Date: Tue, 20 Apr 2010 19:32:10 -0700 From: Matthew Jacob <mj@feral.com> To: freebsd-fs@freebsd.org Subject: Re: MM-5425CN nand SSD Message-ID: <4BCE63AA.3030706@feral.com> In-Reply-To: <4BCE6B95.3010409@fuujingroup.com>
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On 4/20/2010 8:05 PM, Erich Jenkins, Fuujin Group Ltd wrote: > Posted this to the SCSI list about a week ago, but with no responses, > I suspect it should have been posted here. Sorry for cross-posting: (Hi, Erich!) > > Not sure if the NAND drivers being written at > http://wiki.freebsd.org/NAND apply to this device or not. It appears > this is more of a simulator at the moment and an experimental > framework. Is there any current support for the MM-5425CN series NAND > flash cards in FreeBSD? These seem like they'd be excellent for a > separate ZIL in a ZFS raidz config if installed in pairs for mirroring... > > Here's the pciconf probe of the device in question: > > none3@pci0:6:2:0: class=0x058000 card=0x00000000 chip=0x54251332 > rev=0x06 hdr=0x00 > vendor = 'Micro Memory' > device = 'MM-5425CN PCI 64/66 Memory Module with Battery Backup' > class = memory > > > This looks like the old MMI card- not NAND. It's ECC ram with a battery. It won't fit into PCI-X slots- it predates it. It has a linux driver for it. DataDomain used it in there 200 series model. NetApp used it a while back too. It has a history going back to SBus PrestoServe. I don't believe anyone has ever done a FreeBSD driver. MMI got eaten up by Curtiss Wright a year or so ago. I actually have one, but considering that the connectivity to such a card, no matter how nice, isn't worth it. I don't believe they're being built any more. Insofar as NAND drivers, you might check with the PowerPC FreeBSD port people- they've just done a bunch of changes and look like they're supporting some of the embedded stuff, which means they'll have that entire wad of NAND and NOR based device support at their fingers.home | help
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