HP XP P9500 Storage - Manual (Page 57)

2. Complete the storage system installation and device configuration as specified in the configuration
guide for the open-system platform (for example, the HP StorageWorks XP Disk Array Configuration
Guide for HP-UX).
• Device recognition and device files. For all open-system platforms, you must verify device re-
cognition and device file creation for all Data Exchange volumes.
• File system/volume group. Do not create a file system or volume group on any Data Exchange
volume, including the OPEN-x devices that will be formatted for FXoto operations. Data Ex-
change volumes can only be accessed as raw devices by the open-system host using Data
Exchange (no mount operation).
• Defining RAW Devices. The OPEN-x volumes that are to be used as intermediate volumes and
shared between open-systems must be defined as raw devices from each host server. From
the open systems, there is no way to distinguish OPEN-x open-system dedicated volumes from
Data Exchange volumes. Make sure not to confuse the usage on those volumes in the host
systems.
• The operations below that create file systems on the intermediate volumes must not be
executed. Otherwise, information on the volume may be destroyed and the volumes will
become unusable as Data Exchange volumes.
• Solaris: newfs command
• HP-UX: pvcreate command
• IBM AIX: creating a volume group
• Windows: formatting and creating a file system
• Digital UNIX/HP Tru64 UNIX: newfs command
• SequeNT DYNIX/ptx: creating a file system
• NCR SVR4: creating a volume group
• Linux: raw command
NOTE:
When installing Data Exchange devices in an MSCS environment, you must write signatures
on the Data Exchange volumes before configuring MSCS.
• The MSCS server cannot connect volumes that do not have signatures.
• The volume on which a signature is written cannot be accessed from another server.
• The volume on which a signature is written cannot be shared.
• Only the mainframe and the server that wrote the signature can access the volume that
has the signature.
• I/O time-out and I/O queue depth. Make sure to set the I/O time-out and I/O queue depth
values for the Data Exchange volumes as specified in the applicable host configuration guide.
• Partition size. Make sure to specify the correct partition size for the Data Exchange volumes
as specified in the applicable host configuration guide. If the partition size for -A or -B volumes
is smaller than the mainframe volume size, the open-system host may not be able to access
data to the end of the extent of these volumes.
For Solaris, use the following partition sizes for the Data Exchange volumes, and use 2 (two)
for the number of alternate cylinders (
Table 33 on page 58):
HP StorageWorks P9000 Data Exchange User Guide 57