Re: BBU still needed with SSD?
От | Florian Weimer |
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Тема | Re: BBU still needed with SSD? |
Дата | |
Msg-id | 82vcuyd7p5.fsf@mid.bfk.de обсуждение исходный текст |
Ответ на | Re: BBU still needed with SSD? (Yeb Havinga <yebhavinga@gmail.com>) |
Ответы |
Re: BBU still needed with SSD?
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Список | pgsql-performance |
* Yeb Havinga: > The biggest drawback of 2 SSD's with supercap in hardware raid 1, is > that if they are both new and of the same model/firmware, they'd > probably reach the end of their write cycles at the same time, thereby > failing simultaneously. I thought so too, but I've got two Intel 320s (I suppose, the report device model is "SSDSA2CT040G3") in a RAID 1 configuration, and after about a month of testing, one is down to 89 on the media wearout indicator, and the other is still at 96. Both devices are deteriorating, but one at a significantly faster rate. -- Florian Weimer <fweimer@bfk.de> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99
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