08-28-2009
Hi Shockneck,
all is in the same datacentre and will be served by the same SAN infrastructure - EMC Symmetrix with Powerpath - Raid5 on the SAN site, dedicated Adapter pairs on the lpar site - no vio except for management purposes.
According to SAN Engineering no problem to make the disks all visible on each node required - even visibility on all 7 nodes is not a problem according to them.
This proposal is for one site only - we will have similar setups for UAT and COB in another datacentre in another country - with database replication between PROD and COB.
Kind regards
zxmaus
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fdmns(4) Kernel Interfaces Manual fdmns(4)
NAME
fdmns - contains file domain names and devices
DESCRIPTION
The fdmns directory ensures access to file domains by providing symbolic links to every volume in the file domain. The mkfdmn, rmvol, and
addvol utilities automatically manage the fdmns directory. Each file domain is described by its own subdirectory within the fdmns direc-
tory.
Back up the fdmns directory structure regularly using the vdump utility or any other backup utility (dump, tar, cpio). If the contents of
the fdmns directory are deleted or corrupted, restore the directory from your most recent backup tape. You must also restore the fdmns
directory after installing a new version of the operating system.
Always keep a hardcopy record of each file domain and its associated volumes in case a backup copy of the fdmns directory is unavailable.
If you have a record, you can reconstruct the fdmns directory structure. The following is a sample fdmns directory:
total 2 drwxr-x--- 2 root system 512 Nov 24 18:35 scratch/ drwxr-xr-x 2 root system 512 Nov 24 18:35 usr/
./scratch: total 0 lrwxr-x--- 1 root system 10 Oct 23 15:13 dsk10c@ -> /dev/disk/dsk10c lrwxr-x--- 1 root system 10
Oct 24 11:33 dsk11c@ -> /dev/disk/dsk11c lrwxr-x--- 1 root system 9 Oct 13 18:29 dsk8c@ -> /dev/disk/dsk8c
./usr: total 0 lrwxr-x--- 1 root system 9 Oct 24 10:52 dsk2g@ -> /dev/disk/dsk2c lrwxr-x--- 1 root system 9 Nov 24
10:35 dsk9c@ -> /dev/disk/dsk9c
RESTRICTIONS
Do not remove or modify the contents of this directory. If the fdmns file becomes corrupted, you can no longer access (or mount) any file-
set in the file domains.
SEE ALSO
advfs(4), vdump(8), mkfdmn(8), vrestore(8), showfdmn(8)
fdmns(4)