HP XP Performance Advisor Software - Manual (Page 389)

Table 40 Metrics and descriptions (continued)
Description Metric Metric category
in the DASD Fast Write
mode, for the ACP pair.
The frontend I/Os for write
requests in the DASD Fast DFW Write Hits
Write mode that result in
cache hits, for the ACP Pair.
The frontend I/Os for
sequential access requests DFW Seq Acc Write Hits
in the DASD Fast Write
mode that result in cache
hits, for the ACP pair.
Each External RAID group
value is the sum of all the The total frontend I/Os
made on an external
volume. Total Sequential Reads MB
- Frontend
LDEVs in all the Ext-RAID
groups in the array.
The chart displays only one
Ext-RAID Group if
The total random frontend
I/Os rate on this external
volume during the entire
collection interval. Total Random IO-Frontend
configuration data is collected
through the inband mode. The
value displayed in the chart
The total random frontend
reads rate on this external Total Random
Read-Frontends
is a sum of all the Ext-RAID
Groups in the array.
volume during the entire
collection interval.
Out of the total random
frontend reads rate on this Total Random Reads Cache
Hit-Frontend
external volume, the number
of random reads available
in the cache.
The total random frontend
writes rate on this external Total Random Write -
Frontend
volume during the entire
collection interval.
The total sequential frontend
I/Os rate on this external Total Sequential IO -
Frontend
volume over an entire
collection interval.
The total sequential frontend
I/Os rate on this external Total Sequential Read -
Frontend
volume for a given range of
time.
The number of sequential
frontend reads serviced from Total Sequential Reads
Cache Hit - Frontend
the cache in terms of the
I/Os rate on this external
volume.
The total sequential frontend
write rate for this external Total Sequential Write -
Frontends
volume over a given time
interval.
It is the ratio of the total
frontend I/Os occurring on Frontend Vs. Backend Hit
Ratio
a ThP pool versus the total
backend tracks associated
with a ThP pool.
Metrics and descriptions 389