RE: RAID failure (Was: RE: Cost of tape drives)

If your controller failed, it should simple have been a case of
replacing that and the system would have come back up.  There would have
been no damage to the disks so a pump would have worked too - although
should not have been necessary.
Sounds like you had something much more evil happen.  Did they happen to
replace a power controller at the same time ?
I have seem a case where someone ordered a system with all the hardware
for RAID-5, then no one activated it via DST.   :-(




... Neil Palmer                                     AS/400~~~~~      
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        -----Original Message-----
        From:   DAsmussen [SMTP:DAsmussen@aol.com]
        Sent:   Friday, January 23, 1998 3:22 PM
        To:     MIDRANGE-L@midrange.com
        Subject:        Re: RAID failure (Was: RE: Cost of tape drives)

        Walden,

        In a message dated 98-01-23 09:09:09 EST, you write:

        > RAID didn't work? Please explain. Was it a setup error, and
you were not
        >  really running RAID? Did you loose two drives in the array at
the same
        time?
        >  The CE couldn't pump either? Please provide us with the
details. I have
        many
        >  clients running RAID solutions on the 400 and I would like to
know if there
        >  is a problem.

        Haven't got a clue.  I don't keep up with the hardware anymore,
so I have to
        rely on the people who run it to explain these things.  One
suggestion from a
        disinterested third party was that, as shipped normally, all
RAID disks run
        off of a single disk controller.  If the controller fails _all_
of them are
        toast.  It was further explained that you had to special-order a
RAID
        configuration that ran each set on its own controller.  But,
this is just
        hearsay...

        >  Also, in BRMS, do you provide a list of libraries to backup,
or a list or
        >  libraries _not_ to backup? Just curious.

        I'm not familiar enough with it to know for sure, but I think it
is _not_ to
        back up.  I _do_ know that we have had to apply an awful lot of
PTF's for it
        on all of our systems...

        Regards,

        Dean Asmussen

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