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Description: RAID 1 is usually implemented as mirroring; a drive has its data duplicated on two different drives using either a hardware RAID controller or software (generally via the operating system). If either drive fails, the other continues to function as a single drive until the failed drive is replaced.
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www.pcguide.com/ref/hdd/perf/raid/levels/singleLevel1-c...
www.pcguide.com/ref/hdd/perf/raid/levels/singleLevel1-c.html
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Standard RAID levels - Wikipedia, the free encyclopedia
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The standard RAID levels are a basic set of RAID configurations and employ striping, mirroring, or parity. The standard RAID levels can be nested for other benefits ( see Nested RAID levels for mod...
en.wikipedia.org/wiki/Standard_RAID_levels
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Complete description and an easy-to-understand diagram of RAID level 1. Advantages and disadvantages of RAID 1 are also discussed. ... Under certain circumstances, RAID 1 can sustain multiple simultaneous drive failures;
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www.acnc.com/04_01_01.html
www.acnc.com/04_01_01.html
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Help: RAID 1, Mirrored Hard Disks Explained and Defined ... RAID 1 - Mirroring - Fault Tolerance ... Definition: RAID 1 mirroring is an arrangement of hard disks that creates an exact copy (or mirror) of a set of data on two or more disks. This is useful when read performance or reliability are more important than data...
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www.bestpricecomputers.co.uk/glossary/raid-1.htm
www.bestpricecomputers.co.uk/glossary/raid-1.htm
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Common Name(s): RAID 0+1, 01, 0/1, "mirrored stripes", "mirror of stripes"; RAID 1+0, 10, 1/0, "striped mirrors", "stripe of mirrors". Labels are often used incorrectly; verify the details of the implementation if the distinction between 0+1 and 1+0 is important to you.
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www.storagereview.com/guide2000/ref/hdd/perf/raid/level...
www.storagereview.com/guide2000/ref/hdd/perf/raid/levels/multLevel01.html
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Five types of array architectures, RAID-1 through RAID-5, were defined by the Berkeley paper, each providing disk fault-tolerance and each offering different trade-offs in features and performance. ... RAID-1 RAID Level 1 provides redundancy by writing all data to two or more drives. The performance of a level 1 array...
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www.staff.uni-mainz.de/neuffer/scsi/what_is_raid.html
www.staff.uni-mainz.de/neuffer/scsi/what_is_raid.html
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The thing to note with RAID 0 is its postulation: striping data across disks is a performance boosting configuration. We'll see RAID 0 re-interpreted in a number of ways in the next few pages. But before that, we have to meet RAID 0's antithesis, RAID 1.
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arstechnica.com/paedia/r/raid-1.html
arstechnica.com/paedia/r/raid-1.html
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In RAID 0+1, you have to lose one drive from each disk set to result in the failure of the whole system. In my diagram that would be one drive from set A and one drive from set B. In RAID 1+0, you have to lose all drives in a mirror.
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aput.net/~jheiss/raid10/
aput.net/~jheiss/raid10/
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