Date: Tue, 23 Oct 2012 12:27:10 -0500 From: Mark Felder <feld@feld.me> To: "<freebsd-fs@freebsd.org>" <freebsd-fs@freebsd.org>, Dustin Wenz <dustinwenz@ebureau.com> Subject: Re: Imposing ZFS latency limits Message-ID: <op.wmm6rkap34t2sn@tech304> In-Reply-To: <2CB1D556-1EAF-43F9-8A24-36548C663ED8@ebureau.com> References: <6116A56E-4565-4485-887E-46E3ED231606@ebureau.com> <CABzXLYNaaKtfGf11%2Bm5td0G8kw8KT7TR-7LCHyFdxeKiw5AfxA@mail.gmail.com> <op.wl9vj0os34t2sn@tech304> <089898A4493042448C934643FD5C3887@multiplay.co.uk> <op.wmk0phab34t2sn@tech304> <2CB1D556-1EAF-43F9-8A24-36548C663ED8@ebureau.com>
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On Tue, 23 Oct 2012 10:40:16 -0500, Dustin Wenz <dustinwenz@ebureau.com> wrote: > What hypervisor are you using? Is it with a passive JBOD? VMWare ESXi and Xen accessing ZVOLs on FreeBSD shared via iSCSI (istgt). Yes, it's with a passive JBOD. The paths from the hypervisors to the HP DL380 head units to the JBODs are redundant all the way down to the disks. The SSDs for cache/log exist in the head units to not waste precious space in the JBOD chassis. ZFS basically has full control over everything those disks do.home | help
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