On Tue, Aug 9, 2011 at 12:19 PM, Jeppe Øland <[email protected]> wrote: >>> I had a OCZ Vertex 1 (Indilinx) in my home PC for 2 years ... every 3 >>> months it would corrupt fatally (BIOS wouldn't even see it). >>> After 3 RMAs I got them to replace it with a Vertex 2 (Sandforce), and >>> that one is stable as a rock. >>> ... Slightly slower than the Indilinx - but who cares about that when >>> it's at the expense of stability. >> >> Interesting. Have a few 30-120 GB Vertex 1s around here. Been OK >> once OCZ got the firmware stablized and pretty stable. > > The thing with V1 is that they don't move data around on the flash cells. > In other words, if you fill the drive 90% with static data > (Windows/Applications), and then write like crazy ... the remaining > 10% + the overprovisioned area will be wearing out very quickly.
I can tell you that it definitely does move data around looking at the smart data for drives I have. The minimum erase count climbs on all drives I have even with plenty of static data. >> The Vertex 2 should be MUCH faster than the Vertex 1 - at least that's >> what all the benchmarks say. > > V2 is faster with *some* data. > The controller employs data compression - partly to give you longer > life by having to write fewer physical bytes to the flash - and partly > to get speed. > The numbers quoted are for "average" data that compresses 2:1 or even 3:1. > Use the drive for incompressible data, and the speed is actually > slower than a V1. OK, so I reviewed the benchmarks and the Vertex 2 is only slower when writing sequential random data to the drive. Which doesn't really matter for most use cases (especially pfsense) as it's random IO performance kills the Vertex 1 - with or without random data. > Just don't trust any important data to them .... either back up > religiously, or just use the SSD for the boot/applications drive, and > keep your hard-to-replace data on an HDD. > (And spend the money that a bigger SSD would have cost on lots and > lots of RAM instead). My luck with rotating drives isn't any better than with SSDs - those need to be backed up as well. Regardless of the type of drive I'm using - if the data and downtime is important - you need to use the drive in a RAID array and it needs to be backed up to separate media regularly. -Dave --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] Commercial support available - https://portal.pfsense.org
