Installation guide

replacement procedure. This replacement procedure will overwrite the standby
drive if the failed disk drive is configured with any level of redundancy (RAID
levels 1, 5, and 6) and its size is identical to the size of the available standby drive.
Therefore, even though a standby drive is physically connected, the system denies
access to it so no data can be accidentally lost.
Other than the standby rebuild of disk drives, which is described in the
manufacturer’s user’s guide, these controllers do not support “hot-plugging”
(adding or removing devices while the system is running).
To add or remove devices, shut down the system, add or remove the devices,
reconfigure the HBA using the vendor’s configuration utility, and
reconfigure-reboot (b-r) your system.
The driver does not support variable-length tape drives or multivolume backup or
restore for tape drives connected to the controller.
Due to Mylex firmware limitations, SCSI devices such as tape and CD-ROM will
not function reliably when attached on a channel with SCSI hard drives. Also, a
tape block size greater than 32 Kbytes cannot be used. To be certain of correct SCSI
device operation, use SCSI devices only on an otherwise unused channel, and with
a fixed block size of 32 Kbytes or less.
Long tape commands (erasing a large tape) may fail because the Mylex controllers
have a one-hour timeout maximum for the command.
Enable tag queuing only for SCSI disk drives that are officially tested and
approved by Mylex Corporation for the DAC960 controller family and by IBM for
the DMC960. Otherwise, disable tag queuing to avoid problems.
(1212018) The command mt erase works but may report the following error
message when it gets to the end of the tape:
/dev/rmt/0 erase failed: I/O error
This message can be ignored.
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Information Library for Solaris 2.6 (Intel Platform Edition) ♦ August 1997