Yes and no :)<div><br></div><div>While olaf is right, it needs two independent blockdevices, partitions are just fine.</div><div>So one could have in fact have a 200g ssd as a boot device and partitions it lets say </div><div><br></div><div>30g os</div><div>20g hawc</div><div>150g lroc</div><div><br></div><div>you have to keep in mind that lroc and hawc have 2 very different requirements on the 'device'. if you loose hawc, you loose one copy of critical data (that's why the log needs to be replicated), if you loose lroc, you only loose cached data stored somewhere else, so the recommendation is to use soemwhat reliable 'devices' for hawc, while for lroc it could be simple consumer grade ssd's.</div><div>So if you use one for both, it should be reliable.</div><div><br></div><div>Sven<br><br><div class="gmail_quote"><div dir="ltr">On Sat, Nov 5, 2016, 6:40 AM Olaf Weiser <<a href="mailto:olaf.weiser@de.ibm.com">olaf.weiser@de.ibm.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" id="gmail_block_quote0"><div class="gmail_msg"><font style="white-space:pre-wrap;font-family:Helvetica Neue,Helvetica,Arial,sans-serif;margin:1em 0" class="gmail_msg">You can use both -HAWC ,LROC- on the same node... but you need dedicated ,independent ,block devices ...<br class="gmail_msg">In addition for hawc, you could consider replication and use 2 devices, even across 2 nodes. ...<br class="gmail_msg"><br class="gmail_msg">Gesendet von IBM Verse</font><br class="gmail_msg"><br class="gmail_msg"><div class="m_6551034470777593982domino-section gmail_msg" dir="ltr"><div class="m_6551034470777593982domino-section-head gmail_msg"><span class="m_6551034470777593982domino-section-title gmail_msg"><font color="#424282" class="gmail_msg">leslie elliott --- [gpfsug-discuss] HAWC and LROC --- </font></span></div><div class="m_6551034470777593982domino-section-body gmail_msg"><br class="gmail_msg"><table width="100%" border="0" cellspacing="0" cellpadding="0" class="gmail_msg"><tbody><tr valign="top" class="gmail_msg"><td width="1%" style="width:96px" class="gmail_msg"><font size="2" color="#5F5F5F" class="gmail_msg">Von:</font></td><td width="100%" style="width:auto" class="gmail_msg"><font size="2" class="gmail_msg">"leslie elliott" <<a href="mailto:leslie.james.elliott@gmail.com" class="gmail_msg" target="_blank">leslie.james.elliott@gmail.com</a>></font></td></tr><tr valign="top" class="gmail_msg"><td width="1%" style="width:96px" class="gmail_msg"><font size="2" color="#5F5F5F" class="gmail_msg">An:</font></td><td width="100%" style="width:auto" class="gmail_msg"><font size="2" class="gmail_msg">"gpfsug main discussion list" <<a href="mailto:gpfsug-discuss@spectrumscale.org" class="gmail_msg" target="_blank">gpfsug-discuss@spectrumscale.org</a>></font></td></tr><tr valign="top" class="gmail_msg"><td width="1%" style="width:96px" class="gmail_msg"><font size="2" color="#5F5F5F" class="gmail_msg">Datum:</font></td><td width="100%" style="width:auto" class="gmail_msg"><font size="2" class="gmail_msg">Sa. 05.11.2016 02:09</font></td></tr><tr valign="top" class="gmail_msg"><td width="1%" style="width:96px" class="gmail_msg"><font size="2" color="#5F5F5F" class="gmail_msg">Betreff:</font></td><td width="100%" style="width:auto" class="gmail_msg"><font size="2" class="gmail_msg">[gpfsug-discuss] HAWC and LROC</font></td></tr></tbody></table><hr width="100%" size="2" align="left" noshade style="color:#8091a5" class="gmail_msg"><br class="gmail_msg"></div></div></div><div class="gmail_msg"><div class="m_6551034470777593982domino-section gmail_msg" dir="ltr"><div dir="ltr" class="gmail_msg"><br class="gmail_msg"><div class="gmail_msg">Hi I am curious if anyone has run these together on a client and whether it helped </div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">If we wanted to have these functions out at the client to optimise compute IO in a couple of special cases </div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">can both exist at the same time on the same nonvolatile hardware or do the two functions need independent devices</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">and what would be the process to disestablish them on the clients as the requirement was satisfied </div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">thanks</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">leslie</div></div><br class="gmail_msg">
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