<div dir="ltr">Yes the flash-backed RAID cards use a super-capacitor to backup the flash cache. You have a choice of flash module sizes to include on the card. The card supports RAID modes as well as JBOD. <div><br></div><div>I do not know if Gluster can make use of battery-backed flash-based Cache when the disks are presented by the RAID card in JBOD. The Hardware vendor asked "Do you know if Gluster makes use of flash-cache in JBOD?"</div><div><br></div><div>If it does, I'm not certain how the size of this flash cache affects the operation. </div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div dir="ltr" style="font-size:12.8px"><font size="4" face="arial narrow, sans-serif"><b>Vincent Royer</b></font></div><div dir="ltr"><div style="font-size:12.8px"><font size="4" face="arial narrow, sans-serif"><b>778-825-1057</b></font></div><div style="font-size:12.8px"><font size="4" face="arial narrow, sans-serif"><b><br></b></font></div><div style="font-size:12.8px"><a href="http://www.epicenergy.ca/" target="_blank"><img src="https://lh3.googleusercontent.com/ezD9JxeN67lTscselHjW4ZEqvQRj_i_T_Ky_s__GkR0AtanG1nK52CD1Rdhmyzbk7XRPf-Rhhnr2-SLPmhtd0J8xVMp0xOiR20ebQVb6jU2xwJPKN4lePRq5G2p93ybqA4SnqjCWCvEsNlK37a9FtStdFcTJyIoS2aHKiL69L3bZg1g7mEAMr7IHXVYvHgq3MX9rNaqIQx9T3uPuIHEDIfxrgpCrsBoEamgaRHj5hcpEobnogqCqpa1sRcKy927TSeR5BbVLM1-wn0h-4LvE8CMqj30jpQULxZ9uXEg_S6sR3ZeZjtkkRvgK4l_wiivWlyV_SjCDQ5QREG3jkuCjXC04i1NNmziGZZNWYsaohE6khrN4JGVtvaSOiS2woYJNz3Gt0EucxJp3eUBYspzTl9iZia7bLvFEGIODvmfjRVZJmnCrFucJxGkAtWn_EUIbxJXS5NWAFnvBoixQP563Fbu7dFKL77lDcb4PHwrnJVjqcgU0OTeiMBlMvEt97YgMpMvdi7rx9L4DeEbrIGUovgx4QLfRRoF_9u2mxFu8FHupCxfocSyB3vs8gqOLvVdx42qwiLN0sGLAg8K3G_vFwVNddXQ_yb3cGeCEAOTnk7jfiP4O4jsPIW2RRbnKKL-usL11Tp7gkxbgRouLOoyqpbisjA4vRWDeylj1yDGyBg=w400-h38-no" width="200" height="18"><br></a></div><div><b><font face="arial narrow, sans-serif" size="2">SUSTAINABLE MOBILE <font color="#6aa84f">ENERGY </font>SOLUTIONS</font></b></div></div></div><div><br></div><div><br><div><div><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Mon, Apr 9, 2018 at 10:34 AM, Alex Chekholko <span dir="ltr"><<a href="mailto:alex@calicolabs.com" target="_blank">alex@calicolabs.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Your question is difficult to parse. Typically RAID and JBOD are mutually exclusive. By "flash-backed", do you mean a battery backup unit (BBU) on your RAID controller?</div><div class="gmail_extra"><br><div class="gmail_quote"><span class="">On Mon, Apr 9, 2018 at 8:49 AM, Vincent Royer <span dir="ltr"><<a href="mailto:vincent@epicenergy.ca" target="_blank">vincent@epicenergy.ca</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><div>Is a flash-backed Raid required for JBOD, and should it be 1gb, 2, or 4gb flash?<br></div></div></blockquote><div><br></div></span><div>Is anyone able to clarify this requirement for me? </div></div><br></div></div>
<br></span><span class="">______________________________<wbr>_________________<br>
Gluster-users mailing list<br>
<a href="mailto:Gluster-users@gluster.org" target="_blank">Gluster-users@gluster.org</a><br>
<a href="http://lists.gluster.org/mailman/listinfo/gluster-users" rel="noreferrer" target="_blank">http://lists.gluster.org/mailm<wbr>an/listinfo/gluster-users</a><br></span></blockquote></div><br></div>
</blockquote></div><br></div>