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Auto Raid 12H Model

Roy Fernando
Occasional Contributor

Auto Raid 12H Model

We have Auto raid 12H box with two controllers and six 18.2 disks. What is the best way to create logical volumes to get maximum performance and redundancy.

 

 

P.S. This thread ahs been moved from General to Disk array. - Hp Forum Moderator

3 REPLIES
Patrick Wessel
Honored Contributor

Re: Auto Raid 12H Model

Roy,

The AutoRAID takes (more or less) care for the data redundancy and performance. As long as there is enough space on the array, it saves the data in Raid 0/1. At a special mark does the array move old data to Raid 5 to save space. This happens in the background, the user sees nothing from this copy.
A write operation is always in Raid 0/1. Read can be either Raid 0/1 or Raid 5 because there is no big performance difference.
You can activate a hot spare disk. This is not a physical disk, but space which is reserved on every disk.

The best way to configure your LVs depends on the need of the application.
There is no good troubleshooting with bad data
Andreas Voss
Honored Contributor

Re: Auto Raid 12H Model

Hi,

so you have two controllers and then you get two device files if you create LUN's on your AutoRaid.
If you add the LUN's to a volume group toggle the device files within the vgextend command so that the I/O is not only on one controller.
Example:
(AutoRaid on scsi 1 on both controller X,Y)
LUN 0 : /dev/dsk/c1t1d0 and /dev/dsk/c2t1d0
LUN 1 : /dev/dsk/c1t1d1 and /dev/dsk/c2t1d1
vgcreate vgXX /dev/dsk/c1t1d0 /dev/dsk/c2t1d0
vgextend vgXX /dev/dsk/c2t1d1 /dev/dsk/c1t1d1
So the LUN' have their alternate link on different sides.

Greetings

Andrew

Brian M. Fisher
Honored Contributor

Re: Auto Raid 12H Model

Full AutoRAID documentation can be found at the following URL:http://www.hp.com/essd/model12H_alldocs.html

Brian
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Perception IS Reality