Friday, June 4, 2010

Cluster Disk with Identifier has a Persistent Reservation on it

If during migrating Cluster volumes from one cluster to another or if a cluster was taken down incorrectly. Those volumes would not be able to join the new cluster due to the persistent reservation flag set by cluster service. Easy way to make sure to clear the flag before migrating this volume to a new cluster is remove it from the old cluster storage first. The command below will remove the reservation.

cluster.exe node %nodename% /clear:disknumber


Wednesday, June 2, 2010

HP Procurve Switches – Internet SNTP

These are the steps used to get procurve up and using internet NTP servers. I used Chicago NTP server from NIST server’s list The Time zone is in minutes, so central is –6 * 60 minutes is –360. Being in a Daylight Savings Time(DST) area I added DST rule also. On the firmware I had the default was operating mode is broadcast. That will need to be switched to Unicast to route to an internet NTP server. Make sure your routes are setup if you require routing to NTP servers.

sntp server priority 1 3

sntp unicast

time timezone –360

time daylight-time-rule Continental-US-and-Canada

timesync sntp