Re: SSA Loop Verification Question (graphics)

From: Green, Simon (Simon.Green_at_EU.ALTRIA.COM)
Date: 04/25/03

  • Next message: Bill Verzal: "Re: SSA Loop Verification Question (graphics)" 
    Date:         Fri, 25 Apr 2003 17:17:45 +0200
To: aix-l@Princeton.EDU

    Another thought: I would advise against having VGs vary on automatically at
    startup, because you can't guarantee that all disks will be available at
    that time. Consider the case where you're doing power maintenance, and all
    machines are shut down. The sequence in which the machines are started and
    their specific hardware configurations will determine at what point the
    loops are intact. Any maintenance where you have two or more nodes down at
    once could produce problems.

    Simon Green
    Altria ITSC Europe s.a.r.l.

    AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2
    AIX FAQ at http://www.faqs.org/faqs/aix-faq/

    N.B. Unsolicited email from vendors will not be appreciated.

    > -----Original Message-----
    > From: Bill Verzal
    > Sent: 25 April 2003 15:57
    > To: aix-l@Princeton.EDU
    > Subject: Re: SSA Loop Verification Question (graphics)
    >
    >
    > Thanks for your thoughts.
    >
    > Indeed, all 5 nodes would need access to all disks at one
    > time or another,
    > so it needs to stay in that mode. In terms of outages, this is just a
    > backup pool, so if there are hosts down, it is of no concern,
    > unless if
    > course backups are running. We've never had an instance
    > where there were 2
    > nodes down, but it could happen of course.

  • Next message: Bill Verzal: "Re: SSA Loop Verification Question (graphics)"

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