The PD_PLTS record stores performance data indicating the operation status for each tier type of a Dynamic Provisioning pool that has tier management enabled. This is a multi-instance record.
- RAID Agent does not collect information about a Copy-on-Write Snapshot pool, a Thin Image pool, or a Dynamic Provisioning pool that has tier management disabled.
- If the Dynamic Provisioning pool is blocked, RAID Agent does not collect information about the pool. However, if the Dynamic Provisioning pool is blocked because the usage rate of the pool capacity is 100%, RAID Agent collects information about the pool.
- Performance data is stored only when the monitoring information for the storage system is updated. However, if you collect the record immediately after RAID Agent starts, the same data that was collected last might be stored.
- Information about the Dynamic Provisioning pool is not collected if monitoring information has never been collected in the storage system.
- If the storage system aggregates monitoring information while RAID Agent is collecting records, the collection of the records is canceled. In this case, the KAVF18514-W message is output to the common log.
Collection Interval
3600Key Fields
POOL_ID and TIER_TYPELifetime
From when the tier and a Dynamic Provisioning pool that has tier management enabled are set up to when it is removed.Fields
|
Field Name |
Description |
Access Type |
Format |
|---|---|---|---|
|
AVG_IO_RATE |
Frequency of I/O operations (times per second) processed by the tier within the time period defined in the storage system.1 |
1, 2 |
ulong |
|
AVG_IOPS_UTILIZATION_RATE |
Activity rate of the tier (%). Percentage of total I/O that were actually processed by the tier compared to the number of I/O that can be processed by the tier within the time period defined in the storage system.1 |
1, 2 |
float |
|
COLLECTION_TIME |
Time (in GMT) that the data was collected from the storage system. |
1, 2 |
time_t |
|
DISPLAY_DRIVE_TYPE |
Type of tier (display name). |
1, 2 |
string(32) |
|
INPUT_RECORD_TYPE |
Record type identifier, which is always set to PLTS. |
1, 2 |
string(8) |
|
INTERVAL |
Interval (in seconds) at which information is collected. |
1, 2 |
ulong |
|
MONITOR_COLLECTION_END_TIME |
Time that collection of the monitoring information for the storage system ended.2, 3 |
1, 2 |
string(32) |
|
MONITOR_COLLECTION_START_TIME |
Time that collection of the monitoring information for the storage system started.2, 3 |
1, 2 |
string(32) |
|
POOL_ID |
ID of the pool. |
1, 2 |
string(8) |
|
RECORD_TIME |
Time (in GMT) that the record was stored. |
1, 2 |
time_t |
|
TIER_NUMBER |
Tier number. |
1, 2 |
string(8) |
|
TIER_RANGE_IO_RATE |
Minimum I/O rate of the tier (operations per second). Pages that do not attain this minimum rate are subject to relocation to a lower-level tier. For the bottom tier, the value is 0. |
1, 2 |
float |
|
TIER_TYPE |
Tier type.4 |
1, 2 |
string(32) |
|
Notes:
|
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