Re: Samsung SSD 850 PRO 1T : any good for PostgreSQL?

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