X-Nico

unusual facts about Disk mirroring



System Fault Tolerance

SFT II is a disk mirroring or duplexing system based on RAID 1; mirroring refers to two disk drives holding the same data, duplexing uses two data channels/controllers to connect the disks (fault tolerance on disk and optionally data channel level).

UnixWare NonStop Clusters

The disk subsystem was either accessible from multiple nodes (using a Fibre Channel SAN or dual-ported SCSI) or used cross-node mirroring in a similar fashion to DRBD.


see also