Re: Do I have a hardware or a software problem?

Well, In fact I do (as you can see from my configuration). I have a similar server running with hot standby replication - and it runs two 3T HDD in a RAID1 array.

So - is it still very bad if I choose to put four intel 520 disks in a RAID10 array on the other production server?

Den 12/12/2012 kl. 03.47 skrev Craig Ringer <craig(at)2ndquadrant(dot)com>:

> On 12/12/2012 10:13 AM, Evgeny Shishkin wrote:
>>
>> Yes, i am aware of this issue. Never experienced this neither on intel 520, no ocz vertex 3.
>>
>
> I wouldn't trust either of those drives. The 520 doesn't have Intel's " Enhanced Power Loss Data Protection"; it's going to lose its buffers if it loses power. Similarly, the Vertex 3 doesn't have any kind of power protection. See:
>
> http://www.intel.com/content/www/us/en/solid-state-drives/ssd-320-series-power-loss-data-protection-brief.html
> http://ark.intel.com/products/family/56572/Intel-SSD-500-Family
>
> http://www.ocztechnology.com/res/manuals/OCZ_SSD_Breakdown_Q2-11_1.pdf
>
> The only way I'd use those for a production server was if I had synchronous replication running to another machine with trustworthy, durable storage - and if I didn't mind some downtime to restore the corrupt DB from the replica after power loss.
>
> --
> Craig Ringer http://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Training & Services