Re: Advice configuring ServeRAID 8k for performance - Mailing list pgsql-performance

From Justin Pitts
Subject Re: Advice configuring ServeRAID 8k for performance
Date
Msg-id AANLkTim2DpAyfe0ZMJafRVaOpb0jo3KgyZjjjzxMA8nE@mail.gmail.com
Whole thread Raw
In response to Re: Advice configuring ServeRAID 8k for performance  (Scott Marlowe <scott.marlowe@gmail.com>)
List pgsql-performance
> Yes, I know that.  I am very familiar with how RAID6 works.  RAID5
> with the hot spare already rebuilt / built in is a good enough answer
> for management where big words like parity might scare some PHBs.
>
>> In terms of storage cost, it IS like paying for RAID5 + a hot spare,
>> but the protection is better.
>>
>> A RAID 5 with a hot spare built in could not survive 2 simultaneous
>> drive failures.
>
> Exactly.  Which is why I had said with the hot spare already built in
> / rebuilt.

My apologies. The 'rebuilt' slant escaped me. Thats a fair way to cast it.

> Geeze, pedant much?

Of course!

pgsql-performance by date:

Previous
From: Sean Chen
Date:
Subject: Re: vacuum performance on insert
Next
From: Michael March
Date:
Subject: Completely un-tuned Postgresql benchmark results: SSD vs desktop HDD