[Info-vax] DR's fate

[Stephen Hoffman]

On 2012-08-31 20:02:49 +0000,   VAXman-  @SendSpamHere.ORG said:

> In article <iOqdnXZVIYTwkdzNnZ2dnUVZ_gKdnZ2d at giganews.com>, "Richard B. 
> Gilbert" <rgilbert88 at comcast.net> writes:
>> On 8/31/2012 6:35 AM, VAX man- @Misapprehend.ORG wrote:
> --------------------------------^^^^^^^^^^^^^^
> Huh?
> 
>>> In article <504029d9$0$13040$c3e8da3$40d4fd75 at news.astraweb.com>, JF 
>>> Mezei <jfmezei.spamnot at vaxination.ca> writes:
>>>> Richard B. Gilbert wrote:
>>>> 
>>>>> Your words do not serve to enlighten me.  Is there context somewhere
>>>>> that I'm missing?
>>>> 
>>>> 
>>>> DR could be Digital Review. dead for many many years.
>>>> or it could mean Death Row cluster. The later definitin is more likely
>>>> considering the timing and context.
>>> 
>>> 'Tis Deathrow.  The Alpha there has had some disk failure.  The system
>>> drive is still functional but it appears that most accounts were on the
>>> drive which failed.  I knew soething was up when I was prompted for my
>>> password when I ssh'ed to it.  My account and hostkey are on the drive
>>> which has failed.
>>> 
>> 
>> Perhaps these drives should be mirrored to increase reliability!
> 
> Can't mirror IDEs.

Technically, you can use OpenVMS host-based volume shadowing (HBVS) 
with IDE/ATA disks.  But the support is arguably barely useful.  
IDE/ATA disks are ejected from the shadowset on any read or write 
errors.  The sector recovery processing common with SCSI and SAS disk 
devices is not attempted on IDE/ATA disks, and this greatly limits the 
value of HBVS with these disks.  Simply adding the IDE/ATA disks back 
into the HBVS shadowset becomes a hassle.

> 
> 
>> A spelling checker might help!  It would certainly point out that
>> "soething" was in error!
>> 
>> You could use the Vassar spelling checker.  The students at Vassar may
>> have corrected some of the spelling errors in their dictionary.  Then
>> again, they may not have done so.  I last saw it 10-12 years ago.
>> 
>> Fat fingered or fat minded, the end result is the same!
> 
> ???
> 
> So, I missed an 'M' while quickly typing.
> 
> Why didn't you "correct" JF?

Or his own posting.  Adding disks can increase the availability of the 
configuration, but it inherently decreases the reliability of the 
configuration.




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