Re: some basic questions about Z system, Zlinux....
Hi every one. I am back with another question I studied one flash based tutorial and some other web pages/pdf presentations. I should say that Flash based learning materials are far better place for new learners to start from. As There are several OSs that run on System Z, Which one is the Default OS on IBM mainframe? I mean, Does IBM sell all of them to a customer when it buys a mainframe or customer has the option to select the OS ? Another question is, Z/VM allows us to install several Linux for System Z on it and for example cluster the application server which is installed on it. so we can achieve high availability and handle heavy work load, what about Z/OS ? It has not a virtual machine, so it can run one OS at the same time. My question is, When we have websphere and DB2 as main components of a big system, which OS can be selected for them? I thought that Z/VM could be the choice as it simulate the way that we already deploy application server instances and database, but If Z/VM is correct choice, what is use of Z/OS? Thanks Ted MacNEIL wrote: It has gone from MFT to MVT to SVS to MVS to MVS/XA to MVS/ESA and now z/OS. You missed OS/390 (between MVS/ESA and z/OS). - Too busy driving to stop for gas! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Legolas Wood writes: As There are several OSs that run on System Z, Which one is the Default OS on IBM mainframe? I mean, Does IBM sell all of them to a customer when it buys a mainframe or customer has the option to select the OS ? It's entirely the mainframe owner's choice. A single mainframe can run all 5 at the same time if the owner wishes. Another question is, Z/VM allows us to install several Linux for System Z on it and for example cluster the application server which is installed on it. so we can achieve high availability and handle heavy work load, what about Z/OS ? It has not a virtual machine, so it can run one OS at the same time. First of all, just as with Linux, z/OS can also run within z/VM virtual machines. Actually, all 5 operating systems can, including z/VM itself. But bear in mind that each mainframe has first level virtualization called LPARs (logical partitions), managed by something called PR/SM. This is all part of the hardware itself and comes with every system. You can define up to 30 (System z9 BC) or up to 60 (System z9 EC) LPARs without z/VM, and PR/SM can dynamically allocate resources to each LPAR. This is how most mainframe owners run z/OS, in LPARs. So why is it more common to run z/OS in LPARs and Linux in z/VM (with z/VM in the LPAR)? Because z/OS itself has considerable virtualization capabilities. I would recommend studying the z/OS references mentioned earlier to start to get an idea about the many characteristics that make z/OS unique, including z/OS address spaces, WLM, RRS, ARM, UNIX System Services, DVIPA, Parallel Sysplex, GDPS, and much more. My question is, When we have websphere and DB2 as main components of a big system, which OS can be selected for them? WebSphere Application Server is available on the mainframe twice: both for z/OS and for Linux on z. There are versions of DB2 available for z/OS, Linux on z, z/VSE, and z/VM (4 out of the 5 supported operating systems). I thought that Z/VM could be the choice as it simulate the way that we already deploy application server instances and database, but If Z/VM is correct choice, what is use of Z/OS? There is a long list of capabilities z/OS has that Linux does not. For example, z/OS runs CICS and IMS, the world's two most popular transaction processing systems. (The other half of IMS is a very popular and important information management system.) But, in simple terms, here's the comparison: while Linux on System z offers the highest qualities of service of any Linux implementation, z/OS offers the highest qualities of service of any operating system. Qualities of service include characteristics like reliability, availability, security, disaster recovery, performance and scalability, manageability, etc. You can run both of course, and they complement each other very well. - - - - - Timothy Sipples IBM Consulting Enterprise Software Architect Specializing in Software Architectures Related to System z Based in Tokyo, Serving IBM Japan and IBM Asia-Pacific E-Mail: [EMAIL PROTECTED] -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
On Wed, 1 Aug 2007 17:59:22 -0700, legolas wood [EMAIL PROTECTED] wrote: Hi every one. I am back with another question [snip] As There are several OSs that run on System Z, Which one is the Default OS on IBM mainframe? I mean, Does IBM sell all of them to a customer when it buys a mainframe or customer has the option to select the OS ? There is no 'default' operating system installed when you purchase a zSeries system. IBM offers five OSs for this architecture: 1) z/VM, 2) z/OS, 3) Linux for zSeries, 4) z/TPF, and 5) z/VSE. You can license any (or all) of these to run on your new system, and each is designed and built to support a specific type of workload. Another question is, Z/VM allows us to install several Linux for System Z on it and for example cluster the application server which is installed on it. so we can achieve high availability and handle heavy work load, what about Z/OS ? It has not a virtual machine, so it can run one OS at the same time. Yes, using z/VM and Linux on zSeries running in multiple virtual machines, you can create high availability systems. z/OS also supports configurations that implement high availability, but it lacks the ability to run Linux based workloads at the same time. My question is, When we have websphere and DB2 as main components of a big system, which OS can be selected for them? I thought that Z/VM could be the choice as it simulate the way that we already deploy application server instances and database, but If Z/VM is correct choice, what is use of Z/OS? z/VM is the 'correct' choice if your needs include running multiple Linux for zSeries (or any other mainframe