<div dir="ltr">let be clear... you can do this with Lustre as well (we do it all the time). We also rebalance the OST's all the time...<div><br><div><br><div class="gmail_quote"><div dir="ltr">On Tue, Jul 24, 2018 at 10:31 PM John Hearns via Beowulf <<a href="mailto:beowulf@beowulf.org">beowulf@beowulf.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Forgive me for saying this, but the philosophy for software defined storage such as CEPH and Gluster is that forklift style upgrades should not be necessary.</div><div>When a storage server is to be retired the data is copied onto the new server then the old one taken out of service. Well, copied is not the correct word, as there are erasure-coded copies of the data. Rebalanced is probaby a better word.</div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Dr Stuart Midgley<br><a href="mailto:sdm900@gmail.com" target="_blank">sdm900@gmail.com</a></div></div></div></div></div>