HP XP Performance Advisor Software - Manual (Page 220)

Table 23 Components and metrics in LDEV Column Settings list (continued)
Description Screen elements
The backend transfer sequential reads for the LDEV. Backend Transfer Sequential Reads
The backend transfer non-sequential reads for the LDEV. Backend Transfer Non-Sequential Reads
The backend transfer writes for the LDEV. Backend Transfer Writes
An array group is divided into open volumes of equal size.
These volumes are referred to as emulation types. If HP Emulation
XP7 Performance Advisor cannot determine the emulation
type, an error appears. The error does not affect
performance data collection.
NOTE: The emulation type is displayed as "Not Known"
for emulations that start with "OPEN-XP".
The external LUN LDEV ID on the external array. E-LDEV
Indicates that the LDEV is an Ext-Lun. The following options
are available:- (hyphen) = Normal LUN E = Ext-Lun P = Ext-Lun
Ext-Lun provider (this LDEV is used as an Ext-Lun for another
array)
A list of Ext-Lun initiator ports (ports used to connect to an
external array). E-Port(s)
The Ext-Lun provider's serial number for the array. E-Seq
The name of the host machine. HP XP7 Performance
Advisor discovers LDEV-to-CHIP port connectivity. Unknown Host ID (Host identifier)
is displayed if the host name is unknown. This automatic
CHIP-LDEV mapping works only for open volumes.
The port host group. Host Group
Displays the average IO size in KBs for the selected LDEV.
The average IO size is derived by dividing the total MB/s IO Size
with the total I/Os for that LDEV (IO size = LDEV MB
Total/LDEV IO Total
).
The continuous access journal pool IDs. Jnl Group
The identification number for the LDEV. LDEV ID
The total frontend I/Os for all random reads, random
writes, sequential reads, and sequential writes during the
reporting period. LDEV IO/s
The total frontend throughput in MB/s for the LDEV. LDEV MB/s
Count in Cache Load Inhibit Mode. Load Inhibit Count
Indicates that the LDEV is a LUN Size Expansion (Luse).E
= Master C = Component Luse
The LDEV number of the LUSE, when applicable. Luse Status
• blank = The LDEV is not a Luse component
•
M = Master for the Luse group
•
C = Contributor to the Luse group
The Luse master LDEV also lists an entry for the contributor.
If you are filtering by Host, you cannot see the contributors,
because they are not mapped externally. If you show
Requested Hosts connected to the array, you can see the
contributors in addition to the Luse master.
220 Viewing XP and XP7 disk array components