> From: Paul Richards [mailto:paul.richa...@gmail.com] > Sent: Wednesday, September 02, 2009 3:30 AM > > Is there a way to combine a large slow drive with a fast small drive > in such a way that the faster drive simply becomes a cache for the > larger drive? > > I imagine a computer where I'd like to have a small fast SSD and a > large but slow spinning disk. I'd like to put the two block devices > together so that I'm presented with a single logical block device, > where the operating system is using the SSD as a cache (either > inclusive or exclusive, write-though or otherwise) of the spinning > disk. > > Is there some magic in LVM that can do this? > > If there is nothing at the block device level can it be done at the > filesystem level?
Using an SSD as a cache for a hard drive isn't a good idea, since SSD's are orders of magnitude slower in writing than hard drives are. Put your OS on an SSD, and put /home (and probably /var and /tmp) on a fast hard drive, and call it a day. Here's a great article giving you more info than you probably ever wanted to know about the various flavors of SSDs: http://www.anandtech.com/storage/showdoc.aspx?i=3531 Hope this helps! -- Kevin -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
