nice, copies (mirrors) if you lose 2 mirros in a 2 mirrors raid, you lost you information so 2 mirrors fail >= 2 disk fail you have a probability to fail of 1/2 (50%, 1 failed mirror, 2 total mirrors) if you have a bigger and bigger and bigger disk configuration and only two mirrors you still with 50% if you put more mirrors: 1/3 (33%, 1 failed, 3 total), 1/4=25%, 1/5=20% ...... got? is this information on wikipedia? maybe we could put there (raid0/raid1/raid10) fail system: 1 disk failed = 1 mirror failed 2 disk failed on same mirror = 1 mirror failed probability to crash: (failed mirrors / total mirrors)!=(failed disks / total disks)!=(failed disks / total mirrors)!=(failed mirrors / total disks) 2011/1/31 Phillip Susi <psusi@xxxxxxxxxx>: > On 1/31/2011 2:41 PM, Roberto Spadim wrote: >> nice, >> linux raid1 allow many mirrors >> does raid10 allow many mirrors or just one? > > See the man page. You can specify any number for near, far, or offset > copies. The default is 2 near. > -- > 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
