Re: Page datasets on SAN

Holger.VanKoll_at_SWISSCOM.COM
Date: 06/24/05

  • Next message: Mark Schlechte: "Re: SSA configuration question" 
    Date:         Fri, 24 Jun 2005 16:17:23 +0200
To: aix-l@Princeton.EDU

    you are talking about paging-spaces, dont you?
     
    I´ve never seen a doc from ibm that states ps on san is not recommended and would be surprised if you could provide a link to it.
     
    if "ibm says" means "somebody thats working at ibm told me..." then you can safely ignore it. you can find others at ibm that tell the same, and others at ibm that tell something different.
     
    there are ps-recommendations; in short
    dont place a ps on a disk where a ps already exists
    dont place a ps on a disk where a mirror of a ps already exists
     
    and, by far not so important
    keep all ps at the same size
     
    the only argument against ps on san that I see is cost
    if your san is less reliable than internal disks, also reliability is of concern - if a ps is not accessible anymore, the system will crash
     
     

    ________________________________

    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of Morris, Carey B
    Sent: Friday, June 24, 2005 3:16 PM
    To: aix-l@Princeton.EDU
    Subject: Page datasets on SAN

    Is anyone aware of any good white papers or redbooks regarding placing AIX page datasets on SAN storage? IBM says it is supported but not recommended. What is their reasoning? Performance? Reliability?

    Thanks,
    Carey Morris

  • Next message: Mark Schlechte: "Re: SSA configuration question"

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