05-12-2009
thanks for your quick answer.
Okay, that would help me have the LPAR alive.. thru the AIX O/S
how about the SAN disks ?
From my DS8000 i have created logical disks and assigned to VIO_SERVER_1
Create Virtual SCSI Adapter on VIO_SERVER_1 and LPAR_1 + LPAR_2 + LPAR_3 + LPAR_4
Allocation
VIO_SERVER_1 disk10 (From SAN) given to LPAR_1
VIO_SERVER_1 disk11 (From SAN) given to LPAR_2
VIO_SERVER_1 disk12 (From SAN) given to LPAR_3
VIO_SERVER_1 disk13 (From SAN) given to LPAR_4
Now if the Vio_server_1 goes down all those disks will disappear from LPAR_1 + LPAR_2 + LPAR_3 + LPAR_4
1) How can I make failover or redundancy for it with VIO_Server_2 (other than Mirroring)
2) Can I use Mobility under HMC to move the LPAR Partition under the same Managed system to another VIO Server (in my case VIO_SERVER_2 ? )
thanks
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LEARN ABOUT HPUX
st_san_safe
st_san_safe(5) OBSOLETED st_san_safe(5)
NAME
st_san_safe - determine whether access to tape device special files without the no-rewind-on-close option is allowed (OBSOLETED)
VALUES
Failsafe
Default
Allowed values
Recommended values
or
DESCRIPTION
Note: this tunable is obsoleted and has been renamed to beginning with release HP-UX 11i v3.
This tunable notifies the tape driver whether it should allow access to device special files without the no-rewind-on-close option. When
this tunable is on the tape driver will fail any open on a tape device special file without the no-rewind-on-close option (that is, or with
a status of
The tunable allows the safe sharing of tape devices in SAN tape backup solution configurations. The disabling of device special files
without no-rewind-on-close in a SAN tape backup solution configuration prevents the accidental sending of a rewind command on close from
HP-UX systems via standard tape commands like which would corrupt a backup in process.
Who Is Expected to Change This Tunable?
Anyone.
Restrictions on Changing
Changes to this tunable take effect immediately.
When Should the Tunable Be Turned On?
This tunable should be turned on if the system is going to be used in a SAN tape backup solution configuration.
What Are the Side Effects of Turning the Tunable On?
The tape driver will fail any open to a tape device special file that does not have the no-rewind-on-close option with a status of This
behavior prevents the usage of any tape device special file without the no-rewind-on-close option.
When Should the Tunable Be Turned Off?
This tunable should be turned off if the system is not part of a SAN tape backup solution configuration or the system utilizes will not
function unless it has access to device special files without the no-rewind-on-close option.
What Are the Side Effects of Turning the Tunable Off?
A rewind may be issued from this system accidentally on close possibly corrupting a backup being issued from another system on the SAN.
What Other Tunables Should Be Changed at the Same Time?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by Hewlett-Packard.
SEE ALSO
norewind_close_disabled(5), scsi_tape(7), scsimgr_estape(7).
Tunable Kernel Parameters st_san_safe(5)