Re: Transaction Log
| От | Mark Mielke |
|---|---|
| Тема | Re: Transaction Log |
| Дата | |
| Msg-id | 46D5CEDD.5010303@mark.mielke.cc обсуждение |
| Ответ на | Transaction Log (mbguy2000-1@yahoo.com) |
| Ответы |
Re: Transaction Log
Re: Transaction Log |
| Список | pgsql-performance |
mbguy2000-1@yahoo.com wrote:
For those that don't know what I am talking about - they are PCI devices that present themselves as a hard drive, but are filled with commodity RAM instead of a magnetic platter, and a battery that lasts a few weeks without external power.
Cheers,
mark
How popular are the battery backed RAM drives that exist today? I don't recall seeing them spoken about in this mailing list. The local geek shop has these devices on sale. Are they still too expensive? For best performance, the transaction log should be on a separate disk.
Does the writing of the log benefit from a battery backed controller as well? If not, what do people think about writing the transaction log to a flash card or the like?
For those that don't know what I am talking about - they are PCI devices that present themselves as a hard drive, but are filled with commodity RAM instead of a magnetic platter, and a battery that lasts a few weeks without external power.
Cheers,
mark
-- Mark Mielke <mark@mielke.cc>
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