MPATH(4) - Device Drivers Manual # MPATH(4) - Device Drivers Manual
NAME # mpath - SCSI multipath
SYNOPSIS # emc* at scsibus? hds* at scsibus? rdac* at scsibus? sym* at scsibus?
mpath0 at root
DESCRIPTION # mpath provides access, I/O multiplexing, and failover support to SCSI logical units that can have multiple physical connections to the system. It uses connections presented by path drivers, for example sym(4), as backends to a single device attached to its own scsibus(4).
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Hds,
Intro,
Ch,
Safte,
Ses,
Sd,
Uk,
Emc,
Sym,
St,
Cd,
Rdac,
Mpath,
Scsi SCSI(4) - Device Drivers Manual # SCSI(4) - Device Drivers Manual
NAME # scsi, scsibus - SCSI system
SYNOPSIS # cd* at scsibus? ch* at scsibus? safte* at scsibus? sd* at scsibus? ses* at scsibus? st* at scsibus? uk* at scsibus?
# multipath support emc* at scsibus? hds* at scsibus? rdac* at scsibus? sym* at scsibus?
DESCRIPTION # The SCSI system provides a uniform and modular system for the implementation of drivers to control various SCSI devices, and to utilize different SCSI host adapters through host adapter drivers.
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SYM(4) - Device Drivers Manual # SYM(4) - Device Drivers Manual
NAME # sym - symmetric access SCSI devices
SYNOPSIS # sym* at scsibus?
DESCRIPTION # The sym driver attaches to SCSI logical units that support symmetric access, i.e. all paths to the device are as good as each other. Each path attached to by sym is presented to mpath(4) which uses it as a backend to the logical unit attached to its own scsibus(4).
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