Parallel Database Extensions (PDE) Message 13877 - 13877 - Analytics Database - Teradata Vantage

Message

I/O Capacity on Demand and Hard Limits are disabled on one or more invalid storage device(s) according to the Teradata I/O Scheduler (tdsched).

Explanation

The Teradata I/O Scheduler (tdsched) only supports I/O COD and Hard Limits for arrays listed in vconfig that are defined in HwPerfInfo.txt. Only storage devices listed in HwPerfInfo.txt have been profiled for I/O bandwidth; however, not all have been performance tuned for COD (I/O Throttling). Only certain platforms and storage devices have been performance tuned for COD. Each invalid storage device can be identified in /proc/tdmeter/Stats as a row of 1's in the 4th or 5th column.

Generated By

PDE Initialization.

For Whom

System Support Representative.

Notes

This message is informational.

Remedy

None needed if this is expected (e.g. for VMs). Otherwise, contact the Global Support Center.