On 31/10/13 13:56, Sharuzzaman Ahmat Raslan wrote: > Hi Adam, > > The low I/O is when the machine is under load. > > Thank you for suggesting to use SSD. I have been thinking about that > as well, but currently, the storage of BackupPC is using a 1TB disk, > with about 80% utilization. > > Changing to 1TB SSD might be a little bit overkill on the customer's > budget :) > Sure, 2 x 480GB SSD in linear RAID is still relatively expensive :) though it certainly is a huge performance improvement. BTW, FYI, I get 2.5GB/s read and 1.5GB/s write performance from my RAID5...
> Maybe I should look at bcache for Linux :) > > https://lwn.net/Articles/497024/ > http://bcache.evilpiepirate.org/ > I've seen that also, but I'm not sure it is a good (stable) solution for real use (at least, I'm not prepared to use that for a server yet, your tolerance might be different). In addition, it probably won't help the backup work load, since you need to read the entire disk, and the entire disk won't fit into the cache.... Regards, Adam -- Adam Goryachev Website Managers P: +61 2 8304 0000 a...@websitemanagers.com.au F: +61 2 8304 0001 www.websitemanagers.com.au -- Adam Goryachev Website Managers www.websitemanagers.com.au ------------------------------------------------------------------------------ Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
