2014. december 22., hétfő

Windows 2012 DHCP cluster has been split - check your timeservers

This is the icon you definitely don't want to see on your DHCP console:

First, check your network connectivity with the partner server. If it has gone down previously the parner relationship should be restored automatically when it comes back.
Second, you likely have a time diff issue. Standardize your time setup on ALL your physical Windows servers (NOT just on your PDC emulator. No doubt. Trust me.) (and, therefore, time is getting ready on domain clients) with the following commands:

net stop w32time
w32tm /config /syncfromflags:manual /manualpeerlist:"1.pool.ntp.org,2.pool.ntp.org,3.pool.ntp.org,time-b.nist.gov"
w32tm /config /reliable:yes
net start w32time

No need to w32tm /resync after this. Time should be corrected immediately

2014. december 8., hétfő

Create a new virtual disk / disk group on a Dell PowerVault MD3220i

I've recently added two 1TB disks to a PowerVault MD3220i to be used as backup storage in a RAID1 mirror.

No pools, my setup here requires a new group.

Let's begin. Since I have two new hot-added disks, the software intelligent enough to recognize the situation.

Name the physical array and choose manual mode, just to be on the safe side.

RAID1, choose disks and don't forget to click on Calculate Capacity. Then, Finish.

YES we want to do it.

Capacity, name... and I map it to my host group right here and now.

We've done here. I don't want to create an other virtual disk since I've used up all my available disk space.
Wait approx. an hour till the new 1TB virtual disk gets ready.(See the green bar on the bottom?) (Time applies for 7200RPM SATA3 disks.)

The second part of this artice is here.