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, dploy.io On Mon, Apr 6, 2015 at 10:04 AM, Schweiss, Chip <c...@innovates.com> wrote: > > On Mon, Apr 6, 2015 at 8:53 AM, Fábio Rabelo <fa...@fabiorabelo.wiki.br> > wrote: >> >> Sorry, forget to forward to the list ... >> >> >> ---------- Forwarded message ---------- >> From: Fábio Rabelo <fa...@fabiorabelo.wiki.br> >> Date: 2015-04-06 10:51 GMT-03:00 >> Subject: Re: [OmniOS-discuss] All SSD pool advice >> To: Chris Nagele <nag...@wildbit.com> >> >> >> I never get my hands at that 4U model ... >> >> I have 2 of this babys in a customer of mine : >> >> http://www.supermicro.com/products/chassis/2U/216/SC216BA-R1K28LP.cfm >> >> 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 <nag...@wildbit.com>: >> >>> Thanks everyone. Regarding the expanders, our 4U servers are on the >>> following chassis: >>> >>> http://www.supermicro.com/products/chassis/4U/846/SC846E16-R1200.cfm >>> >>> 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, dploy.io >>> >>> >>> On Sat, Apr 4, 2015 at 7:18 PM, Doug Hughes <d...@will.to> 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, dploy.io >>> > >>> > >>> > >>> > _______________________________________________ >>> > OmniOS-discuss mailing list >>> > OmniOS-discuss@lists.omniti.com >>> > http://lists.omniti.com/mailman/listinfo/omnios-discuss >>> > >>> > >>> > >>> > _______________________________________________ >>> > OmniOS-discuss mailing list >>> > OmniOS-discuss@lists.omniti.com >>> > http://lists.omniti.com/mailman/listinfo/omnios-discuss >>> > >>> _______________________________________________ >>> OmniOS-discuss mailing list >>> OmniOS-discuss@lists.omniti.com >>> http://lists.omniti.com/mailman/listinfo/omnios-discuss >> >> >> >> >> _______________________________________________ >> OmniOS-discuss mailing list >> OmniOS-discuss@lists.omniti.com >> http://lists.omniti.com/mailman/listinfo/omnios-discuss >> > > > _______________________________________________ > OmniOS-discuss mailing list > OmniOS-discuss@lists.omniti.com > http://lists.omniti.com/mailman/listinfo/omnios-discuss > _______________________________________________ OmniOS-discuss mailing list OmniOS-discuss@lists.omniti.com http://lists.omniti.com/mailman/listinfo/omnios-discuss