Byte sized for when a nibble just isn't enough!
Recently a colleague was attempting to configure the cluster extension protection (CLX) which is required by our Active/Active HPE 3PAR storage setup. Our Microsoft Failover Clusters are stretched over geographically separate sites and the Cluster Share Volumes (CSV) are spread over the 3PAR storage arrays in each site. We use the CLX software to manage … Read more
I recently ‘enjoyed’ working on an issue where a 3PAR remote copy group issue resulted in both virtual volumes entering a read-only state. I’ve seen a similar problem where both copies go into a read-write state which is probably more worrying when it happens. Let’s take a look at the problem, the data I had … Read more
I still remember being impressed with the design and architecture of the HPE 3PAR storage system all those years ago when going through a tender process for a replacement SAN. Over time new versions of the hardware and software have been released and again I’ve been impressed and excited to see the new possibilities. I … Read more
Well HPE Discover in London was awesome – I must have left an impression last year as various HPE reps around the event remembered me. There was so much to see and I wish I’d taken more pictures but I spent more time talking to people. Let’s take a look at some of the pictures … Read more
The SSL/TLS certificates on my HPE (Hewlett Packard Enterprise) C7000 blade chassis expired this week and therefore required replacing. I’m a strong believer in always replacing certificates with valid ones generated by a certificate authority (CA). In my mind there isn’t much excuse in a business to not have an internal CA for this sort … Read more
I came across this issue while reviewing the output of the checkhealth –detail command run from the 3PAR command line. This command provides a more detailed view (as per the switch) of any health issues including those experienced in the Logical Disk (LD) subsystem. The specific error ‘LDs not mapped to a volume’ may happen … Read more
I recently setup a DNS iApp on the F5 load balancers in my datacenters and felt it was time to migrate the Hewlett Packard Enterprise (HPE) 3PAR storage arrays DNS to point to this new virtual IP (VIP) rather than to the static DNS server it currently used. I will demonstrate the command line syntax for … Read more
I finally got round to looking at a problem which has existed in one of my datacenters for I guess a few years now. It’s really bothered me for a long time but I’ve just been tied up with other projects so it remained. I have two datacenters which are more or less identical in … Read more
I’m in the process of deploying updates to a number of VMware ESXi hosts and came across an interesting fault today. When attempting to deploy updates through VMware vCenter Update Manager (VCUM) I was greeted with the following error message – Cannot download software packages from patch source. Check the events and the Update Manager … Read more
Recently a number of servers in my estate began to flag the following error – Lost connectivity to the device mpx.vmhba32:C0:T0:L0 backing the boot filesystem /vmfs/devices/disks/mpx.vmhba32:C0:T0:L0. As a result, host configuration changes will not be saved to persistent storage. All of the servers in question run VMware ESXi 5.5 and are Hewlett Packard Enterprise (HPE) … Read more