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тАО05-15-2000 06:14 AM
тАО05-15-2000 06:14 AM
Alternate Paths
I want to add a additional alternate H/W path for redundancy.
Has anyone done this or have advice to offer
Thanks
Steve
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тАО05-15-2000 07:21 AM
тАО05-15-2000 07:21 AM
Re: Alternate Paths
You can use vgextend to create an alternate link. syntax is as follows.
#vgextend volume-group-name physical-volume-name
First you must find the alternate path for the physical volume already defined in your volume group via a primary path.
#vgextend /dev/vgxx /dev/dsk/cxtydz
where cxtydz refers to alternate path.
CAUTION: DON'T pvcreate the disk via alternate path, because you have already done via primary path.
NY
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тАО05-15-2000 07:43 AM
тАО05-15-2000 07:43 AM
Re: Alternate Paths
You can do that before ISL prompt.
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тАО05-15-2000 07:55 AM
тАО05-15-2000 07:55 AM
Re: Alternate Paths
I would want the second controller to have the SCSI id = 6
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тАО05-16-2000 11:30 AM
тАО05-16-2000 11:30 AM
Re: Alternate Paths
If you have a dual ported device and all the cables are connected, you can find the alternates using ioscan and then simply use vgextend to add them. They will automatically become alternates. Nothing special to do. Just check the vgextend man page.
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тАО05-16-2000 01:41 PM
тАО05-16-2000 01:41 PM
Re: Alternate Paths
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тАО05-17-2000 12:28 AM
тАО05-17-2000 12:28 AM
Re: Alternate Paths
When we share to scsi cards between two boxes, Hp?s engenier uninstall internal resistors of both cards,and sets diferent SCSI ids to 7 and 6, because it is same bus.
you should install auto terminated cables too.