Hpdsm Set Device Policy - HP MPIO Installation And Reference Manual

hpdsm paths device=1
Path# Controller Port#
1 P8398DXAAQQ013-4
2 P8398DXAAQQ013-3
3 P8398DXAAQQ010-1
4 P8398DXAAQQ010-1
5 P8398DXAAQQ013-3
6 P8398DXAAQQ013-4
7 P8398DXAAQQ010-1
8 P8398DXAAQQ013-4
9 P8398DXAAQQ013-3

hpdsm set device policy

Syntax: hpdsm set device=x policy=policy
Syntax: hpdsm set device=all policy=policy
The hpdsm set device policy command sets the load-balancing policy for device x to one of the
following:
No_Load_Balance (NLB) - All I/O requests are routed through a chosen active path.
•
• Round_Robin (RR) - All I/O requests are distributed across all active paths to the device in a
round robin manner.
• Shortest_Queue_Requests (SQR) - Each I/O request is routed to the active path with the least
number of outstanding requests.
• Shortest_Queue_Bytes (SQB) - Each I/O request is routed to the active path with the least number
of outstanding data bytes.
• Shortest_Queue_ServiceTime (SQST) - Each I/O request is routed to the active path where the
total outstanding time for pending I/O requests is the least.
The example below demonstrates the information displayed by the hpdsm set device policy
command.
NOTE:
You cannot change the load balance policy for the devices using SCSI-2 reservations in an MSCS
environment.
Example:
hpdsm set device=1 policy=rr
Device Name
Device Serial No.
Change Load Balance policy (y/n)?
Load Balance policy changed.
Example:
hpdsm set device=all policy=rr
Successful for all the devices.
State
Active
Active
Active
Active
Active
Active
Active
Active
Active
: HP HSV210
: 600508B400101F6A000070001D950000
Verify by issuing "hpdsm devices" command.
Verify by issuing "hpdsm devices" command.
HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 family of Disk Arrays 3.00.00
RTP
HBA Slot#
4 00020008
4 00020007
4
00010001
4 00010001
4 00020007
4
00020008
3 00010001
3 00020008
3 00020007
y
P.B.T.L
2.0.2.1
2.0.5.1
2.0.6.1
3.0.0.1
3.0.1.1
3.0.2.1
4.0.0.1
4.0.1.1
4.0.2.1
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