HP XP Performance Advisor Software - Manual (Page 392)

Table 40 Metrics and descriptions (continued)
Description Metric Metric category
against the previous value
every one minute, and the
lowest port I/O value
collected in the last five
minutes is considered.
The total IO/s (reads and
writes) on that port over a Total IO/s Frontend
given duration. This port in
turn connects to the host
group through which the
I/Os reach the port.
The total IO is obtained by
summing up all the IO of all The total IO of all the LDEVs
created in a specified RAID Total IO Frontend
the LDEVS for the given host
group. group for the given Host
group over the entire data
collection interval.
NOTE: If the same host
group is exposed to more
than one PORT then the IO s
to hostgroups is seen on all
PORTS where it is exposed.
Calculation of Total IO
depends on the LDEVS and
not on PORTS, while
summing up, the same
hostgroup is exposed to
more than one PORT, we
are considering only once.
The total IO writes is obtained
by summing up IO writes of The total IO writes of all the
LDEVs created in a specified Total IO Writes Frontend
all the LDEVS for the given
host group. RAID group for the given
Host group over the entire
data collection interval.
The total IO reads is obtained
by summing up IO reads of The total IO reads of all the
LDEVs created in a specified Total IO Reads Frontend
all the LDEVS for the given
host group. RAID group for the given
Host group over the entire
data collection interval.
The total IO Miss is obtained
by summing up IO miss of all The total IO miss of all the
LDEVs created in a specified Total IO Miss Frontend
the LDEVS for the given host
group. RAID group for the given
Host group over the entire
data collection interval.
Each RAID group value is the
sum of the LDEVs in the RAID
group. The sum total of the frontend
I/Os on all the LDEVs
created in a RAID group. RAID Group Total IO
Frontend
The sum total of the frontend
random I/Os on all the RAID Group Total Random
IO
Frontend
LDEVs created in a RAID
group.
The frontend random read
I/Os on all the LDEVs
created in a RAID group. RAID Group Random Reads
Frontend
Out of the sum total of
frontend random read I/Os RAID Group Random Reads
Cache Hits
Frontend
on all the LDEVs created in
392 Metric Category, metrics, and descriptions