Hitachi Data Systems 2107 Parity Group
The Hitachi Data Systems 2107 Parity Group attributes provide performance information about the parity groups in an HDS storage facility.
Average Read Resp: The average read response time to the parity group over the interval, in milliseconds.
Average Write Resp: The average write response time to the parity group over the interval, in milliseconds.
Avg Bytes/ Read Op: The average number of bytes per read operation.
Avg Bytes/ Write Op: The average number of bytes per write operation.
Bytes Read Per Sec: The rate per second at which bytes were read from the parity group over the interval.
Bytes Written Per Sec: The rate per second at which bytes were written to the parity group over the interval.
Managed System: An internal node name used to identify the system from which this row of data was obtained.
Number of Arrays: The total number of arrays that make up the parity group.
Number of arrays with problems: The number of arrays with error conditions of Raid Degraded (one or more array members need rebuilding), DDM Throttling (a near-line DDM in the array is throttling performance due to temperature or workload), or RPM Exception (a DDM with an slower RPM than the normal array DDMs is a member of the array as a result of a sparing action).
Parity Group: The name of the parity group for HDS storage facilities only.
Rank ID: The identification number of the rank.
Read Ops Per Sec: The rate per second that read operations were issued to the rank over the interval.
SSD Rank: Indicates that the parity group is backed by SSD arrays.
Storage Facility ID: The storage facility identifier for the device (Type-Model-Serial Number).
Time Stamp: The date and time associated with this row of data.
Total Bytes Read: The total number of bytes read from the parity group over the interval.
Total Bytes Written: The total number of bytes written to the parity group over the interval.
Total Read Ops: The total number of read operations issued to the parity group over the interval.
Total Read Resp: The total read response time to the parity group over the interval, in milliseconds.
Total Write Ops: The total number of write operations issued to the parity group over the interval.
Total Write Resp: The total write response time to the parity group over the interval, in milliseconds.
Write Ops Per Sec: The rate per second that write operations were issued to the parity group over the interval.