Date: Thu, 07 Aug 2008 14:47:50 -0400 From: Adam McDougall <mcdouga9@egr.msu.edu> To: Wes Morgan <morganw@chemikals.org> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS Advice Message-ID: <489B4356.8060702@egr.msu.edu> In-Reply-To: <alpine.BSF.1.10.0808071045380.63775@ibyngvyr.purzvxnyf.bet> References: <alpine.BSF.1.10.0808051842550.93088@ibyngvyr.purzvxnyf.bet> <18585.3903.895425.122613@almost.alerce.com> <200808061928.37001.peter.schuller@infidyne.com> <alpine.BSF.1.10.0808061400590.25442@ibyngvyr.purzvxnyf.bet> <489A2E1F.6000405@egr.msu.edu> <alpine.BSF.1.10.0808071045380.63775@ibyngvyr.purzvxnyf.bet>
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Wes Morgan wrote: > On Wed, 6 Aug 2008, Adam McDougall wrote: > >> Wes Morgan wrote: >>> >>> http://www.lsi.com/storage_home/products_home/standard_product_ics/sas_ics/lsisas1068e/index.html >>> >>> Not much onboard ram, but it's PCI-E and even SAS. CDW lists it for >>> $155. That would be cheaper than buying a new board with a PCI-X >>> slot or two, and would even handle SAS drives. Claims to be based on >>> the "LSISAS 1068E SAS controller". Any idea if that is supported? I >>> don't see it listed in the mfi man page. LSI has a Linux driver for >>> download. That card looks like it would be just what I need. >>> _______________________________________________ >>> >> mpt2@pci0:8:0:0: class=0x010000 card=0x31501000 >> chip=0x00581000 rev=0x04 hdr=0x00 >> vendor = 'LSI Logic (Was: Symbios Logic, NCR)' >> device = 'SAS 3000 series, 8-port with 1068E -StorPort' >> class = mass storage >> subclass = SCSI >> mpt2: <LSILogic SAS/SATA Adapter> port 0xa800-0xa8ff mem >> 0xfcbfc000-0xfcbfffff,0xfcbe0000-0xfcbeffff irq 17 at device 0.0 on pci8 >> >> da1 at mpt2 bus 0 target 0 lun 0 >> da1: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device >> da1: 300.000MB/s transfers >> da1: Command Queueing Enabled >> da1: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C) >> > > Excellent! How is your experience with the performance and reliability > of the card? > The system is in production right now with a smallish amount of load, so the quick test I did to see 85MB/sec write to a raidz1 and 60M/sec read is probably a bit unfair. Each set of 4 disks is attached to a SAS expander which is attached to the card internally in a sun x4150. I didn't try to tune it for performance before I started using that volume for storage in a manner where size and realiability were more important than speed. But on a whole it seems reliable. I won't have any time soon to get it into a better state for testing, but I may test the new ZFS patches on it before that. I've been pretty happy with all other MPT family chips so I would doubt it has any crippling speed problems.
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