The PI_VVTI record stores performance data indicating the execution status of read and write processing for each type of tier for Dynamic Provisioning V-VOLs that have tier management enabled. This is a multi-instance record.
- Information about Copy-on-Write Snapshot V-VOLs, ThinImage V-VOLs, and Dynamic Provisioning V-VOLs that do not have tier management enabled is not collected.
- RAID Agent does not collect information about a Dynamic Provisioning V-VOL that belongs to a blocked Dynamic Provisioning pool except when the pool is blocked because of its usage rate reaching 100%.
- Information about V-VOLs that are not associated with Dynamic Provisioning pools is not collected.
Collection Interval
900Key Fields
LDEV_NUMBER and TIER_TYPELifetime
From the time when a Dynamic Provisioning V-VOL that has tier management enabled is set up until the time when the V-VOL is removed.
Fields
|
Field Name |
Description |
Access Type |
Format |
|---|---|---|---|
|
AVG_IO_RATE |
Average read and write processing rate (number of times per second) for the tier, excluding cache hits Note that this value will not match the performance information for virtual volumes because cache hits are not included. |
1, 2 |
double |
|
INPUT_RECORD_TYPE |
Record type identifier. The value is always VVTI. |
1, 2 |
string(8) |
|
INTERVAL |
Interval (in seconds) at which the information was collected |
1, 2 |
ulong |
|
LDEV_NUMBER |
Logical device number of the V-VOL |
1, 2 |
string(16) |
|
POOL_ID |
ID of the pool |
1, 2 |
string(8) |
|
RECORD_TIME |
Time (in GMT) that the data was collected from the storage system and the record was generated |
1, 2 |
time_t |
|
TIER_NUMBER |
Number of the tier |
1, 2 |
string(8) |
|
TIER_TYPE |
Type of tier* |
1, 2 |
string(32) |
|
* FMC is the value to be stored when the drive type is FMC, FMD DC2, or FMD HDE. SSD Mixed is the value to be stored when different types of flash drives exist. |
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