Raid Drive Recovery.pdf - Google Drive

http://www.harddriverecovery.org/raid-data-recovery.html

Single​ ​RAID​ ​Drive​ ​Failure​ ​vs.​ ​RAID​ ​Failure

RAID​ ​systems​ ​are​ ​not​ ​commonly​ ​known​ ​as​ ​failure-prone​ ​storage​ ​solutions.​ ​In​ ​fact,​ ​outside​ ​of​ ​the previously​ ​mentioned​ ​RAID​ ​0,​ ​the​ ​"Redundant"​ ​in​ ​RAID​ ​speaks​ ​to​ ​the​ ​automatic​ ​backup capabilities​ ​of​ ​the​ ​system,​ ​when​ ​combined​ ​with​ ​parity​ ​information. The​ ​reality​ ​is,​ ​even​ ​with​ ​RAID​ ​1,​ ​the​ ​likelihood​ ​of​ ​complete​ ​RAID​ ​hard​ ​drive​ ​failure​ ​within​ ​3 years​ ​of​ ​installation,​ ​according​ ​to​ ​recent​ ​tests,​ ​is​ ​only​ ​0.25%.​ ​This​ ​percentage​ ​may​ ​even​ ​be lower,​ ​in​ ​fact,​ ​because​ ​of​ ​the​ ​fact​ ​that​ ​the​ ​course​ ​of​ ​action​ ​upon​ ​a​ ​first​ ​RAID​ ​hard​ ​disk​ ​failure​ ​is typically​ ​to​ ​replace​ ​that​ ​disk. Typically,​ ​while​ ​a​ ​single​ ​hard​ ​drive​ ​failure​ ​merely​ ​causes​ ​degraded​ ​performance,​ ​which​ ​in percentage​ ​terms​ ​is​ ​much​ ​worse​ ​depending​ ​on​ ​the​ ​configuration​ ​(RAID​ ​10,​ ​as​ ​an​ ​example, would​ ​have​ ​far​ ​less​ ​degradation​ ​than​ ​RAID​ ​1,​ ​as​ ​it​ ​simply​ ​has​ ​more​ ​hard​ ​disks​ ​to​ ​work​ ​with). RAID​ ​Catastrophe Where​ ​RAID​ ​hard​ ​drive​ ​failure​ ​can​ ​cause​ ​catastrophic​ ​data​ ​loss​ ​is​ ​when​ ​more​ ​than​ ​one​ ​drive fails​ ​at​ ​once.​ ​This​ ​is​ ​typically​ ​quite​ ​rare,​ ​but​ ​does​ ​happen,​ ​as​ ​often​ ​larger​ ​RAID​ ​configurations such​ ​as​ ​RAID​ ​6​ ​or​ ​greater​ ​are​ ​often​ ​run​ ​with​ ​one​ ​failed​ ​hard​ ​disk​ ​for​ ​months​ ​before​ ​the​ ​original drive​ ​loss​ ​is​ ​noticed.

http://www.harddriverecovery.org/raid-data-recovery.html

RAID​ ​controller​ ​failure​ ​can​ ​also​ ​cause​ ​complete​ ​system​ ​failure,​ ​but​ ​this​ ​is​ ​quite​ ​uncommon​ ​as well.​ ​But​ ​no​ ​matter​ ​the​ ​probability​ ​of​ ​either​ ​failure,​ ​if​ ​your​ ​RAID​ ​system​ ​has​ ​encountered​ ​a failure,​ ​it​ ​is​ ​key​ ​to​ ​remember​ ​to​ ​not​ ​panic,​ ​and​ ​definitely​ ​DO​ ​NOT​ ​do​ ​anything​ ​which​ ​could compromise​ ​the​ ​data​ ​on​ ​the​ ​drives. Good​ ​RAID​ ​Repair​ ​Tools?

