Am 2008-02-27 21:10:03, schrieb Anders Breindahl: > For example, Lenovo's new X300 laptop is equipped solely with a SSD for > nonvolatile storage. Apparently they consider SSD's to be mature enough > for $HOME, as you put it. The eeePC has an SSD too... > Also, that link shows some interesting wear statistics. I'm reading that > with below-industry-standard wear levelling of 50%, one could > continuously shred the drive of an Eee pc for 2 to 13 years before cells > would fail. And that's for 10^5 write cycle drives. The Wikipedia > article mentions that 10^6 up to 5*10^6 write cycle drives exist. > > I.e., other factors omitted, you could continuously push data onto such > a 4GB 10^6 high-endurance drive at 50% levelling at 10MB/s for > > 4*10^9/10^7*10^6 * 0.5 / (3600*24*365.2524) = 6.3 years If I write 1 MByte per second linear on a SDD like then I will never reach to kill the SDD. The problem are logfiles, the TMP directory, mailspool, /var/lib/postgres and such. EVEN my HOME is heavily used since I compile stuff in it. > Or taking advantage of the capacity for wear levelling, a 64GB of Eee PC > quality (matching the X300's, assumably): > > 64*10^9/10^7*10^5 * 0.5 / (3600*24*365.2524) = 10.1 years It is ONLY theorie. > Why would this not suffice for server applications? Especially > considering the good random access times of SSDs, and the fact that we > will use these drives in RAIDs anyway? I have killed a new bueyd 4 GByte "SanDisk Ultra II" (27 Euro in Germany) in less then one month writing a copy of my ~/Maildir to it and the read it ober "courier-imap"... A normal 2"5 HDD (PATA) was gone in around 10 Month... so why should a SSD be longer live, if it can not beat a HDD physicaly. Thanks, Greetings and nice Day Michelle Konzack Systemadministrator Tamay Dogan Network Debian GNU/Linux Consultant -- Linux-User #280138 with the Linux Counter, http://counter.li.org/ ##################### Debian GNU/Linux Consultant ##################### Michelle Konzack Apt. 917 ICQ #328449886 +49/177/9351947 50, rue de Soultz MSN LinuxMichi +33/6/61925193 67100 Strasbourg/France IRC #Debian (irc.icq.com)
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