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<blockquote data-quote="auteur" data-source="post: 1057682776" data-attributes="member: 16170"><p>οκ τοτε.. απλα ειχα καποια αρχεια που ειχαν προβλημα αλλα μπορει να ηταν θεμα αρχειου και οχι αποθηκευσης/σκληρου.</p><p></p><p>[SPOILER][3] - ZFS and Btrfs provide a bit-rot protection at the same level of SnapRAID, always checking data before using it. In this regards all the three solutions represent the state-of-the-art. </p><p>A cons of ZFS is that the default Fletcher checksum is a choice that favorites speed over quality. The same for the default CRC32C used by Btrfs. The 128 bits SpookyHash used by SnapRAID is instead the state-of-the-art in checksumming quality, without compromising in speed. </p><p>Another cons of ZFS is that it lacks a fast RAID implementation in assembler. It only has a C implementation, that is from two to four times slower than SnapRAID/Btrfs. </p><p>ZFS also uses a sub-optimal RAID-Z3 algorithm, that requires double computations than the equivalent SnapRAID's z-parity. </p><p>Instead, both SnapRAID and Btrfs use top-notch assembler implementations to compute the RAID parity, always using the best known RAID algorithm and implementation.[/SPOILER]</p><p></p><p>παντως στο εξωτερικό πολλοι με file/storage server χρησιμοποιουν SnapRAID, εδω δεν ειδα καποιον να το αναφέρει.. μαλιστα ειναι και δωρεαν..</p></blockquote><p></p>
[QUOTE="auteur, post: 1057682776, member: 16170"] οκ τοτε.. απλα ειχα καποια αρχεια που ειχαν προβλημα αλλα μπορει να ηταν θεμα αρχειου και οχι αποθηκευσης/σκληρου. [SPOILER][3] - ZFS and Btrfs provide a bit-rot protection at the same level of SnapRAID, always checking data before using it. In this regards all the three solutions represent the state-of-the-art. A cons of ZFS is that the default Fletcher checksum is a choice that favorites speed over quality. The same for the default CRC32C used by Btrfs. The 128 bits SpookyHash used by SnapRAID is instead the state-of-the-art in checksumming quality, without compromising in speed. Another cons of ZFS is that it lacks a fast RAID implementation in assembler. It only has a C implementation, that is from two to four times slower than SnapRAID/Btrfs. ZFS also uses a sub-optimal RAID-Z3 algorithm, that requires double computations than the equivalent SnapRAID's z-parity. Instead, both SnapRAID and Btrfs use top-notch assembler implementations to compute the RAID parity, always using the best known RAID algorithm and implementation.[/SPOILER] παντως στο εξωτερικό πολλοι με file/storage server χρησιμοποιουν SnapRAID, εδω δεν ειδα καποιον να το αναφέρει.. μαλιστα ειναι και δωρεαν.. [/QUOTE]
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