second) 1, 2, 3, 4 float
SEQUENTIAL_WRITE_IO_RATE Frequency of sequential write operations.(times per second) 1, 2, 3, 4 float
SEQUENTIAL_WRITE_XFER_RATE5 Transfer rate of sequential write operations.(megabytes per second) 1, 2, 3, 4 float
VIRTUAL_DKC_DETAIL_NAME This field cannot be used because it is reserved. -- --
VIRTUAL_DKC_NAME6, 7, 8, 11 Product name of the virtual storage machine to which the logical device belongs. 1, 2 string(32)
VIRTUAL_LDEV_NUMBER6, 9 Virtualized logical device number associated with the logical device. 1, 2 string(16)
VIRTUAL_SERIAL_NUMBER6, 7 Serial number of the virtual storage machine associated with the logical device. 1, 2 string(32)

Notes:

  1. If the logical device is an external volume, the field value will always be 0.
  2. The field value is always 0 when the logical device is a Copy-on-Write Snapshot V-VOL or a Thin Image V-VOL.
  3. The field value is always 0 when the logical device is a Dynamic Provisioning V-VOL.
  4. If the logical device is a component of a LUSE, the value of LDEV_NUMBER indicates the logical device number of the first logical device of the LUSE.

    Each performance information field contains statistics on random and sequential read or write operations performed on the entire logical device group that makes up the LUSE. No record is created for individual logical devices that are included in the LUSE. If the LUSE consists of external volume, or logical devices of V-VOLs for Copy-on-Write Snapshot/Thin Image or Dynamic Provisioning, and no LU path is set for the LUSE, the LUSE is not recognized and records are created for individual logical devices.

  5. This field is not supported for logical devices for which the mainframe emulation type is set.
  6. If the logical device does not belong to a virtual storage machine, the field value will be NULL.
  7. If the logical device that composes a copy pair of global-active device is not virtualized, the field value will be NULL.
  8. If the virtual storage machine is VSP F400 or VSP F600, the value is VSP G400 G600. If the virtual storage machine is VSP F800, the value is VSP G800.
  9. If either of the following applies to the logical device, the field value will be NULL:
    • The logical device that is part of a copy pair of a global-active device is not virtualized.
    • A virtualized logical device number is not set.
  10. For storage systems other than those of the following models, if the storage system has a built-in flash drive (FMD, FMC, or SSD), the value displayed as the usage rate of the parity groups of the flash drive might be higher than the actual usage rate, regardless of the load on the flash drive: VSP 5000 series, VSP Gx00, VSP Fx00, VSP G1000, G1500, and VSP F1500.

    For such storage systems, do not use as reference the value displayed as the usage rate of the parity groups of the flash drive.

  11. If the virtual storage machine is VSP G1000, the value stored in the VIRTUAL_DKC_NAME field is VSP G1000 G1500 F1500.

  12. Depending on the logical device number, one of the following values is used: LDE, LDE1, LDE2, or LDE3.