Le vendredi 16 avril 2010 à 16:00 +1000, Adam Goryachev a écrit : > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Just had a thought ... dangerous I know :) > > Would it improve backuppc performance to use RAID1 with 3 drives? > Obviously writes are not improved, but it would seem the majority of > work done on the FS are random reads... > > ie, new files, and unlinks for old expiring files/backups are the only > writes (ok, plus logging). Other than that, there is a lot of reading > both for every backup as well as for the nightly prune process. > > Currently, I'm using linux software RAID1 from md, with 2 x 1TB SATAII > HDD's, but thinking that adding a third HDD might improve performance > (albeit not increasing capacity).
I'm not sure adding a 3rd drive will really improve the performances. If you really want better performances, add 2 drives, and go with a RAID10 setup. This will *really* improve both read and write (but especially reads). Regards. > > Thanks, > Adam > > - -- > Adam Goryachev > Website Managers > www.websitemanagers.com.au > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAkvH/RQACgkQGyoxogrTyiUbuQCgwfRn8f6Z/cbO1DDKoLJqzqGA > /C0AoIZ/7c+9EWPIZBZrxb860Mtr+vsH > =s2IR > -----END PGP SIGNATURE----- > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > BackupPC-users mailing list > [email protected] > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users > Wiki: http://backuppc.wiki.sourceforge.net > Project: http://backuppc.sourceforge.net/ -- Daniel Berteaud FIREWALL-SERVICES SARL. Société de Services en Logiciels Libres Technopôle Montesquieu 33650 MARTILLAC Tel : 05 56 64 15 32 Fax : 05 56 64 15 32 Mail: [email protected] Web : http://www.firewall-services.com ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
