[操作疑難] multipar 不能保護成個hard disk 吧? 要用snap raid, thanks

原本有人問,

c: \data offline copy to ext HDD e.g. D:\data,

咁點保護 d:\data 呢.

有人suggest 用 multipar.

但係我今日想google 下multipar whole drive,
人地話 par2 spec 只能support 3xxxx files. [1]

呢個年代, 3萬幾個file 叫少, 根本不能滿足.


我個人認知,
能夠保護到 bit rot 的,
又唔想 copy 入去non-NTFS disk (e.g. ZFS, Btfs) 的,
得番 snap raid. [2]






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[1] https://multipar.eu/users-manual/create-window

Selected files are listed on the file-list, and the total data size and blocks are calculated. PAR 1.0 supports upto 255 files, and PAR 2.0 supports upto 32768 files. It is recomended to use archiver (ZIP, RAR, TAR or something) for many files. In PAR 2.0, parent folders are treated as sub-directory in filenames. Only empty folders (without files in them) are shown as folder in the file-list.

[2] http://www.snapraid.it/compare

        SnapRAID        unRAID        FlexRAID        ZFS        Btrfs        Storage Spaces
Redundancy model
Real-time computes parity at real-time like RAID, snapshot at request time, like Backup.        Snapshot        Real-time        Real-time
Snapshot        Real-time
Snapshot        Real-time
Snapshot        Real-time
Integrity
If data is validated with some kind of checksum, and which one is the default.        Yes
SpookyHash
128 bit        No        Yes
Adler32
32 bit        Yes
fletcher4
256 bit        Yes
CRC32C
32 bit        No
Fix silent errors
If silent errors are detected and fixed before they can propagate into the parity.        Yes        No [1]        No [2]        Yes [3]        Yes [3]        No
Number of failures
How many disk failures are supported? 1 is for RAID5, 2 for RAID6.        1 2 3 4 5 6        1 2        1 2 3 4 5 6+        1 2 3        1 2        1
Other failures
If more disks fail than the supported redundancy model, is it possible to recover the data in the not failed disks?        Yes        Yes        Yes        No        No        No

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