От: Bruno Wolff III
Тема: Re: Tuning PostgreSQL
Дата: ,
Msg-id: 20030722171033.GB2686@wolff.to
(см: обсуждение, исходный текст)
Ответ на: Re: Tuning PostgreSQL  (Vincent van Leeuwen)
Список: pgsql-performance

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Tuning PostgreSQL  ("Alexander Priem", )
 Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
 Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
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   Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
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     Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
    Re: Tuning PostgreSQL  ("Alexander Priem", )
  Re: Tuning PostgreSQL  (Ron Johnson, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Ron Johnson, )
   Re: Tuning PostgreSQL  (Andrew McMillan, )
    Re: Tuning PostgreSQL  ("Arjen van der Meijden", )
     Re: Tuning PostgreSQL  (Tom Lane, )
     Re: Tuning PostgreSQL  ("Balazs Wellisch", )
      Re: Tuning PostgreSQL  (Josh Berkus, )
 Re: Tuning PostgreSQL  ("Roman Fail", )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Josh Berkus, )
    Re: Tuning PostgreSQL  (Vincent van Leeuwen, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Vincent van Leeuwen, )
    Re: Tuning PostgreSQL  (Bruno Wolff III, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Andrew Sullivan, )
   Re: Tuning PostgreSQL  ("Jim C. Nasby", )
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     Re: Tuning PostgreSQL  (Greg Stark, )
      Re: Tuning PostgreSQL  (Ron Johnson, )
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       Re: Tuning PostgreSQL  ("scott.marlowe", )
        Re: Tuning PostgreSQL  (Ron Johnson, )
         Re: Tuning PostgreSQL  ("scott.marlowe", )
          Re: Tuning PostgreSQL  (Ron Johnson, )
           Re: Tuning PostgreSQL  ("scott.marlowe", )
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             Re: Tuning PostgreSQL, pt 2  (Ron Johnson, )
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      Re: Tuning PostgreSQL  (Will LaShell, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
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  Re: Tuning PostgreSQL  (Vivek Khera, )
 'View'-performance  ("Alexander Priem", )
  Re: 'View'-performance  (Tom Lane, )

On Tue, Jul 22, 2003 at 11:40:35 +0200,
  Vincent van Leeuwen <> wrote:
>
> About RAID types: the fastest RAID type by far is RAID-10. However, this will
> cost you a lot of useable diskspace, so it isn't for everyone. You need at
> least 4 disks for a RAID-10 array. RAID-5 is a nice compromise if you want as
> much useable diskspace as possible and still want to be redundant. RAID-1 is
> very useful for small (2-disk) arrays.

Note that while raid 10 requires 4 disks, you get the space of 2 disks.
This is the same ratio as for raid 1.


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