And no expander !!!! ;- ))) I use 3 IBM SAS1015 flashed to IT, the only quality SAS controller with afordable price that I can find here in Brasil .
Fábio Rabelo 2015-04-07 11:38 GMT-03:00 Chris Nagele <nag...@wildbit.com>: > 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 >
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