This doesn't work the same way as system RAM though. You can't extend your innodb buffer pool onto a block device or filesystem. Though this technology would be good for segregating things like InnoDB logs and mysql binary logs.
-Aaron On Thu, Jan 22, 2009 at 7:40 AM, mos <mo...@fastmail.fm> wrote: > At 01:08 PM 1/20/2009, you wrote: > >> While specing out a new server, I was wondering if there is any limit to >> how much memory can be allocated to mysql 5.1. If a server has 16GB of ram, >> can mysql take advantage of that much ram (minus a reserved amount for the >> OS obviously)? Is there any limit such as those imposed by 32-bit >> processors? >> >> Thanks! >> > > You can get an external ram drive fairly cheap that will handle 32gb per > drive (4gb sticks) and can use raid 0 to give you larger drives. They cost > around $500 for the hardware not including the RAM. On page 9 of the report > http://techreport.com/articles.x/16255/9 they show database and web server > performance that blows away all hard drives by a factor of 10x. They have a > small battery backup that will preserve the contents between reboots and for > a few hours during power loss. An option allows you to back up the contents > to flash storage. Of course you should use a UPS on it. What appeals to me > is you can use it 24/7 and it is not going to wear out. This is definitely > going on my wish list. :-) > > http://techreport.com/articles.x/16255/1 > > Mike > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/mysql?unsub=aaronb...@gmail.com > >
