On Wed, Oct 21, 2015 at 2:00 PM, Miles Fidelman <mfidelman@xxxxxxxxxxxxxxxx> wrote: > Hi Folks, > > Perhaps someone here might be able to point me at a reference or two on > alternatives and best practices for configuring storage for a server - using > a mix of SSDs and conventional drives. > > I'm in the process of upgrading a small cluster of 4 machines - each > containing RAID arrays, with DRBD across clusters to support failover. Easy > enough with a uniform collection of HDDs. But I can't get my head around > how to add SSDs into the mix - what with the mismatch in access speeds and > all, it would seem like one needs a more complex configuration with a level > of caching between the faster and slower media. > > Seems like someone would have written a book, or tutorial, or case study, or > conference presentation - but damned if I can find anything. Any pointers, > or guidance, would be much appreciated. > > Thanks, > > Miles Fidelman > > -- > In theory, there is no difference between theory and practice. > In practice, there is. .... Yogi Berra > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html Hi Miles, might me long shot, but can take a look on LVM caching.. Good description how to setup it is here : http://blog-vpodzime.rhcloud.com/?p=45 Working for me for months now.... without DRBD. HTH, -- Ladislav Máte -- -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
