Installation guide

2-4
Bull S.A.May 25th, 1999
1.6 DiskArray Warning
• The capacity of a disk drive bound as a hot spare must not be lower than the disk it
might replace.
• If there are outstanding writes when the SP owner is changed, a background verify
automatically starts.
• If an UNDETERMINED ERROR is reported on a SCSI adapter, check that:
– the SCSI cabling is correct,
– each SCSI bus connector is firmly latched in place,
– each SCSI–bus is terminated with the proper differential terminator.
• Before upgrading a DAS 2900 flare firmware, you should:
– make a backup of your data,
– unbind your RAID3 LUN,
– upgrade the flare,
– bind your RAID3 LUN,
– restore your data.
• Documentation Erratum: “Using DASSMGR”
(86 A2 56JX)
The designations Physical Disk Unit and Physical Unit that are displayed in the screens
of the ” Using DASSMGR to Configure and Manage a DAS” manual (86 A2 56JX) have
to be replaced respectively by Logical Disk Unit and Logical Unit .
1.7 ArrayGUIde Warning
• At least one Logical Disk Unit must be configured to enable ArrayGUIde to access
DAS. Use dassmgr and an asynchronous port to create the first Logical Disk Unit.
• If you use ATF and ArrayGUIde, you must use sp objects in the ArrayGUIde
configuration file instead of hdisks as devices to access the DAS Subsystem.
• ArrayGUIde and dassmgr differently display the disk capacities:
ArrayGUIde displays
available disk capacities, whereas dassmgr displays raw disk
capacities.