The Symmetrix Directors attributes provide information about the disk directors on an EMC Symmetrix storage facility.
Cache Hit Pct Long Interval: The percentage of prefetched tracks found in cache during a long interval. A long interval is cache hits since IPL or STATUS CLEAR command.
Cache Hit Pct Short Interval: The percentage of prefetched tracks found in cache during a short interval. A short interval can be up to 10 minutes.
Cache Hits Long Interval: The count of cache hits since IPL or STATUS CLEAR command.
Cache Hits Short Interval: The count of cache hits during a short interval. A short interval can be up to 10 minutes.
Cache Misses Long: The number of cache misses during a long interval.
Cache Misses Short: The number of cache misses during a short interval.
Director Index: The ID of this director.
Director Number: Identifies the disk director.
Director Type: The type of director.
I/O Requests Long Interval: The number of I/O requests for a long interval.
I/O Requests Per Second Long Interval: The average number of I/O requests per second during a long interval. A long interval is since IPL or the STATUS CLEAR command.
I/O Requests Per Second Short Interval: The average number of I/O requests per second during a short interval. A short interval can be up to 10 minutes.
I/O Requests Short Interval: The number of I/O requests for a short interval.
I/Os Per Second Long Interval: The average number of I/O operations per second during a long interval. A long interval is since IPL or STATUS CLEAR command.
I/Os Per Second Short Interval: The average number of I/O operations per second during a short interval. A short interval can be up to 10 minutes.
Long Interval: A long measurement interval expressed as hours, minutes, and seconds.
Managed System: The SMS name of this system.
Prefetched Tracks Percent Used: The percentage of prefetched tracks used.
Serial Number Index: The eight low order characters of serial number which serve as the control unit index.
Short Interval: A short measurement interval expressed as hours, minutes, and seconds.
SSID Index: The SSID to which this director is attached.
SSID: The subsystem ID of the Symmetrix control unit controlling this disk director.
Time Stamp: Displays the date and time this data was collected from the virtual tape server (VTS).
Total CCW Chains: The total number of I/O requests handled by the director.
Total I/Os Long Interval: The total I/Os (reads and writes) for a long interval.
Total I/Os Short Interval: The total I/Os (reads and writes) for a short interval.
Total I/Os: The total number of I/Os.
Total Prefetch Cache Hits: The total number of prefetch cache hits.
Total Prefetch Tasks: The number of prefetch tasks.
Total Tracks Prefetched: The total number of prefetched tracks.
Total Write requests: Total write requests.
Unused Prefetch Tracks: The number of unused prefetch tracks.
Used Prefetch Tracks: The number of used prefetch tracks.
Write Pct Long Interval: The percentage of write commands during a long interval. The value is (Write channel commands) / (Reads and writes) A long interval is since IPL or STATUS CLEAR command.
Write Pct Short Interval: The percentage of write commands during a short interval. Write channel commands divided by reads and writes. A short interval can be up to 10 minutes.
Write Requests Long Interval: The count of write requests during a long interval.
Write Requests Short Interval: The count of write requests during a short interval.