Hi,
I had 5 responses : 2 wanted to know what I find. Here are the other 3.
The DEC engineer will be upgrading the firmware on existing RZ28s to 442D.
My thanks to Mitch Bertone, Patrice LEGOUX & Alan.
1)
>> We run RZ28's & RZ28M on the same raid set without problems, as
>> long as firmware revisions are up to spec.
>>
>> RZ28's need to be rev level 442D or better.
>> RZ28M's need to be rev level 568 or better. (latest is 616)
>>
>> The RZ28M's are built by Seagate instead of Quantum. They are compatible
>> WITH the correct rev levels.
>>
>> mbertone_at_gtech.com
--------------------------------
2)
>> On VMS, we used these disks in mixed-mirrors (one member RZ28-VA and the
>> other RZ28M-VA) without errors. These two disk are geometricaly identicals
>> (Digital source).
>>
>> I don't know about mixed 28/28M raid array.
>>
>> Note : You must have power supplies and fans (in your BAxxx and/or the
>> SWxxx array) for the RZ28M (7200 rpm).
>>
>> E-Mail : Patrice.Legoux_at_gsi.fr #
---------------------------------------
3)
>> What is "RAID software V1.1"? RAID controller subsystems
>> often only support a fixed set of disks at specific rev
>> levels because those are what have been tested and are
>> known to work together. All of the RAID Array 100, 200
>> and 400 family will be in this group, though mixing drive
>> types may be better tolerated in later versions of firmware.
>>
>> Digital UNIX has never had host based RAID-5 software, though
>> LSM (which might have been V1.1 at V3.0) does RAID-1. As
>> long as the disk is supported by the operating system,
>> mixing disks with the same capacity shouldn't be a problem.
>>
>> alan_at_nabeth.com
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My original question was:
> Hi Fellow Managers,
>
> We are running DU 3.0b & RAID software V1.1
>
> One of the disks in the raid 5 array is giving quite a few soft errors. Has
> anyone done this before? i.e., replacing a RZ28-VA with a RZ28M-VA.
>
>
Received on Tue Oct 22 1996 - 11:16:47 NZDT