Skip to main content

ESS Specialist does not list the WWPN

Each Fibre Channel adapter on the nodes has a unique World Wide Number (Identified in ESS Specialist as World Wide Port Number - WWPN).


When creating a new host with ESS Specialist, select the appropriate WWPN in a scroll list. If you don't see this WWPN, ensure the following:

The link is correct. You should see the red laser light emitted by the host adapter on the fiber connected to the Storage Area Network - SAN (FC switch).

The FC adapters on the nodes and the ESS have the proper link type value of point-to-point or arbitrated loop. If you are unsure about your network topology, leave the default, which is arbitrated loop.

The command cfgmgr -vsl fcs0 has been run on the nodes.

Comments

Post a Comment

Popular posts from this blog

ipsec tunnel pfSense and Centos

pfSense 1.2.3 -------- external ip: 1.1.1.1 internal ip: 172.20.1.20 internal network: 172.20.1.0/24 Centos 5.5 -------- external ip: 2.2.2.2 internal ip: 172.20.2.1 internal network: 172.20.2.0/24 pfSense config from a reset. Firewall rule to allow all ipsec communication (all protocols). pfSense ipsec config -------------------- Mode: Tunnel Interface: WAN (I'm not sure this should be WAN, but changing it to LAN makes no difference) Local subnet: 172.20.1.0/24 Remote subnet: 172.20.2.0/24 Remote gateway: 2.2.2.2 Phase 1 Negotiation mode: agressive My identifier: My IP adress Encryption algorithm: 3DES Hash algorithm: SHA1 DH key group: 2 Authentication method: Pre-shared key Pre-Shared Key: secret Phase 2 Protocol: ESP Encryption algorithms: Rijndael (AES) Hash algorithms: SHA1 PFS key group: 2   Centos ipsec config ------------------- /etc/sysconfig/network-scripts/ifcfg-ipsec0 TYPE=IPSEC ...
1 comment
Read more

VIM Faster Navigation

Sometimes even the simplest of tasks like navigating through a single file can be optimized. Vim offers several methods of navigation within a file, which can adapt to the contents of the file and how it is organized. Some of these methods are obvious, while others are more complex. Mostly, the files we are editing are well structured. If our files are text, then this structure can be in the form of paragraphs, sentences, and words, or at other times code with functions, blocks, and code lines. Vim supports jumping around the file, according to the structure in the file, and has key bindings that make it easy to go to the exact place in the file where you want to go. Moving within a text file You are working on a normal text file and in the middle of a sentence you realize that you have forgotten to make the first letter in the paragraphs uppercase. You could of course, use the arrow-keys or the h/j/k/l navigation keys to move to the beginning of the paragraph to cor...
Post a Comment
Read more

ESS Subsystem Device Driver setup

In a high availability environment, there is a special device driver, designed for ESS, named Subsystem Device Driver (SDD). This device driver allows for redundant links and load sharing for storage traffic when multiple fiber connections exist between nodes and the ESS storage subsystem. SDD comes as an AIX installable fileset, named ibm2105.rte. This has to be installed on all cluster nodes, even if not all nodes in the cluster have more than one FC adapter. In our configuration, since each node is connected to the ESS using two optical cables, each disk can be accessed via any of the two paths. When SDD is installed, a virtual path is created. This virtual path represents the same storage space, but is accessible via both fiber links. There are two versions of the SDD driver for AIX: ibmSdd_510.rte - This is suitable for non-HACMP configurations or for concurrent HACMP (HACMP/ESCRM). ibmSdd_510nchamp.rte - This has to be used in nonconcurrent HACMP environments. In our...
Post a Comment
Read more