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Re: dell versus hp

From: Tore Halset <halset(at)pvv(dot)ntnu(dot)no>
To: pgsql-performance(at)postgresql(dot)org
Cc: Claus Guttesen <kometen(at)gmail(dot)com>
Subject: Re: dell versus hp
Date: 2007-11-06 14:15:39
Message-ID: F800DE70-6D9C-4DA1-8E0E-3ED58C28E26A@pvv.ntnu.no (view raw or flat)
Thread:
Lists: pgsql-performance
On Nov 6, 2007, at 12:36 , Claus Guttesen wrote:

>> All of our existing servers are from Dell, but I want to look at some
>> other options as well. We are currently looking at rack boxes with 8
>> internal SAS discs. Two mirrored for OS, Two mirrored for WAL and 4  
>> in
>> raid 10 for the base.
>>
>> Here are our current alternatives:
>>
>> 1) Dell 2900 (5U)
>> 8 * 146 GB SAS 15Krpm 3,5"
>> 8GB ram
>> Perc 5/i. battery backup. 256MB ram.
>> 2 * 4 Xeon 2,66GHz
>>
>> 2) Dell 2950 (2U)
>> 8 * 146 GB SAS 10Krpm 2,5" (not really selectable, but I think the
>> webshop is wrong..)
>> 8GB ram
>> Perc 5/i. battery backup. 256MB ram.
>> 2 * 4 Xeon 2,66GHz
>>
>> 3) HP ProLiant DL380 G5 (2U)
>> 8 * 146 GB SAS 10Krpm 2,5"
>> 8GB ram
>> P400 raid controller. battery backup. 512MB ram.
>> 2 * 2 Xeon 3GHz
>>
>> All of those alternatives cost ca the same. How much (in numbers)
>> better are 15K 3,5" than 10K 2,5"? What about the raid controllers?
>> Any other alternatives in that price-range?
>
> When writing is important you want to use 15K rpm disks. I personally
> use the DL380 and is very satisfied with the hardware and the buildin
> ciss-controller (with 256 MB cache using 10K rpm disks).
>
> How much space do you need? 72 GB is the largest 15K 2.5" sas-disk  
> from HP.

Okay, thanks. We need 100GB for the database, so 4 72GB in raid 10  
will be fine.

Regards,
  - Tore.

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