[install-discuss] Caiman Architecture document posted for review

[Moinak Ghosh]

>> The argument that disks are now so large that it's no longer
>> necessary to worry about space simply isn't true. Systems with
>> 18G drives (or similar) are still commonplace and entirely viable.
>> With the growth in virtualization, large drives will get chopped up
>> into much smaller chunks for allocation to installed systems.
>> And many Sun systems still get shipped with 73G drives. While
>> this may seem excessive now, it's not going to look generous
>> in 5 years time. Besides, Sun still sell reconditioned systems with
>>     

   I think 5 years is an optimistic view.
   80GB Drives are not enough for me today! 120GB will not be enough in
   2 years time.

>> 9G drives, and we mustn't completely ignore the hobbyist market
>> where less generous configuarrions are common.
>>     
>
>
> If Sun wants to drop the SXCR program, then abandoning in-place
> upgrades would be one way to diminish the effectiveness to near
> zero.
>   

   Disk space might be cheap, but enough software and data bloat is present
   and growing today to gobble up whatever space you can throw at it. IMHO
   not supporting in-place upgrade will hit workstation users hard. Most 
of the
   disk space available will be partitioned off for various stuff and 
there will
   be multiboot configurations. It will be a pain to allocate space for 
liveupgrade.
   A short downtime is not a factor in this scenario.

   -> 2. There is no rollback mechanism, short of a full restore, if 
something gets broken.

   ZFS root should help here.

   Community participation and participation of the individual 
contributor in trying
   out newer versions of Solaris on different hardware will diminish greatly
   without in-place upgrade.

Regards,
Moinak.

> Casper
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