HP XP7 Storage - Manual (Page 139)

# raidcom get hba_wwn -port CL4-E-0
PORT GID GROUP_NAME HWWN Serial# NICK_NAME
CL4-E 0 Linux_x86 210000e08b0256f8 63528 ORA_NODE0_CTL_0
CL4-E 0 Linux_x86 210000e08b039c15 63528 ORA_NODE1_CTL_1
Setting the priority on host bus adapter
Set the high-priority host bus adapter for the prioritized WWN, and set the low-priority host bus
adapter for the non-prioritized WWN. You need to set the upper limit and the threshold with the
priority.
The upper limit is set for the non-prioritized WWN. In the low-priority server, the frequency of the
access to the storage system or the data traffic is restricted with the upper limit. The threshold is
set for the prioritized WWN. Only one threshold can be set for the entire storage system. The
threshold cannot be set for each prioritized WWN. When the traffic of the high-priority server
declines to the threshold, the control with the upper limit becomes invalid automatically.
By adjusting the upper limit or the threshold to the appropriate value, the frequency of the access
to the storage system or the data traffic becomes stabilized in a high level in the high-priority server.
The following shows examples of the priority settings.
Set the host bus adapter (WWN: 210000e0,8b0256f8) to the non-prioritized WWN, and set
5000 [IOPS] as the upper limit.
# raidcom modify pfc_wwn -port CL4-E -pfc_priority
n -limit_io 5000 -hba_wwn 210000e0,8b0256f8
Set the host bus adapter (WWN: 210000e0,8b039c15) to the prioritized WWN, and set 3000
[IOPS] as the threshold.
# raidcom modify pfc_wwn -port CL4-E -pfc_priority
y –limit_io 3000 -hba_wwn 210000e0,8b039c15
-limit_io 3000 shown in the example of the priority setting is the threshold value of the entire system.
Checking the status of the prioritized WWN and the non-prioritized WWN settings
Display the status of the prioritized WWN and the non-prioritized WWN settings and check it.
Display examples of the status of the prioritized WWN and the non-prioritized WWN settings.
Display the status of settings of the prioritized WWN and the non-prioritized WWN assigned
under the specified port (CL4-E).
# raidcom get pfc_wwn -port CL4-E
PORT PFC_MD PFC_WWN NICK_NAME GRP_NAME Serial#
CL4-E WWN 210000e08b0256f8 - - 63528
CL4-E WWN 210000e08b039c15 - - 63528
Display the status of setting to specify the WWN (210000e08b0256f8).
# raidcom get pfc_wwn -port CL4-E -hba_wwn 210000e0,8b0256f8
PORT PFC_MD PRI IOps KBps Serial#
CL4-E WWN N 5000 - 63528
Displays the status of setting to specify the WWN (210000e08b039c15).
# raidcom get pfc_wwn -port CL4-E -hba_wwn 210000e0,8b039c15
PORT PFC_MD FRI IOps KBps Serial#
CL4-E WWN Y 3000 - 63528
The threshold value displayed for the prioritized WWN by using the get pfc_wwn command is set
for the entire system.
Setting PFC name for host bus adapter
The host bus adapters can be identified by checking the WWNs, but using PFC names may make
it easier to identify the host bus adapters. Display examples of setting the PFC name of the host
bus adapter:
Set the PFC name (ORA_NODE0_CTL_0) for the WWN (210000e08b0256f8).
Performance Control operations 139