Klennet Recovery capabilities
Filesystem recovery
Klennet Recovery reconstructs directory structure and file names whenever possible for all filesystems.
Supported filesystems are:
- FAT16 and FAT32;
- exFAT;
- NTFS;
- HFS+, including zlib compression;
- APFS, including zlib compression and encryption;
-
BTRFS, including all BTRFS RAID levels with automatic disk order detection.
- ext in all variants: ext2, ext3, and ext4;
- F2FS (encryption is not supported);
- XFS versions 4 and 5.
-
ZFS.
- Supports mirrors, RAIDZ1, RAIDZ2, and RAIDZ3.
- Automatic detection of pool layout, RAID levels, and order of disks in each vdev - even if all the disk labels are damaged.
- Supports pools with 512, 4096, or 8192 bytes per sector (ashift=9, ashift=12, and ashift=13).
- Supports LZ4, LZJB, GZIP, ZLE, and ZSTD compression algorithms.
- Supports Fletcher4 (FL4), SHA256, SHA512, EdonR, Skein, and Blake3 checksums.
- Supports native ZFS encryption: 128-, 192-, and 256-bit AES-CCM and AES-GCM.
RAID
Klennet Recovery supports RAID0, RAID1, and RAID5 arrays.
Other RAID levels are not (yet) supported, except where noted otherwise.
RAID metadata
Klennet Recovery reads
-
DDF
RAID metadata format (LSI, Promise, and some other RAID controllers);
-
LDM
(Windows software RAID) metadata;
- MD-RAID (Linux software RAID) metadata;
- LVM2 (Linux software RAID) metadata including thinly provisioned volumes and snapshots;
- Synology write-back NVMe cache metadata.
Adaptec RAID metadata, albeit a derivative of DDF, is not supported.
RAID analysis
Klennet Recovery can
- Determine RAID block size. Supports block sizes between 512 bytes and 1 MB;
- Determine disk order for a RAID0;
- Determine disk order for a RAID5, including a RAID5 with one disk missing;
Disk images
Klennet Recovery can read and create the following disk image formats:
- Raw disk image (uncompressed copy of the disk content in a file);
- VHD(1)
- VHDX(1)
(1) - Only single-file VHD and VHDX are supported, but not the differencing formats (chaining multiple disk images).