| What is a raid setup on a computer
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| | from enhancements in speed, two examples
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| system?
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| | which come to mind are game servers and
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| Like anything else it depends who you
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| | peer to peer (P2P) file or music file
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| talk to.
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| | sharing servers.
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| Raid hard drive systems had their acronym
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| | However since there is no allocation for
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| explained as "Redundant Array of
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| | error correction or redundancy RAID 0 is
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| Individual Drives "and "Redundant Array
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| | not a safe system for vital data. Data
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| of Inexpensive Drives". The acronym for
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| | will be lost on disk failure. Only use
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| this is the shortened term "RAID".
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| | RAID 0 in situations where you need the
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| Capacity, reliability and performance are
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| | extended disk capacity or performance
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| all important for file servers or other
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| | gain but not enhanced data reliability.
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| computer systems when you are storing
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| | Secondly in sequence there is RAID Level
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| large or very important files.
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| | 1.
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| It is often said that "It is not if you
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| | In the same way that RAID 0 focuses
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| hard drive will fail. It is at what point
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| | solely on storage capacity and
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| in time your hard drive will fail".
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| | performance with no concern whatsoever on
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| Of course if your hard drives fail even
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| | reliable data storage RAID 1, which us
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| if you have backup the last bit of data
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| | also called "Disk Mirroring" uses disks
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| which was being written onto the hard
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| | in pairs to save the files in a redundant
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| drive when the failure occurred will be
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| | manner.
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| lost.
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| | Several points.
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| You can get much greater capacities,
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| | One performance may be slower as it takes
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| avoid losing data from disk failure, and
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| | time for the host adapter to send the
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| do all this with the RAID (the acronym
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| | data and for the drives to write it to
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| for the system).
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| | disk,
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| RAID can now be done with standard
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| | Secondly a user may delete or damage
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| commercially available hard drives so the
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| | files which of course will be stored in
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| cost is now within your price range for
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| | that way on both drives.
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| all the benefits and peace of mind RAID
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| | Raid 1 hence offers better reliability
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| will give you.
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| | than RAID 0 or the conventional drive
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| RAID can be simply explained as putting
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| | setups but does not give full security
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| the hard drives in parallel sequence.
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| | for your data or enhanced performance.
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| The host adapter (usually called the RAID
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| | Next in sequence we have RAID Levels 2, 3
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| system controller) sits between one
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| | and 4.
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| higher stream (on the computer side) and
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| | Raid 2 adds one or more disks to hold
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| several lower rate data streams (on the
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| | error correction codes with which lost
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| hard drive side). When the computer
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| | data can be reconstructed.
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| writes to the disks , the host adapter
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| | Raid Level 3 is the same as RAID Level 2
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| takes high stream data and breaks it into
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| | but uses a simpler code the maximum
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| many synchronized streams , one for each
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| | storage capacity with Raid 3 may be
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| of the disks in process called "Striping
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| | somewhat less.
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| ". Upon reading the data the host adapter
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| | Raid Level 4 is nearly the same as RAID
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| takes the data stream from each disk
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| | LEVEL 3 but instead of "Striping " across
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| multiplexes the sets of data streams and
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| | disks is operates at a sector level, You
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| coordinates sending the resulting
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| | now have the better situation of both a
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| combined set of data onto the computer.
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| | simpler , less intensive demanding system
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| It is all a matter of redundancy which
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| | and as well as good data reliability . In
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| makes RAID such a good thing in most
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| | addition performance may be enhanced as
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| cases.
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| | large data blocks can be written faster
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| There are six different levels of RAID
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| | due to more coordinated writing to the
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| functionality depending on your
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| | drives in smaller "sector" areas.
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| requirements. - the level of data
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| | Lastly is RAID Level 5.
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| security and integrity you want as well
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| | Raid level 5 is the same as the excellent
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| as the size of hard drive space you want.
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| | RAID Level 4 except that instead of
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| First of RAID Level 0 which spreads the
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| | dedicating a single disk to storing the
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| data across multiple disks. You can get a
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| | data the data stream is striped across
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| similar effect to the RAID Level 0 by
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| | all the disks. You have greater
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| having multiple disks and using the
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| | performance with greater reliability for
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| features in Windows 2000 or its successor
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| | your computer systems.
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| Windows XP.
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| | A RAID setup may take some effort and
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| Since the data volume and rate to any
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| | training on your part.
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| specific disk is a fraction of the
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| | Base your planning for your new RAID
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| aggregate you will receive larger
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| | system on a careful analysis of your
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| capacity and better performance from a
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| | needs.
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| RAID 0 setup than from any one
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| | What is important in your situation
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| conventional disk.
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| | currently? Disk size capacities, data
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| As well data can be sourced from multiple
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| | reliability and integrity, performance or
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| drives as once. This can be most useful
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| | a combination or all.
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| in shared situations which may benefit
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