<div dir="ltr"><div>And no expander !!!! ;- ))) </div><div>I use 3 IBM SAS1015 flashed to IT, the only quality SAS controller with afordable price that I can find here in Brasil . </div><div> </div>Fábio Rabelo </div><div class="gmail_extra"> <div class="gmail_quote">2015-04-07 11:38 GMT-03:00 Chris Nagele <<a href="mailto:nagele@wildbit.com" target="_blank">nagele@wildbit.com</a>>: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">That helps a lot. That SC216BA-R1K28LPB chassis looks really nice, especially the two extra bays in the back for the rpool. Thanks everyone! Chris Nagele Co-founder, Wildbit Beanstalk, Postmark, <a href="http://dploy.io" target="_blank">dploy.io</a> On Mon, Apr 6, 2015 at 10:04 AM, Schweiss, Chip <<a href="mailto:chip@innovates.com">chip@innovates.com</a>> wrote: > > On Mon, Apr 6, 2015 at 8:53 AM, Fábio Rabelo <<a href="mailto:fabio@fabiorabelo.wiki.br">fabio@fabiorabelo.wiki.br</a>> > wrote: >> >> Sorry, forget to forward to the list ... >> >> >> ---------- Forwarded message ---------- >> From: Fábio Rabelo <<a href="mailto:fabio@fabiorabelo.wiki.br">fabio@fabiorabelo.wiki.br</a>> >> Date: 2015-04-06 10:51 GMT-03:00 >> Subject: Re: [OmniOS-discuss] All SSD pool advice >> To: Chris Nagele <<a href="mailto:nagele@wildbit.com">nagele@wildbit.com</a>> >> >> >> I never get my hands at that 4U model ... >> >> I have 2 of this babys in a customer of mine : >> >> <a href="http://www.supermicro.com/products/chassis/2U/216/SC216BA-R1K28LP.cfm" target="_blank">http://www.supermicro.com/products/chassis/2U/216/SC216BA-R1K28LP.cfm</a> >> >> Each one with 24 1TB Samsung 850PRO for a litle over an year, >> OminOS+Napp-it , no issue whatsoever ... >> >> Expanded Chassis brings me lots and lots of headaches ... > > > The system I've built with interposers has SAS expanders and gives me no > problems. Samsung SSDs are the only SSD I've found that works well with the > interposer. > > -Chip >> >> >> >> Fábio Rabelo >> >> 2015-04-06 10:41 GMT-03:00 Chris Nagele <<a href="mailto:nagele@wildbit.com">nagele@wildbit.com</a>>: >> >>> Thanks everyone. Regarding the expanders, our 4U servers are on the >>> following chassis: >>> >>> <a href="http://www.supermicro.com/products/chassis/4U/846/SC846E16-R1200.cfm" target="_blank">http://www.supermicro.com/products/chassis/4U/846/SC846E16-R1200.cfm</a> >>> >>> We are using all SAS disks, except for the SSDs. How big is the risk >>> here when it comes to SAS -> SATA conversion? Our newer servers have >>> direct connections on each lane to the disk. >>> >>> Chris >>> >>> Chris Nagele >>> Co-founder, Wildbit >>> Beanstalk, Postmark, <a href="http://dploy.io" target="_blank">dploy.io</a> >>> >>> >>> On Sat, Apr 4, 2015 at 7:18 PM, Doug Hughes <<a href="mailto:doug@will.to">doug@will.to</a>> wrote: >>> > >>> > We have a couple of machines with all SSD pool (~6-10 Samsung 850 pro >>> > is the >>> > current favorite). They work great for IOPS. Here's my take. >>> > 1) you don't need a dedicated zil. Just let the zpool intersperse it >>> > amongst >>> > the existing zpool devices. They are plenty fast enough. >>> > 2) you don't need an L2arc for the same reason. a smaller number of >>> > dedicated devices would likely cause more of a bottleneck than serving >>> > off >>> > the existing pool devices (unless you were to put it on one of those >>> > giant >>> > RDRAM things or similar, but that adds a lot of expense) >>> > >>> > >>> > >>> > >>> > >>> > On 4/4/2015 3:07 PM, Chris Nagele wrote: >>> > >>> > We've been running a few 4U Supermicro servers using ZeusRAM for zil >>> > and >>> > SSDs for L2. The main disks are regular 1TB SAS. >>> > >>> > I'm considering moving to all SSD since the pricing has dropped so >>> > much. >>> > What things should I know or do when moving to all SSD pools? I'm >>> > assuming I >>> > don't need L2 and that I should keep the ZeusRAM. Should I only use >>> > certain >>> > types of SSDs? >>> > >>> > Thanks, >>> > Chris >>> > >>> > >>> > -- >>> > >>> > Chris Nagele >>> > Co-founder, Wildbit >>> > Beanstalk, Postmark, <a href="http://dploy.io" target="_blank">dploy.io</a> >>> > >>> > >>> > >>> > _______________________________________________ >>> > OmniOS-discuss mailing list >>> > <a href="mailto:OmniOS-discuss@lists.omniti.com">OmniOS-discuss@lists.omniti.com</a> >>> > <a href="http://lists.omniti.com/mailman/listinfo/omnios-discuss" target="_blank">http://lists.omniti.com/mailman/listinfo/omnios-discuss</a> >>> > >>> > >>> > >>> > _______________________________________________ >>> > OmniOS-discuss mailing list >>> > <a href="mailto:OmniOS-discuss@lists.omniti.com">OmniOS-discuss@lists.omniti.com</a> >>> > <a href="http://lists.omniti.com/mailman/listinfo/omnios-discuss" target="_blank">http://lists.omniti.com/mailman/listinfo/omnios-discuss</a> >>> > >>> _______________________________________________ >>> OmniOS-discuss mailing list >>> <a href="mailto:OmniOS-discuss@lists.omniti.com">OmniOS-discuss@lists.omniti.com</a> >>> <a href="http://lists.omniti.com/mailman/listinfo/omnios-discuss" target="_blank">http://lists.omniti.com/mailman/listinfo/omnios-discuss</a> >> >> >> >> >> _______________________________________________ >> OmniOS-discuss mailing list >> <a href="mailto:OmniOS-discuss@lists.omniti.com">OmniOS-discuss@lists.omniti.com</a> >> <a href="http://lists.omniti.com/mailman/listinfo/omnios-discuss" target="_blank">http://lists.omniti.com/mailman/listinfo/omnios-discuss</a> >> > > > _______________________________________________ > OmniOS-discuss mailing list > <a href="mailto:OmniOS-discuss@lists.omniti.com">OmniOS-discuss@lists.omniti.com</a> > <a href="http://lists.omniti.com/mailman/listinfo/omnios-discuss" target="_blank">http://lists.omniti.com/mailman/listinfo/omnios-discuss</a> > _______________________________________________ OmniOS-discuss mailing list <a href="mailto:OmniOS-discuss@lists.omniti.com">OmniOS-discuss@lists.omniti.com</a> <a href="http://lists.omniti.com/mailman/listinfo/omnios-discuss" target="_blank">http://lists.omniti.com/mailman/listinfo/omnios-discuss</a> </blockquote></div> </div>