A​ ​RAID​ ​array,​ ​whether​ ​RAID​ ​0,​ ​10​ ​or​ ​50,​ ​is​ ​by​ ​nature​ ​a​ ​very​ ​complex​ ​storage​ ​solution.​ ​The subtleties​ ​of​ ​the​ ​format​ ​are​ ​such​ ​that​ ​it​ ​is​ ​always​ ​better​ ​to​ ​deal​ ​with​ ​a​ ​professional​ ​data​ ​recovery technician,​ ​as​ ​opposed​ ​to​ ​a​ ​boxed​ ​software​ ​solution. While​ ​even​ ​our​ ​data​ ​recovery​ ​technicians​ ​do​ ​use​ ​RAID​ ​failure​ ​diagnosis​ ​software,​ ​we​ ​never​ ​use automatic​ ​RAID​ ​repair​ ​software.​ ​In​ ​most​ ​cases,​ ​these​ ​applications​ ​are​ ​actually​ ​worse​ ​for​ ​your RAID​ ​array​ ​than​ ​doing​ ​nothing. Panic While​ ​it​ ​sounds​ ​very​ ​obvious,​ ​you’d​ ​be​ ​surprised​ ​how​ ​many​ ​RAID​ ​drive​ ​failure​ ​repairs​ ​become impossible​ ​because​ ​of​ ​this​ ​simple​ ​human​ ​emotion.​ ​No​ ​matter​ ​how​ ​skilled​ ​an​ ​IT​ ​administrator​ ​is, 99​ ​times​ ​out​ ​of​ ​100,​ ​they​ ​are​ ​unlikely​ ​to​ ​be​ ​able​ ​to​ ​fix​ ​a​ ​failed​ ​RAID​ ​array. The​ ​result​ ​can​ ​frequently​ ​be​ ​panic,​ ​and​ ​even​ ​more​ ​data​ ​loss​ ​than​ ​originally​ ​expected.​ ​Whenever​ ​a RAID​ ​array​ ​needs​ ​repairing,​ ​its​ ​best​ ​to​ ​consult​ ​a​ ​professional.​ ​Sit​ ​back,​ ​analyze​ ​the​ ​situation,​ ​but whatever​ ​you​ ​do,​ ​DO​ ​NOT​ ​attempt​ ​to​ ​initiate​ ​RAID​ ​recovery​ ​on​ ​your​ ​own. Seek​ ​Professional​ ​Advice

http://www.harddriverecovery.org/raid-data-recovery.html

Any​ ​RAID​ ​repair​ ​specialist​ ​worth​ ​his​ ​salt​ ​is​ ​likely​ ​willing​ ​to​ ​provide​ ​you​ ​with​ ​some​ ​free​ ​advice. Sometimes,​ ​merely​ ​making​ ​a​ ​call​ ​can​ ​ensure​ ​your​ ​simple​ ​RAID​ ​drive​ ​failure​ ​doesn't​ ​turn​ ​into​ ​a catastrophic​ ​raid​ ​array​ ​loss.​ ​As​ ​experts​ ​with​ ​all​ ​RAID​ ​array​ ​manufacturers,​ ​we​ ​at​ ​HDRG​ ​have seen​ ​time​ ​and​ ​time​ ​again​ ​that​ ​the​ ​worst​ ​issue​ ​in​ ​most​ ​RAID​ ​array​ ​failures​ ​is​ ​human​ ​intervention. Panic​ ​and​ ​software​ ​repair​ ​tools​ ​are​ ​the​ ​two​ ​major​ ​enemies​ ​of​ ​effective​ ​RAID​ ​restoration,​ ​and​ ​are unfortunately​ ​the​ ​first​ ​two​ ​things​ ​that​ ​IT​ ​administrators​ ​look​ ​to​ ​when​ ​a​ ​server​ ​appears​ ​to​ ​be​ ​lost. Don't​ ​be​ ​a​ ​victim​ ​of​ ​this. Contact​ ​details: Hard​ ​Drive​ ​Recovery​ ​Group Phone​ ​:​ ​1-866-341-4374 website​ ​:​ ​http://www.harddriverecovery.org/raid-data-recovery.html Google​ ​Folder: https://drive.google.com/drive/folders/0B14QGv7pBoAfM2dzTldPOUQ4QzQ?usp=sharing Related​ ​Contents: data​ ​recovery​ ​raid raid​ ​data​ ​recovery raid​ ​5​ ​data​ ​recovery data​ ​raid​ ​recovery raid​ ​6​ ​data​ ​recovery raid​ ​data​ ​recovery​ ​service raid​ ​10​ ​data​ ​recovery raid​ ​data​ ​recovery​ ​services raid​ ​1​ ​data​ ​recovery data​ ​recovery​ ​raid​ ​5 raid​ ​5​ ​data​ ​recovery​ ​software data​ ​recovery​ ​raid​ ​0 raid​ ​server​ ​data​ ​recovery raid​ ​array​ ​data​ ​recovery raid​ ​recovery​ ​services raid​ ​recovery raid​ ​5​ ​recovery raid​ ​recovery​ ​software raid​ ​file​ ​recovery qnap​ ​raid​ ​5​ ​recovery raid​ ​failure​ ​recovery nas​ ​raid​ ​recovery

http://www.harddriverecovery.org/raid-data-recovery.html

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