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Fiber Optic Raid


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#1 Guest_ptt3_*

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Posted 17 January 2007 - 11:53 AM

I have a Fiber Optic raid which runs on a SAN. For some reason I can't get Linux to detect the Hard Drive I have setup. I'm trying to install Redhat ES4 and the connection is being made from a QLogic QLE-2460. The QLogic detects the hard drive on Lun 0. Any ideas?
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#2 Guest_Jame_*

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Posted 23 January 2007 - 12:47 PM

Redhat does not support this:

Should I boot from SAN?

No. Booting the system should always be done from a local drive; this is the only method covered in Red Hat Support Service Level Agreements.

When a user tries to boot to a non-local drive, the boot order becomes potentially problematic. The availability of network services and runlevel script execution must occur in an exact sequence. If the system needs a resource that is on a drive or partition that hasn't been brought up yet, then the boot will fail. It is very problematic when new LUNs are exported to the host, so a good rule of thumb is to use the local disk for boot and then the data and applications can be placed on the SAN.

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