Performance
Monitor
Operations
5-33
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
•
:
When the green checkmark icon is displayed on the left of an item,
the graph displays workload statistics about the parity group, the external
volume group, or the volume.
•
PG
: Indicates the parity group ID or the external volume group ID. If the
ID starts with the letter "E", the group is an external volume group.
•
LDEV
: Indicates the volume ID. If the ID ends with the symbol "#", the
volume is a an external volume.
•
Emulation
: Indicates the emulation type.
•
Trans
.: Indicates the size (in megabytes) of data transferred to the parity
group, the external volume group, or the volume per second.
•
Read Hit
: Indicates the read hit ratio.
•
Write Hit
: Indicates the write hit ratio.
•
Back Trans.
: Indicates the number of data transfers per second between
the parity group (or the external volume group, or the volume) and the
cache memory.
•
Response Time
: This column indicates the time for replying from the
parity group, the external volume group, or the volume when I/O accesses
are made from the host to them. The unit is milliseconds. The average
response time in the period specified at
Monitoring Term
is displayed.
This column displays a hyphen (-) if the I/O rate is 0 (zero).
•
CLPR:
This column indicates numbers and names of CLPRs corresponding
to each parity group, external volume group, or volume in the format
"
CLPR-number
:
CLPR-name
". For details on CLPRs, see the
Virtual Partition
Manager User's Guide
.