FreeBSD UFS/ZFS Snapshot Management Environment
Problem The FreeBSD UFS (both UFS1 and UFS2) and ZFS filesystems provides the possibility to create snapshots of live filesystems. On UFS is already best known (and can be easily used) for allowing fsck(8) to run in the background (see rc.conf variable background_fsck) and to create consistent filesystem dumps (see dump(8) option -L). In ZFS snapshots even can be used with the zfs(8) send and rece
FreeBSD System Disk Mirroring
Problem RAID-1 (mirroring) is a popular approach to protect the system from a harddisk failure. It is either done in hardware or software. The usual hardware solution is to buy a RAID disk controller like the popular 3ware ATA RAID controllers and then not having to deal with any software incompatibilities because the system just sees one large physical disk. The software solution is less expensiv
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