The XIV Host Attachment Kit
anthonyv 2000004B9K Visits (13418)
As you would expect, the IBM XIV supports a very wide range of Host Operating Systems. Even better, for most of these Operating Systems, IBM makes available (free-of-charge) a multipathing kit to install on these hosts. We call this the Host Attachment Kit, or HAK. You can find all of the available Host Attachment Kits at the IBM Support site found here. You will find HAKs for AIX, HP-UX, Linux, Solaris and Microsoft Windows.
What is important is that if the HAK is available for your Operating System, we need you to always install it on every host that attaches to IBM XIV. We ask this for the following reasons:
Here is an example of what xiv_devlist will tell you. In this example I have run it on a Windows 2008 machine, but the output is basically the same regardless of host operating system. You can see the operating system identifier (the Device as reported by the operating system, in my exam
The operating system device identifier lets you map an XIV volume from XIV to host. So in this example, I know that the Windows (C drive, which is Windows Disk 0, maps to a volume on the XIV known as W2K8X64-H02_BOOT - Exchange.
And to finish, there are several other commands that are very helpful. For instance thexiv_fc_admin -P command will tell you your WWPNs.
Another useful command is xiv_fc_admin -R because it rescans your bus. In some operating systems it is not obvious how to do this (other than reboot of course).
The nice thing is that regardless of your host operating system, the commands are the same. This is possible because they use the Python programming language. You may notice Python being installed as xpyv when you install the HAK (it is so named to ensure it doesn't interfere with any other Python installs you have).
So please install the HAK on every host that attaches to XIV. You will be making everyones life a lot easier (especially your own).
Oh and by the way, you can confirm whether your Host Operating System can be attached to the XIV by consulting the IBM System Storage Interoperation Center (or SSIC). If the HAK is not available for your Operating System, the SSIC will list other Vendor approved mult