Re: SCSI vs SATA
| От | Joshua D. Drake |
|---|---|
| Тема | Re: SCSI vs SATA |
| Дата | |
| Msg-id | 4613C6F1.3090009@commandprompt.com обсуждение исходный текст |
| Ответ на | Re: SCSI vs SATA (Stefan Kaltenbrunner <stefan@kaltenbrunner.cc>) |
| Ответы |
Re: SCSI vs SATA
|
| Список | pgsql-performance |
>> SATAII brute forces itself through some of its performance, for
>> example 16MB write cache on each drive.
>
> sure but for any serious usage one either wants to disable that
> cache(and rely on tagged command queuing or how that is called in SATAII
Why? Assuming we have a BBU, why would you turn off the cache?
> world) or rely on the OS/raidcontroller implementing some sort of
> FUA/write barrier feature(which linux for example only does in pretty
> recent kernels)
Sincerely,
Joshua D. Drake
>
>
> Stefan
>
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