Re: El Capitan oddities

Subject	Re: El Capitan oddities
Newsgroups	comp.sys.mac.system
References	(8 earlier) <mv77ed$ivs$1@dont-email.me> <MYmdna1gtrmhXorLnZ2dnUU7-f-dnZ2d@giganews.com> <mv8qe5$vfn$1@dont-email.me> <4eydnb65Up8_ZYrLnZ2dnUU7-RmdnZ2d@giganews.com> <mv9ur4$o7q$1@dont-email.me>
From	Alan Browne <alan.browne@freelunchvideotron.ca>
Date	2015-10-10 09:48 -0400
Message-ID	<GvidncIS05aCioTLnZ2dnUU7-RmdnZ2d@giganews.com> (permalink)

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On 2015-10-09 22:59, John Somerset wrote:
> On 10/9/15 1:25 PM, Alan Browne wrote:

>> You can also get a UPS to keep your disks up during writes - further,
>> they have power failure management s/w to terminate tasks on the mac
>> during power failures that last more than x minutes.  (Although I don't
>> know how gracefully TM exits if writing at that time.  OTOH, once a TM
>> volume is initialized, hourly updates take little time).
>>
> A few months ago, the household lights blinked, but my Mini and
> LED-backlight monitor kept going.  I was impressed. If my Mini had been
> powering a USB drive, maybe it wouldn't have kept running.  I guess
> corrupting a backup disk would probably be an inconvenience, not a
> disaster.

>>> Is the recovery key normally a password created by the user?
>>
>> No.  It's gen'd by FileVault.  24 chars (similar to a s/w license key).
>>
>> Note that you would normally keep the Filevault key in your keychain
>> which requires password access.  eg: when you log in to your mac, the HD
>> Filevault key is retrieved via keychain.
>>
>>
> I've found a page on Filevault.
> http://osxdaily.com/2013/05/22/filevault-disk-encryption-mac/
>
> I was worried about what a power interruption could do.  It says I'd
> have to restart the computer. If the disk needed repair, I wonder if
> that would be a problem with Filevault.

Millions of people use FileVault.  It's not something you hear many 
issues about.

>
> It says with a 5400 rpm drive, I might see slower performance. I guess
> I'd have to try it to find out.

The slowdown would only appear on very large/long writes.  It's very 
much worth whatever slowdown occurs.

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Re: El Capitan oddities xxx <xxx@yyy.zzz> - 2015-10-08 01:54 -0400
  Re: El Capitan oddities John Somerset <somerset@nospam.com> - 2015-10-08 16:29 -0400
    Re: El Capitan oddities dempson@actrix.gen.nz (David Empson) - 2015-10-09 14:09 +1300
      Re: El Capitan oddities John Somerset <somerset@nospam.com> - 2015-10-08 22:08 -0400
        Re: El Capitan oddities Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-09 09:38 -0400
          Re: El Capitan oddities John Somerset <somerset@nospam.com> - 2015-10-09 12:38 -0400
            Re: El Capitan oddities Jolly Roger <jollyroger@pobox.com> - 2015-10-09 17:08 +0000
            Re: El Capitan oddities Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-09 13:25 -0400
              Re: El Capitan oddities John Somerset <somerset@nospam.com> - 2015-10-09 22:59 -0400
                Re: El Capitan oddities Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-10 09:48 -0400
      Re: El Capitan oddities Tim Streater <timstreater@greenbee.net> - 2015-10-09 12:30 +0100

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