We implemented our SOA infrastructure on zLinux, deployed our first application, Mobile apps, with zero downtime in the debut launch in production. Workload on this platform is growing. We currently have 80+ virtual guests on zLinux, just upgraded one of the key software (BPM) seamlessly.
There are a few key benefits that you might have missed. Binary sharing is absolutely a big benefit. Two other major features/benefits that zLinux provides that open system may not yet have are: 1. HiperSocket - This significantly reduces network complexity, vulnerability and maintenance. 2. Disaster Recovery - Significantly improve RTO/RCO 3. Productivity - Server Support/FTE is high. I am willing to further discuss with you if you are interested learning about our journey. Just give me a call. Rita Shan Mainframe Infrastructure Architect O: 703-631-4325 | C: 14300 Sullyfield Circle Chantilly, VA 20151 PenFed.org -----Original Message----- From: Linux on 390 Port [mailto:[email protected]] On Behalf Of Jason Space Sent: Monday, May 04, 2015 9:53 AM To: [email protected] Subject: Slightly OT: LVMing root file system & other Linux on z best practices (or not so best)..... All, First off, my apologies if this is slightly OT, but I'm looking for some help in the way(s) that Linux on z differs from Linux on open systems. I've been scouring the IBM redbooks and whitepapers to find tid-bits of information and presenting to the powers that be. Due to recent changes in our organization there has been a shift in the "who architects/engineers/administers" the Linux on z environment. The current momentum is to have the *NIX group essentially do all of it from the provisioning to administration. Bottom line is, they want to set it up like it is on the distributed systems (autoinstall vs, cloning, overuse of lvm, r/o binaries, etc..) some which I know fails to leverage the benefits of mainframe. 1. Some of the things the open systems *NIX guys like to do is LVM everything, including root. From the Set up Linux on IBM System z for Production redbook I found the following statement: "Do not include the root file system in the LVM structure because, if for any reason the LVM fails, the operating system will not boot. " - Set up Linux on IBM System z for Production Are there other reasoning's to not do so? These are the types of things that would really be helpful. 2. No root access for z/VM system programmers to z/Linux servers. To my knowledge the s390-tools modules require root to invoke them. These tools are the essential interfaces between z/Linux and z/VM platform. 3. Sharing of Read/Only binaries. Install once / share many -- This idea of this is mainframe centric and is foreign idea to open systems. I guess these are the "big" ones, at least in my mind. At the end of the day, I realize that the best intentions and reasons often result in poor decisions by those that are in the position to make them. Thx, Jason ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected]<mailto:[email protected]> with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ Email transmitted across the Internet is normally not protected and may be intercepted and viewed by others. Therefore, you should refrain from sending any confidential or private information via unsecured email to PenFed. We will not ask you to send confidential information to us via email, such as your logon ID, password, account numbers, or Social Security number. We prohibit our employees from sending confidential information to you via email that is not encrypted. The recommended document submission method is FAX; a partial list of generic fax numbers can be found <https://www.penfed.org/aboutUs/contactUs.asp#fax> here<https://www.penfed.org/aboutUs/contactUs.asp#fax>.<https://www.penfed.org/aboutUs/contactUs.asp#fax> ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
