DOMANDA RAID 1 vs Backup

Riki12

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ed io ti chiedo: lo hai letto quel link o ti sei limitato a girarcelo?
Perche se lo avessi letto dicono esattamente quello che ti abbiamo detto:

The two serve different purposes.​

RAID is designed to protect against disk failures and can prevent service interruption, but cannot protect against data loss due to other causes.
Backups protect against data loss from a broad range of events but restoring generally involves downtime.

RAID does not protect you against the same things that a backup does.
Si l’ho letto (di solito prima di linkare le leggo le cose) e dice sia quello che dite (che è tutto giustissimo), sia una cosa aggiuntiva che stavo cercando di capire e ora l’ho capita leggendo questo link. Subito sotto la parte che hai citato c’è scritto questo:

  • The point of RAID 1 (or any redundant disk array other than RAID 0) is to keep the system up and running even while a disk(s) has failed—the failed disk(s) can be replaced and the array rebuilt without taking down the system. This is necessary in mission-critical applications where any interruption is potentially very disruptive, and backups do take time to restore. In addition, because backups are usually taken at regular intervals, restoring from a backup generally involves loss of data since the last backup was taken; RAID can prevent this from happening due to a disk failure.
  • It is important to remember that RAID by itself is not a backup—it merely prevents data loss and interruption of system operation due to a disk failure, and cannot protect against data loss due to any other cause. Data deletion or corruption due to human or software error or malicious activity will simply propagate across the drives in the array.

che è esattamente quello che dico.
 
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Riki12

Utente Attivo
155
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CPU
i5 10400
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Raijintek OP105246 / 0R100009 AIDOS
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AsRock H470 Phantom Gaming 4
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Samsung MZ-7KE256BW SSD 850 PRO
RAM
HyperX Predator 2x8 2666 DDR4 CL13 XMP
Monitor
GeForce GT 1030
RAID non è un backup.
Più chiaro di così.
Non c'è altro da aggiungere
Non ho mai detto che il RAID sostituisce il backup. Purtroppo io sto parlando di una cosa aggiuntiva che offre il RAID oltre alla continuità.

In addition, because backups are usually taken at regular intervals, restoring from a backup generally involves loss of data since the last backup was taken; RAID can prevent this from happening due to a disk failure.
It is important to remember that RAID by itself is not a backup—it merely prevents data loss and interruption of system operation due to a disk failure, and cannot protect against data loss due to any other cause.
 
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