Message-ID: <5502E31E.4020301@matrix.gatewaynet.com>
Date: Fri, 13 Mar 2015 15:16:14 +0200
From: Achilleas Mantzios <achill@matrix.gatewaynet.com>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:24.0) Gecko/20100101 Thunderbird/24.3.0
MIME-Version: 1.0
To: pgsql-admin@postgresql.org
Subject: Re: Samsung SSD 850 PRO 1T : any good for PostgreSQL?
References: <5502C98F.2090806@matrix.gatewaynet.com>
 <5502CCAF.4030606@commandprompt.com>
In-Reply-To: <5502CCAF.4030606@commandprompt.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk
Sender: pgsql-admin-owner@postgresql.org

On 13/03/2015 13:40, Joshua D. Drake wrote:
> On 03/13/2015 04:27 AM, Achilleas Mantzios wrote:
>>
>> Hello,
>>
>> we maintain a DB of nearly 500GB of data (and always getting larger),
>> and we are currently thinking of moving to SSD.
>> I have read Greg Smith's book on PostgreSQL 9.0 High Performance and his
>> considerations on SSD and the way that write back works.
>>
>> This particular model (Samsung SSD 850 PRO 1T) does not employ any
>> special circuitry, battery or capacitor
>> to enforce that the data are really flushed to the medium.
>>
>> What is your take on this? Is it dangerous to have PgSQL on this disk
>> especially in cases of power outages? (we have full UPS support, however
>> nothing can be overlooked, anything can happen)
>
> If it does not have power loss protection, don't use it.

Thanx Joshua.

If theoretically somehow we eliminate the power loss factor, would it make sense to use such a disk?

>
> JD
>


-- 
Achilleas Mantzios
Head of IT DEV
IT DEPT
Dynacom Tankers Mgmt


-- 
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin