SCSI-3 enabling for LUNs

set device 0864 attribute=scsi3_persist_reserv;

you know for sure your devices need that flag ?

symconfigure -sid XXXX -file c:\file.txt  commit  where file.txt has the following contents:  set device XXXX attribute=SCSI3_persist_reserv ;

emc200609 describes that it should not be enabled for the devices whch do not need it. Though we have not seen any customer affected by some issues if this flag is enabled but still we dont recommend enabling it for the hosts that do not need it.

regards,

Saurabh

The above "symconfigure" command sets "SCSI-3 Persistent Reserve" on a specific device?  Is that what you want?.   You only need to set 'SCSI-3 Persistent Reserve" on devices that are in certain types of Clusters, such as SUN Cluster 3.0 and above, Veritas DBE / Active cluster for Oracle 9i RAC 3.5, MSCS for W2K8 (Failover cluster), and AIX (HACMP?), etc.

Just because you're using SRDF, doesn't mean that you need SCSI-3 Persistent Reserv.

   Stuart

Hi Dynomox,

Do we need to disable scsi-3 per bit on devices , i want to allocate storage to  window 2003 cluster

I see there is hot fix available from microsoft  911030

A cluster node failover does not work when you use SCSI-3-compliant persistent reservations in Windows Server 2003 SP1

Win2k3 does not require SCSI3_persist_reserv, Win2k8 failover clustering does.

Hi

I see there is an article from Microsoft, what does it refers to.

from 5874 it's by default yes for all the devices. what happens if provision thin devices with per bit to windows 2k3.

i know windows 2k3 does not require per bit since it has it's own reservation table.

hi bollam,

check my response from Oct 2011 above for your doubt...

regards,

Saurabh