OS) simultaneously in virtual machines. z/Os is the 'correct' choice if your needs include running batch type applications or you need the functionality of IMS, CICS, or TSO. So the answer is it depends ...:-) And just because some of IBM's middleware has the same name across multiple OSs (e.g., WebShpere is available for both z/OS and Linux, DB2 is available for z/OS and z/VM) does not imply that they all support the same functionality across multiple OSs. The DB2 available for z/VM is several releases behind the DB2 available for z/OS, for example. Select your OS based on what applications you need to support; if all of your applications are supported by Linux on zSeries, then go with that and z/VM as the hipervisor; if you need to support CICS, production strength DB2 access, or IMS services, then go with z/OS. If you need to support both Linux and z/OS applciations, you can either put z/VM and its Linux guests in one LPAR and z/OS in another (with hipersockets connecting the two) or you can simply run Linux and z/OS as guests of z/VM; the choice is yours. DJ -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Legolas Wood writes: Thank you all for your really nice and descriptive answers. One more question, Does IBM provides JDK for Zlinux machines? Which other vendor do this? Yes, IBM does offer Java for Linux on System z. You can download it here: http://www.ibm.com/developerworks/java/jdk/index.html or here for the direct link (excluding preview releases/betas): http://www.ibm.com/developerworks/java/jdk/linux/download.html There are some other Java distributions for Linux on System z, although it's easily arguable IBM has the best implementation. For example, Blackdown offers a Java 1.2.2 version here: http://www.blackdown.org/java-linux/java2-status/jdk1.2-status.html There also appear to be implementations of gcj that ship in the major Linux on System z distributions. - - - - - Timothy Sipples IBM Consulting Enterprise Software Architect Specializing in Software Architectures Related to System z Based in Tokyo, Serving IBM Japan and IBM Asia-Pacific E-Mail: [EMAIL PROTECTED] -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
-Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ted MacNEIL Sent: Sunday, July 29, 2007 4:09 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: some basic questions about Z system, Zlinux Z/ VM: A virtual machine like Virtual PC It's the other way around. Virtual PC is like z/VM. The first VM came out in 1967 on IBM hardware. Also, zLINUX is not a term that IBM uses. It's LINUX for zSeries, and just happens to be another distribution that runs on a different hardware platform. - Yeah, like a Yugo is like a Bentley. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology The information contained in this e-mail message may be privileged and/or confidential. It is for intended addressee(s) only. If you are not the intended recipient, you are hereby notified that any disclosure, reproduction, distribution or other use of this communication is strictly prohibited and could, in certain circumstances, be a criminal offense. If you have received this e-mail in error, please notify the sender by reply and delete this message without copying or disclosing it. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Legolas Wood wrote: System Z: An specific operating system made by IBM for its architecture, what is its differences with the Zlinux? Current Z System version is 1.8 and Z/OS is old name of this operating system. John Giltner wrote: SystemZ is the current IBM mainframe hardware architecture, not a OS. z/OS is one of the OS's that can run on SystemZ comptuers. Also, z/OS is the current evolution of the original IBM operating system that came out in the 1960s. It has gone from MFT to MVT to SVS to MVS to MVS/XA to MVS/ESA and now z/OS. Over the years it has continued to improve and keep up with the times. * If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. * -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Tom, Don't forget the ten releases of OS/390. Bob Richards -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Kelman, Tom Sent: Monday, July 30, 2007 11:22 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: some basic questions about Z system, Zlinux Also, z/OS is the current evolution of the original IBM operating system that came out in the 1960s. It has gone from MFT to MVT to SVS to MVS to MVS/XA to MVS/ESA and now z/OS. Over the years it has continued to improve and keep up with the times. LEGAL DISCLAIMER The information transmitted is intended solely for the individual or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you have received this email in error please contact the sender and delete the material from any computer. SunTrust and Seeing beyond money are federally registered service marks of SunTrust Banks, Inc. [ST:XCL] -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
It has gone from MFT to MVT to SVS to MVS to MVS/XA to MVS/ESA and now z/OS. You missed OS/390 (between MVS/ESA and z/OS). - Too busy driving to stop for gas! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Oops. I guess I also missed the very first one - OS/360. Tom Kelman Commerce Bank of Kansas City (816) 760-7632 -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ted MacNEIL Sent: Monday, July 30, 2007 11:58 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: some basic questions about Z system, Zlinux It has gone from MFT to MVT to SVS to MVS to MVS/XA to MVS/ESA and now z/OS. You missed OS/390 (between MVS/ESA and z/OS). - Too busy driving to stop for gas! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html * If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. * -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Thank you all for your really nice and descriptive answers. One more question, Does IBM provides JDK for Zlinux machines? Which other vendor do this? Thanks -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
some basic questions about Z system, Zlinux....
