Date: Fri, 05 Jan 1996 11:45:12 -0800 From: "Justin T. Gibbs" <gibbs@freefall.freebsd.org> To: Jaye Mathisen <mrcpu@cdsnet.net> Cc: hackers@freebsd.org Subject: Re: LUN support. Message-ID: <199601051945.LAA26831@freefall.freebsd.org> In-Reply-To: Your message of "Fri, 05 Jan 1996 11:40:04 PST." <Pine.BSF.3.91.960105113847.11047J-100000@schizo.cdsnet.net>
next in thread | previous in thread | raw e-mail | index | archive | help
> >I have a RAID box that can support multiple LUN's to appear as multiple >RAID'd disks to the host. Ie, with 10GB of disk after parity, I can make >1 LUN look like a 5GB disk, and 5 more LUN's of 1GB each. Look in sys/scsi to see how to create an entry for your device. It should work. >I'm on a 2940 with FreeBSD 2.1-stable. The 2940 fully supports multiple LUNs. You will see a large performance increate if you use tagged queuing since in the non-tagged case, the driver will only queue one transaction per target (locking out transactions based on the target-lun nexus was too constly down in the sequencer). Upgrade to the latest -stable code and define the AHC_TAGENABLE option in your kernel config file. -- Justin T. Gibbs =========================================== FreeBSD: Turning PCs into workstations ===========================================
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199601051945.LAA26831>