<div dir="ltr">Hello,<div><br></div><div>If these 4 virtual drives are then put together to get one big volume, it will goes as the slower one. </div><div>I would put the LSI to 64K to get same size everywhere anyway, even if it's transparent/hidden from an OS perspective</div><div><br></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature">Cordialement,<br>Mathieu CHATEAU<br><a href="http://www.lotp.fr" target="_blank">http://www.lotp.fr</a></div></div>
<br><div class="gmail_quote">2015-07-12 11:16 GMT+02:00 Geoffrey Letessier <span dir="ltr"><<a href="mailto:geoffrey.letessier@cnrs.fr" target="_blank">geoffrey.letessier@cnrs.fr</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear all,<br>
<br>
Because I’m currently reconstructing all my GlusterFS volumes, I just noticed that all of my RAID virtual drives did not necessarily have the same stripe size and I wonder whether it would be better to reconstruct/rebuild these virtual drives with the same stripe size ... What do you recommend ?<br>
<br>
Actually, 2 virtual drives of 4 have a stripe size set to 64KB (Dell Perc H8xx RAID controller default settings) and the 2 left are set to 256KB (LSI MegaRAID 9286-8e default settings). With iozone tests, i notice Dell Perc VD have better results than LSI ones. (~1.3-4GBs vs ~1.2GBs) and I wonder if these parameters are not in cause...<br>
<br>
It’s very urgent for me to know what i have to do because I need to reconstruct and set all my volumes and back transfert roughly 40TBs in distributed and replicated volumes as quickly as possible…<br>
<br>
Thanks by advance,<br>
Geoffrey<br>
------------------------------------------------------<br>
Geoffrey Letessier<br>
Responsable informatique & ingénieur système<br>
UPR 9080 - CNRS - Laboratoire de Biochimie Théorique<br>
Institut de Biologie Physico-Chimique<br>
13, rue Pierre et Marie Curie - 75005 Paris<br>
Tel: 01 58 41 50 93 - eMail: <a href="mailto:geoffrey.letessier@ibpc.fr">geoffrey.letessier@ibpc.fr</a><br>
<br>
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</blockquote></div><br></div>