Robert Haas wrote:
> Old row versions have to be kept around until they're no longer of
> interest to any still-running transaction.
Thanks for the explanation.
Regarding the snippet above, why would the intermediate history of
multiply-modified uncommitted rows be of interest to anything, or is
Hi. I've only been using PostgreSQL properly for a week or so, so I
apologise if this has been covered numerous times, however Google is
producing nothing of use.
I'm trying to import a large amount of legacy data (billions of
denormalised rows) into a pg database with a completely different schem
Glyn Astill wrote:
>> Stupid question, but why do people bother with the Perc line of
>> cards if the LSI brand is better? It seems the headache of trying
>> to get the Perc cards to perform is not worth any money saved.
>
> I think in most cases the dell cards actually cost more, people end
> u
Scott Carey wrote:
> You probably don’t want a single array with more than 32 drives anyway,
> its almost always better to start carving out chunks and using software
> raid 0 or 1 on top of that for various reasons. I wouldn’t put more than
> 16 drives in one array on any of these RAID cards, they
Rajesh Kumar Mallah wrote:
>> I've checked out the latest Areca controllers, but the manual
>> available on their website states there's a limitation of 32 disks
>> in an array...
>
> Where exactly is there limitation of 32 drives. the datasheet of
> 1680 states support upto 128drives using en
Glyn Astill wrote:
> Did you try flashing the PERC with the LSI firmware?
>
> I tried flashing a PERC3/dc with LSI firmware, it worked fine but I
> saw no difference in performance so I assumed it must be somethign
> else on the board that cripples it.
No, for a few reasons:
1. I read somewhere
Arjen van der Meijden wrote:
> Afaik the Perc 5/i and /e are more or less rebranded LSI-cards (they're
> not identical in layout etc), so it would be a bit weird if they
> performed much less than the similar LSI's wouldn't you think?
I've recently had to replace a PERC4/DC with the exact same ca
