Date: Tue, 1 Apr 2008 11:06:35 -0700 From: "Martin Fouts" <mfouts@danger.com> To: "Matthew Dillon" <dillon@apollo.backplane.com> Cc: freebsd-arch@freebsd.org Subject: RE: Flash disks and FFS layout heuristics Message-ID: <B95CEC1093787C4DB3655EF330984818051D19@EXCHANGE.danger.com> In-Reply-To: <200804011748.m31HmE1h039800@apollo.backplane.com> References: <20080330231544.A96475@localhost> <200803310135.m2V1ZpiN018354@apollo.backplane.com> <B95CEC1093787C4DB3655EF330984818051D03@EXCHANGE.danger.com> <200803312125.29325.qpadla@gmail.com> <200803311915.m2VJFSoR027593@apollo.backplane.com> <B95CEC1093787C4DB3655EF330984818051D09@EXCHANGE.danger.com> <200803312219.m2VMJlkT029240@apollo.backplane.com> <B95CEC1093787C4DB3655EF330984818051D0F@EXCHANGE.danger.com> <200804011748.m31HmE1h039800@apollo.backplane.com>
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If you've asked, I've missed the question. We tend to size ram and embedded NAND the same. The latest numbers I can discuss are several years old and were 64mb/64mb. Engineering *always* wants more of each, but the BOM rules. =20 > -----Original Message----- > From: Matthew Dillon [mailto:dillon@apollo.backplane.com]=20 > Sent: Tuesday, April 01, 2008 10:48 AM > To: Martin Fouts > Cc: freebsd-arch@freebsd.org > Subject: RE: Flash disks and FFS layout heuristics >=20 > : > :> -----Original Message----- > :> From: Matthew Dillon [mailto:dillon@apollo.backplane.com]=3D20 > :> Sent: Monday, March 31, 2008 3:20 PM > :>=3D20 > :> For flash storage systems competitive with hard drive storage,=3D20 > : > :In embedded systems, it's RAM that flash storage competes=20 > with, not hard > : > :drive storage. > : > :SSD is a completely different engineering problem. >=20 > You know, I think I've asked this already and you don't=20 > have to answer > it if you don't want to, but exactly how large a flash=20 > device are you > working with in your embedded project(s)? >=20 > -Matt >=20 >=20
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