what's 'enterprise' means? 2011/2/16 Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>: > Keld Jørn Simonsen put forth on 2/16/2011 6:00 PM: >> On Wed, Feb 16, 2011 at 05:32:58PM -0600, Stan Hoeppner wrote: >>> David Brown put forth on 2/15/2011 7:39 AM: >>> >>> RAID level space/cost efficiency from a TCO standpoint is largely irrelevant >>> today due to the low price of mech drives. Using the SATABeast as an example, >>> the cost per TB of a 20TB RAID 10 is roughly $1600/TB and a 20TB RAID 6 is about >>> $1200/TB. Given all the advantages of RAID 10 over RAID 6 the 33% premium is >>> more than worth it. >> >> I assume that you with 20 TB mean the payload space in both places, that >> is for the Linux MD RAID10 you actually have 40 TB of raw disk space. >> With the Linux MD raid10 solution you furthermore can enjoy an almost >> double up of the IO reading speed, involving 20 * 2 TB spindles compared >> to 12 * 2 TB spindles. > > Enterprise solutions don't use Linux mdraid. The RAID function is built into > the SAN controller. My TCO figures were based on a single controller SATABeast, > 42x1TB drives in the RAID 10, and 24x1TB drives in the RAID 6, each > configuration including two spares. > > -- > Stan > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Roberto Spadim Spadim Technology / SPAEmpresarial -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
