[tahoe-dev] [tahoe-lafs] #913: Support running a storage node per drive easily

tahoe-lafs trac at allmydata.org
Mon Jan 18 22:37:59 UTC 2010


#913: Support running a storage node per drive easily
-------------------------+--------------------------------------------------
 Reporter:  davidsarah   |           Owner:  nobody   
     Type:  enhancement  |          Status:  new      
 Priority:  major        |       Milestone:  undecided
Component:  unknown      |         Version:  1.5.0    
 Keywords:  usability    |   Launchpad_bug:           
-------------------------+--------------------------------------------------

Comment(by warner):

 hm. Grids with heterogeneous-capacity storage nodes, whether comprised of
 a variety of sizes of local drives, or a variety of sizes of remote
 storage servers, will not be able to offer uniform high reliability for
 all files. Sure, we're more flexible than a simple RAID scheme (which will
 refuse to use the leftover space on the larger drives), but in our basic
 server-selection algorithm, we'll fill the small drives quickly and then
 eventually wind up putting all the shares on the largest disk, lowering
 reliability for those files down to the reliability of a single disk.

 OTOH, it might still be useful to offer "reliable" storage up to the size
 of your smallest (or 2nd-largest) drive, and then unreliable non-redundant
 storage with the remaining space.

-- 
Ticket URL: <http://allmydata.org/trac/tahoe/ticket/913#comment:5>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid


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