HP MPIO, Инструкция по установке и справочник, Страница: 29 / 53

hpdsm paths device=1
Path# Controller Port# State HBA Slot# RTP P.B.T.L
1 P8398DXAAQQ013-4 Active 4 00020008 2.0.2.1
2 P8398DXAAQQ013-3 Active 4 00020007 2.0.5.1
3 P8398DXAAQQ010-1 Active 4 00010001 2.0.6.1
4 P8398DXAAQQ010-1 Active 4 00010001 3.0.0.1
5 P8398DXAAQQ013-3 Active 4 00020007 3.0.1.1
6 P8398DXAAQQ013-4 Active 4 00020008 3.0.2.1
7 P8398DXAAQQ010-1 Active 3 00010001 4.0.0.1
8 P8398DXAAQQ013-4 Active 3 00020008 4.0.1.1
9 P8398DXAAQQ013-3 Active 3 00020007 4.0.2.1
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 : HP HSV210
Device Serial No. : 600508B400101F6A000070001D950000
Change Load Balance policy (y/n)? y
Load Balance policy changed. Verify by issuing “hpdsm devices” command.
Example:
hpdsm set device=all policy=rr
Successful for all the devices. Verify by issuing “hpdsm devices” command.
HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 family of Disk Arrays 3.00.00
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