Metric
category
Metric Description
ACP Sequential Writes
– Frontend
The frontend I/Os for the sequential
write requests for all the RAID
Groups managed by the ACP pair.
Total Sequential Reads
MB - Frontend
The total frontend I/Os made on an
external volume.
Each External RAID
Group value is the sum
of all the LDEVs in all
the Ext-RAID Groups in
the array.
Total Random IO-
Frontend
The total random frontend I/Os rate
on this external volume during the
entire collection interval.
Total Random Read-
Frontends
The total random frontend reads
rate on this external volume during
the entire collection interval.
Total Random Reads
Cache Hit-Frontend
Out of the total random frontend
reads rate on this external volume,
the number of random reads
available in the cache.
Total Random Write -
Frontend
The total random frontend writes
rate on this external volume during
the entire collection interval.
Total Sequential IO -
Frontend
The total sequential frontend I/Os
rate on this external volume over
an entire collection interval.
Total Sequential Read
- Frontend
The total sequential frontend I/Os
rate on this external volume for a
given range of time.
Total Sequential Reads
Cache Hit - Frontend
The number of sequential frontend
reads serviced from the cache in
terms of the I/Os rate on this
external volume.
Total Sequential Write -
Frontends
The total sequential frontend write
rate for this external volume over a
given time interval.
Frontend Vs. Backend
Hit Ratio
It is the ratio of the total frontend
I/Os occurring on a ThP pool
versus the total backend tracks
associated with a ThP pool.
Table Continued
330 Metric Category, metrics, and descriptions