Re: SAN booting?

From: Simon Marchese (sjm_news_at_yahoo.co.uk)
Date: 08/05/05

  • Next message: koji_at_svs.com.pg: "Re: ADDING 5/6TH DISK ON P520 AIX 5.3" 
    Date: Fri, 5 Aug 2005 21:30:28 +0000 (UTC)

    Mike wrote:
    >>
    >> SAN booting using virtual engines such as IBM SAN Volume Controller
    >> would not be an easy task, especially if you have ESS, FAStT and
    >> Symmtrix under SVC, because its true mutipathing scheme. You need to
    >> restrict to the only one path for booting time and reenable the
    >> multipath afterward. You may think twice if this would be a possibility
    >> in the future. SAN routing also is coming very soon and that would be
    >> another issue if you want to consolidate all booting resources for
    >> multiple location.
    >>
    >> Also, with advanced virtual I/O server on new pSeries, POWER5 with AIX
    >> 5.3, your zoning would be another challenge for booting because multiple
    >> LPAR hosts can be sharing the same HBAs and I don't know how SAN switch
    >> would take them with same World Wide names. Just a few more thoughts on
    >> planning. Thanks.

    > This message appeared back in Jan 05 on an ADSM list.
    > Does anyone have any thoughts on the subject or data
    > presented below?
    >
    > I want to consolidate my power3 and power4 servers
    > to power5 and to boot those LPARs from a SAN.
    > I'm attaching the last message I saw.

    My recommendation would be to connect the SAN storage for the rootvgs to
      a VIOS in the p5 server. Then present the rootvg to the client LPARs
    as a virtual hdisk. That way the VIOS handles the multipathing. This of
    course requires that the storage that you want to use and the
    multipathing software it uses is supported by VIOS.

  • Next message: koji_at_svs.com.pg: "Re: ADDING 5/6TH DISK ON P520 AIX 5.3"

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