Re: SSD + RAID
От | Merlin Moncure |
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Тема | Re: SSD + RAID |
Дата | |
Msg-id | b42b73150911130759t3d369de5j330929a4b9666d6@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: SSD + RAID (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>) |
Ответы |
Re: SSD + RAID
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Список | pgsql-performance |
2009/11/13 Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>: > Laszlo Nagy wrote: >> * I need at least 32GB disk space. So DRAM based SSD is not a real >> option. I would have to buy 8x4GB memory, costs a fortune. And >> then it would still not have redundancy. > > At 32GB database size, I'd seriously consider just buying a server with > a regular hard drive or a small RAID array for redundancy, and stuffing > 16 or 32 GB of RAM into it to ensure everything is cached. That's tried > and tested technology. lots of ram doesn't help you if: *) your database gets written to a lot and you have high performance requirements *) your data is important (if either of the above is not true or even partially true, than your advice is spot on) merlin
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