JBOD before 3.6 or so mixed data between disks in a way that if one disk failed, you needed to treat them all as failed and replace the host
-- Jeff Jirsa > On Jun 12, 2018, at 1:53 AM, Kyrylo Lebediev <kyrylo_lebed...@epam.com> wrote: > > Also it worth noting, that usage of JBOD isn't recommended for older > Cassandra versions, as there are known issues with data imbalance on JBOD. > iirc JBOD data imbalance was fixed in some 3.x version (3.2?) > For older versions creation one large filesystem on top md or lvm device > seems to be a better choice. > > From: Eunsu Kim <eunsu.bil...@gmail.com> > Sent: Tuesday, June 12, 2018 9:06:07 AM > To: user@cassandra.apache.org > Subject: Re: What will happen after adding another data disk > > In my experience, adding a new disk and restarting the Cassandra process > slowly distributes the disk usage evenly, so that existing disks have less > disk usage > >> On 12 Jun 2018, at 11:09 AM, wxn...@zjqunshuo.com wrote: >> >> Hi, >> I know Cassandra can make use of multiple disks. My data disk is almost full >> and I want to add another 2TB disk. I don't know what will happen after the >> addition. >> 1. C* will write to both disks util the old disk is full? >> 2. And what will happen after the old one is full? Will C* stop writing to >> the old one and only writing to the new one with free space? >> >> Thanks! >
