Martin A. Fink wrote: > I have to store big amounts of data coming from 2 digital cameras to disk. > Thus I have to write blocks of around 1 MB at 30 to 50 frames per second for > a long period of time. So it is important for me that the harddisk drive is > reliable in the sense of "if it is capable of 50 MB/s then it should operate > at this speed. Constantly."
The good old handful of suggestions: - Use a dedicated disc for the task. - Use an empty disc so there is no fragmentation. - Buy a bigger disk, they have high bandwidths. - Buy a more "specialized" disc. for e.x.: Western Digital Raptor X(*) a 150GB, 10-KRPM S-ATA disc. - Buy several discs and use RAID 0 or alternate between discs when writing. - use XFS. AFAIK XFS has about the best "large file" and "high bandwidth" characteristics. - that with XFS you can preallocate the files doesn't seem relevant in this case. It's more for the case that you write several files simultaneously over a longer period of time. - Write to one large file and separate the individual files later. if you are sure that you don't get a power-failure: - Disable Write-Barriers, especially on a logging-filesystem. - Enable write-caching. (hdparm doesn't appear to be able to do that with a SATA-disc, but blktool appears to be able to) The later has a good chance of corrupting your filesystem when you do get a power-failure!!! *: I don't think you want something from the server-line, SCSI/FibreChannel/...? IIRC i read a something about the first 100MB/s disc with in the 15-KRPM league. Bis denn -- Real Programmers consider "what you see is what you get" to be just as bad a concept in Text Editors as it is in women. No, the Real Programmer wants a "you asked for it, you got it" text editor -- complicated, cryptic, powerful, unforgiving, dangerous. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
