Hardware Release Notes
6.18 RZnn Disk Drive Considerations
6.18.2 RZ26N and RZ28M Disks: Recommended Firmware Support
V6.2-1H3
The minimum firmware revision level recommended for RZ26N and RZ28M disks
is Revision 0568.
If the latest firmware revision level is not used with these disks, multiple
problems can occur.
6.18.3 RZ26L and RZ28 Disks: Required Firmware for Multihost Use
V6.2
If you install RZ26L or RZ28 disks on a multihost SCSI bus in an OpenVMS
Cluster, the disk’s minimum firmware revision is 442.
The following sections describe a procedure that you can use to update the
firmware on some RZ26L and RZ28 drives. This procedure can only be used with
drives that are directly connected to a SCSI adapter on a host system. Drives
that are attached through an intelligent controller (such as an HSZ40 or KZPSC)
cannot be updated using this procedure. Refer to the intelligent controller’s
documentation to determine whether an alternative firmware update procedure
exists.
Important Note
Only certain RZ26L and RZ28 firmware revisions can be safely upgraded
to firmware revision level 442. Refer to Section 6.18.3.1 to determine if
your disks are capable of being upgraded to firmware revision level 442.
If your disk is capable of supporting firmware revision level 442, use the
RZTOOLS utility that is described in Section 6.18.3.2 to update the disk’s
firmware.
6.18.3.1 Firmware Revision Level 442 Requirements
Only the combinations of disk drives and firmware revision levels listed in
Table 6–4 are capable of being upgraded safely to firmware revision level 442.
Performing the update procedure on any other combination can permanently
damage the disk.
Table 6–4 Revision Level 442 Firmware Compatibility
Disk Drive Firmware Revision Disk File Name
RZ26L 440C RZ26L_442D_DEC.FUP
RZ28 441C or D41C
435 or 436
RZ28_442D_DEC2104.FUP
RZ28P4_442C_DEC.FUP
6.18.3.2 Firmware Revision Level 442 Installation Procedure
If you determine that your disk requires revision level 442 firmware and it is
capable of being upgraded safely, use the following procedure to update the
firmware. (See Table 6–4 for the file name of the disk you are upgrading.)
Hardware Release Notes 6–19
