On Sat, Oct 23, 2010 at 12:35 PM, Jon Elson <[email protected]> wrote: > Igor Chudov wrote: >> Jon, thanks. What I like about atoms and ssds, is that they are cool >> and thus are unlikely to suffer from temperature stress. There is also >> no dependency on rotating fans. Meaning almost no dust clogging the >> PC, no bearing failure etc. >> >> Additionally for SSDs, there are no moving platters. I would use an >> Intel Mainstream MLC SSD, which I already use in a lot of places >> (algebra.com database partition, Bridgeport mill, swap on my desktop >> and MySQL databases too, and at work). >> > I tend to be VERY conservative with important stuff like disk drives, > and never go > for the latest generation of drives, but buy the later models of a > generation from > well-known manufacturers. This still doesn't avoid problems, but it > improves your > odds. If you have good long-term results with the Mainstream SSD, then that > is good info to have.
These are the real thing. The only thing to wear them out is data writes. Because they have wear leveling, it takes a lot of writing to exhaust the update ability of flash cells. A lot, here, means more than some http logs. Think about how much data do you need to write to, say, referesh the cells of the entire disk 100 times. That would be a lot. This is a somewhat big topic due to write amplification, but generally it is far more than a typical server would ever need to write. > With the ext3 fs, especially, you don't have to worry much about CPU > crashes messing > up the fs. So, the rest of the system is expendable, although you want > it to just work and > not have to mess with it. But, the contents of the disk represent a > fair bit of work, > so you don't want to lose that. yep >> Too many writes is not an issue for the application that I have in >> mind (nameserver, CVS, DHCP). Actually it is difficult to come up with >> any realistic application that would write so much that it would >> overwhelm a disk with wear leveling. >> > Depending on how much (or little) logging you have, it may be fine. My > server > actually logs a LOT of crap that I rarely look at. It can be handy for > unwinding > break-in attempts and the like, however. It is probably not a lot in terms of the ability of a SSD to absorb writes. i ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
