Data Replication Manager HSG80 ACS Version 8.6-4P Release Notes

Platform-Specific Issues
18 Release Notes – Data Replication Manager HSG80 ACS Version 8.6-4P
If the verify fails, the path is not available. The path becomes available again after the
controller is booted.
Component failures and other real failure scenarios cause paths in Secure Path to be
correctly marked as failed.
LUNs Numbered Incorrectly
When LUNs are moved between hosts (such as during a site failover or a site
failback), it is possible that the LUNs may become “out of letter order.”
To prevent the “out of letter order” status, before booting the Windows 2000 host,
follow the steps below:
1. Make sure all LUNs are failed over to one HSG80 path. From the HSG80 CLI
prompt, issue the following command:
Restart Other_Controller
2. Use Disk Manager to assign the correct drive letter so that the disks now match the
units on the controller.
3. Once Windows 2000 sees the disks ordered properly, use Secure Path Manager to
move the units to the correct path.
Changing Host Connection Unit Offsets
If the UNIT_OFFSET of a connection is changed, the host must be rebooted to
recognize the change. The host will continue to operate using the offset that was
previously in effect until it is rebooted. For example, if a host connection has a unit
offset of zero, it will be able to access only units D0 through D7. If the offset is
changed to 8, the host will still be able to access units D0 through D7 until it is
rebooted. After reboot, it will be able to access only units D8 through D15.
Windows 2000 Plug and Play Manager Generates Numerous
Pop-up Windows
Each time a LUN is dismounted ungracefully (for example a fabric failure), Windows
2000 displays a pop-up window that warns of “Unsafe removal of device.” This
window can be cleared by simply clicking OK. The window itself is harmless, but
additional dismounts cause more pop-up windows to appear. These windows can stack
up on the desktop and consume memory to the point that the system crashes. However,
several hundred dismounts and associated pop-up messages are required before a
system crash is probable.