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August 2004, Week 3

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Subject:
Re: Now That They're Mounted ...
From:
John Lee <[log in to unmask]>
Reply To:
John Lee <[log in to unmask]>
Date:
Thu, 19 Aug 2004 10:01:12 -0500
Content-Type:
text/plain
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text/plain (113 lines) 
Correct me if I'm wrong, but MPE does not provide automatic failover in the
event a controller dies.  Yes, you can connect 2 controllers, but one won't
take over for the other in the event of failure.  That's an important
distinction to recognize.

John Lee
Vaske Computer Solutions


At 03:35 PM 8/18/04 -0400, Gilles Schipper wrote:
>At 03:20 PM 2004-08-18, you wrote:
>>O.K. two brain farts.  Can't have more than 7 logical drives.
>
>
>The mod20 supports up to 8 luns or logical drives.
>
>
>>And you can't split the SCSI, (and use them) on MPE.
>
>Not so. I've done it many times. Using two SCSI cables to 2 SCSI cards on
HP3K.
>
>
>>Best I can do, is use the other port as an alternate
>>configuration in case of SCSI card failure.
>
>
>Nope. You can use both simultaneously.
>
>
>
>>For normal mirrors, that leaves 6 unused drives, I'll
>>have to switch to Raid 1/0 for better drive utilization.
>
>For normal mirrors, you can use 16 drives.
>
>To enable best use of all 20 drives, you need to use one of the 8 luns as
>Raid 1/0.
>
>Cheers,
>
>Gilles
>
>
>>BT
>>
>>
>>Tracy Johnson
>>MSI Schaevitz Sensors
>>
>> > -----Original Message-----
>> > From: HP-3000 Systems Discussion [mailto:[log in to unmask]]On
>> > Behalf Of Gilles Schipper
>> > Sent: Wednesday, August 18, 2004 11:35 AM
>> > To: [log in to unmask]
>> > Subject: Re: [HP3000-L] Now That They're Mounted ...
>> >
>> >
>> > No.
>> >
>> > What seems to be the problem?
>> >
>> > At 11:30 AM 2004-08-18, Johnson, Tracy wrote:
>> > >Is it true that a MOD 20 array has to be on MPE/iX 7.0 or
>> > better to split
>> > >the SCSI between two cables on an HP3000?
>> > >
>> > >BT
>> > >
>> > >
>> > >Tracy Johnson
>> > >MSI Schaevitz Sensors
>> > >
>> > >
>> > >* To join/leave the list, search archives, change list settings, *
>> > >* etc., please visit http://raven.utc.edu/archives/hp3000-l.html *
>> >
>> > --------------------------------------------------------------
>> > -----------------------------------
>> > Gilles Schipper
>> > GSA Inc.
>> > HP System Administration Specialists
>> > 300 John Street, Box 87651   Thornhill, ON Canada L3T 7R4
>> > Voice: 905.889.3000     Fax: 905.889.3001
>> > email:  [log in to unmask]  web: http://www.gsainc.com
>> > --------------------------------------------------------------
>> > -----------------------------------
>> >
>> > * To join/leave the list, search archives, change list settings, *
>> > * etc., please visit http://raven.utc.edu/archives/hp3000-l.html *
>> >
>>
>>* To join/leave the list, search archives, change list settings, *
>>* etc., please visit http://raven.utc.edu/archives/hp3000-l.html *
>
>---------------------------------------------------------------------------
----------------------
>Gilles Schipper
>GSA Inc.
>HP System Administration Specialists
>300 John Street, Box 87651   Thornhill, ON Canada L3T 7R4
>Voice: 905.889.3000     Fax: 905.889.3001
>email:  [log in to unmask]  web: http://www.gsainc.com
>---------------------------------------------------------------------------
----------------------
>
>* To join/leave the list, search archives, change list settings, *
>* etc., please visit http://raven.utc.edu/archives/hp3000-l.html *
>

* To join/leave the list, search archives, change list settings, *
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