Re: [OpenIndiana-discuss] 10GigE vs Infiniband vs SCSI Target ...
No responses Anybody? -Original Message- From: Edward Ned Harvey (openindiana) [mailto:openindi...@nedharvey.com] Sent: Monday, November 18, 2013 7:35 AM To: 'openindiana-discuss@openindiana.org' Subject: [OpenIndiana-discuss] 10GigE vs Infiniband vs SCSI Target ... ZFS is great to manage backend storage in a SAN environment. So then you're likely to use 10GigE, or Infiniband as the transport... I only recently discovered SAS SFF-8088. Gives you 4x 6Gbit buses yielding 24 Gbit with very low overhead, low cost. A lot of performance for the buck. I also recently discovered Linux has something called SCST, a driver of sorts, that turns some linux HBA into a scsi target. Does openindiana have something similar? It would sure beat the pants off 10GigE, and while Infiniband would still be faster, it would be very useful to do the scsi target thing for smaller systems... ___ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss ___ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
Re: [OpenIndiana-discuss] 10GigE vs Infiniband vs SCSI Target ...
Sorry, been meaning to respond, but then it slipped my mind. SAS is a viable COMSTAR target and there even was a SAS target driver for some LSI 1068-based chips in the old 2009-era OpenSolaris days, but ultimately that didn't lead anywhere and it fell by the wayside. But I understand your rationale. SAS is switched, it is multi-host, very low latency, high throughput and cheap, cheap, cheap. However, nobody appears to be working on a SAS target driver ATM, as far as I can tell. -- Saso On 11/20/13, 2:11 PM, Edward Ned Harvey (openindiana) wrote: No responses Anybody? -Original Message- From: Edward Ned Harvey (openindiana) [mailto:openindi...@nedharvey.com] Sent: Monday, November 18, 2013 7:35 AM To: 'openindiana-discuss@openindiana.org' Subject: [OpenIndiana-discuss] 10GigE vs Infiniband vs SCSI Target ... ZFS is great to manage backend storage in a SAN environment. So then you're likely to use 10GigE, or Infiniband as the transport... I only recently discovered SAS SFF-8088. Gives you 4x 6Gbit buses yielding 24 Gbit with very low overhead, low cost. A lot of performance for the buck. I also recently discovered Linux has something called SCST, a driver of sorts, that turns some linux HBA into a scsi target. Does openindiana have something similar? It would sure beat the pants off 10GigE, and while Infiniband would still be faster, it would be very useful to do the scsi target thing for smaller systems... ___ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss ___ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss ___ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
Re: [OpenIndiana-discuss] 10GigE vs Infiniband vs SCSI Target ...
On Nov 18, 2013, at 4:35 AM, Edward Ned Harvey (openindiana) openindi...@nedharvey.com wrote: I also recently discovered Linux has something called SCST, a driver of sorts, that turns some linux HBA into a scsi target. Does openindiana have something similar? i think the way the question was phrased about an HBA being a target threw people off. SCST looks like a implementation of COMSTAR functionality. COMSTAR lets most block level to be targets over iSCSI, FCoE, iSER (iSCSI over Infiniband), etc. iSCSI over ether pretty straight forward. There is plenty of Solaris-Solaris documentation available from Oracle. I wrote a blog about Solaris-Windows and Rockwood did one on Solaris-Mac. The Solaris derived implementation of iSER requires that the switch runs a subnet manager, which are commonly available in Infinniband switches. The Linux implementation allows for a back to back set up without a Infinniband switch. does that help? j. ___ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
Re: [OpenIndiana-discuss] 10GigE vs Infiniband vs SCSI Target ...
From: jason matthews [mailto:ja...@broken.net] does that help? Thank you, what I was looking for was: I want to connect the vmware servers to the openindiana server using SAS hardware. Beat the performance of Ether, and not as expensive (or as difficult) as Infiniband. Let the openindiana server present a zvol (or whatever) as a scsi target on the SAS bus, so as far as vmware can tell, there's just a hard disk on the other end of this SAS cable. Vmware would have no idea it was actualy a ZFS volume or anything. I think Saso answered it. there was a SAS target driver for some LSI 1068-based chips in the old 2009-era OpenSolaris days, but ultimately that didn't lead anywhere and it fell by the wayside. and nobody appears to be working on a SAS target driver ATM, as far as I can tell. ___ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
