HP XP Performance Advisor Software - Manual (Page 180)

Description Performance View screen elements
DKA_2, and ThP_Pool_2 is served
by only DKA_1. If the combined
backend transfers on ThP_Pool_1 is
50 I/Os, and ThP_Pool_2 is 30
I/Os, the combined backend
transfers of DKA_1 is 80 I/Os (sum
of the backend transfers on
ThP_Pool_1 and ThP_Pool_2), and
DKA_2 is 50 I/Os (sum of the
backend transfers on ThP_Pool_1).
Displays the average utilization of an
MP blade, which is calculated as the
utilization of all the individual
processors in the MP blade. The MP
blades are grouped based on the
clusters to which they belong. For more
information, see
“Viewing MP blade
MP Blades Util % group box
utilization for P9500/XP7 disk arrays”
(page 193)
.
NOTE: The
MP blade component is
not
applicable for the XP disk arrays.
So,
the MP blade and the individual
processor
utilization data is displayed
only
for the XP7 disk arrays.
Displays
the total response time of the
XP
or XP7 disk array, which is
calculated
as the total response time of
all
the LDEVs in the disk array.
Total Response Time group box
IMPORTANT: Combined backend transfer:
In Thin Provisioned environments, the overall backend transfers at the RAID group and ACP/DKA
levels are reported using combined backend transfer metric. For a ThP V-Vol where the ThP pool
is associated with multiple RAID groups, the backend transfers are not tracked to the corresponding
RAID group level. The backend transfers contributed by all the V-Vols in a ThP pool are combined
and reported as combined backend transfers for each participating RAID group. It implies that the
combined backend transfer is shared among each of the participating RAID groups.
The same method is applied to an ACP/DKA. When a ThP pool consists of pool volumes from
multiple ACPs/DKAs, the backend transfers contributed by all the V-Vols in a ThP pool are reported
as combined backend transfer for each of the participating ACP/DKA.
Click any metric value in the group boxes described in the above table to view the respective
performance or utilization graphs in the Chart Work Area. For example, click the cache usage,
writes pending, or the sidefile usage in the Cache group box to view their usage graphs in the
Chart Work Area.
The
maximum cache memory is 2TB for the P9500 and XP7 Disk Arrays and the XP24000 and
XP12000
Disk Arrays, 128 GB for the XP20000 Disk Array, 32 GB for the XP128 and the
XP10000
Disk Arrays, and 64 GB for the XP1024 Disk Array.
An XP10000 type array appliance has a MIX PCB configuration. The two configurations, MIX-A
and MIX-F, have four CHIP MPs and four ACP MPs on the same processor board. There can be
two MIX PCB configurations for the array. The MIX PCB displays four MPs in the CHIP section that
serve as CHIPs and four MPs in the ACP section, which serve the ACP functionality. It can also
have two additional optional CHIPs, B and E. These optional CHIPs can have only CHIP MPs.
180 Viewing XP and XP7 disk array components