<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div><br></div><div>There is difference between server and bricks which we should understand.<br></div><div>When we say m+n = 6+2, then we are talking about the bricks.<br></div><div>Total number of bricks are m+n = 8. <br></div><div><br></div><div>Now, these bricks could be anywhere on any server. The only thing is that the server should be a part of cluster.<br></div><div>You can have all the 8 bricks on one server or on 8 different servers.<br></div><div>So, there is no *restriction* on number of servers when you add bricks. However, the number of bricks which you want to add should be in multiple of the <br></div><div>configuration you have.<br></div><div><br></div><div>In you case it should be 8, 16, 24....<br></div><div><br></div><div>"can I add a single node moving from 6:2 to 7:2 and so on ?"</div><div>You can not make 6+2 config volume to 7+2 volume. You can not change the *configuration* of an existing volume.</div><div>You can just add bricks in multiple to increase the storage capacity.<br></div><div><br></div><div>Ashish<br></div><div> <br></div><div><br></div><div><br></div><div><br></div><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Serkan Çoban" <cobanserkan@gmail.com><br><b>To: </b>"Gandalf Corvotempesta" <gandalf.corvotempesta@gmail.com><br><b>Cc: </b>"gluster-users" <Gluster-users@gluster.org><br><b>Sent: </b>Saturday, April 22, 2017 5:34:52 PM<br><b>Subject: </b>Re: [Gluster-users] Add single server<br><div><br></div>In EC if you have m+n configuration, you have to grow by m+n bricks.<br>If you have 6+2 you need to add another 8 bricks.<br><div><br></div>On Sat, Apr 22, 2017 at 3:02 PM, Gandalf Corvotempesta<br><gandalf.corvotempesta@gmail.com> wrote:<br>> I'm still trying to figure out if adding a single server to an<br>> existing gluster cluster is possible or not, based on EC or standard<br>> replica.<br>><br>> I don't think so, because with replica 3, when each server is already<br>> full (no more slots for disks), I need to add 3 server at once.<br>><br>> Is this the same even with EC ? In example, a 6:2 configuration is<br>> "fixed" or can I add a single node moving from 6:2 to 7:2 and so on ?<br>> _______________________________________________<br>> Gluster-users mailing list<br>> Gluster-users@gluster.org<br>> http://lists.gluster.org/mailman/listinfo/gluster-users<br>_______________________________________________<br>Gluster-users mailing list<br>Gluster-users@gluster.org<br>http://lists.gluster.org/mailman/listinfo/gluster-users<br></div><div><br></div></div></body></html>