Hi every one. I am just confused with all of these terms, please let me know whether i am right about them or not. Zlinux : A linux which is compiled for Z Architecture, whether 31 bit or 64 bit. like Slack, Suse or centOS System Z: An specific operating system made by IBM for its architecture, what is its differences with the Zlinux? Current Z System version is 1.8 and Z/OS is old name of this operating system. Z/ VM: A virtual machine like Virtual PC, that can be installed into Z System and then we can install guest OSs ( What kind of OS can be quest, does an ordinary linux can be quest or we will need specific linux versions, can we install windows?) current Z/ VM version is 5 S390 : It is name of hardware, and these hardware can have a Z system installed on it. Is there any book which could give me overall knowledge about these OSs and names and what they generally do? Thanks -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
legolas wood wrote: Hi every one. I am just confused with all of these terms, please let me know whether i am right about them or not. Zlinux : A linux which is compiled for Z Architecture, whether 31 bit or 64 bit. like Slack, Suse or centOS You are correct, but in my opinion is a bad term. You don't hear, at least I don't, people refering to pLinux (PowerPC), or iLinux (Intel), aLinux (AMD) sLinux (Sparc), or any other letter Linux to indicate they are running a Linux that is compiled for a specific CPU platform. System Z: An specific operating system made by IBM for its architecture, what is its differences with the Zlinux? Current Z System version is 1.8 and Z/OS is old name of this operating system. SystemZ is the current IBM mainframe hardware architecture, not a OS. z/OS is one of the OS's that can run on SystemZ comptuers. Z/ VM: A virtual machine like Virtual PC, that can be installed into Z System and then we can install guest OSs ( What kind of OS can be quest, does an ordinary linux can be quest or we will need specific linux versions, can we install windows?) current Z/ VM version is 5 z/VM is a full OS that does machine virtualzation, same theory as Virtual PC, but Virtual PC is software that must be installed on top of an existing OS. S390 : It is name of hardware, and these hardware can have a Z system installed on it. S390 is the older mainframe hardware architecture. Is there any book which could give me overall knowledge about these OSs and names and what they generally do? Thanks Here is a link for basics of z/OS http://www.redbooks.ibm.com/abstracts/sg246366.html Technical over view of z9: http://www.redbooks.ibm.com/Redbooks.nsf/RedbookAbstracts/sg247124.html?Open Link for various other Redbook in the SystemZ world. http://www.redbooks.ibm.com/portals/systemz -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Z/ VM: A virtual machine like Virtual PC It's the other way around. Virtual PC is like z/VM. The first VM came out in 1967 on IBM hardware. Also, zLINUX is not a term that IBM uses. It's LINUX for zSeries, and just happens to be another distribution that runs on a different hardware platform. - Too busy driving to stop for gas! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: some basic questions about Z system, Zlinux....
Legolas Wood writes: Zlinux : A linux which is compiled for Z Architecture, whether 31 bit or 64 bit. like Slack, Suse or centOS No, Slackware, Novell SuSE, and CentOS are Linux distributions. All three of those distributions are available for System z. The preferred generic term for Linux running on these systems is Linux on System z. System Z: An specific operating system made by IBM for its architecture, what is its differences with the Zlinux? System z refers to the whole family of modern IBM mainframes. It's a brand for this type of business server. The latest models are System z9, and there are two: System z9 Enterprise Class (System z9 EC) and System z9 Business Class (System z9 BC). You will sometimes see IBM model numbers listed. The z9 EC is 2094-xxx and the z9 BC is 2096-xxx. The xxx part refers to the submodel code. The submodel code can be a specific hardware configuration or processor capacity setting. For example, a 2094-S18 is a System z9 Enterprise Class which contains two processor books. However, you can also configure a 2094-S18 to run as any of several software capacity settings, e.g. 2094-401. A 2094-401 is a System z9 EC running at the lowest capacity setting (a single general purpose processor running at the lowest speed). Software capacity settings relate to most, but not all, of the System z's five operating systems. Current Z System version is 1.8 and Z/OS is old name of this operating system. z/OS is the current name for one of the five IBM supported operating systems for the System z mainframes -- it's the flagship operating system, in fact. The other OSes are z/VM, z/VSE, z/TPF, and, as mentioned, Linux. Z/ VM: A virtual machine like Virtual PC, that can be installed into Z System and then we can install guest OSs ( What kind of OS can be quest, does an ordinary linux can be quest or we will need specific linux versions, can we install windows?) current Z/ VM version is 5 Pretty close, although as another person pointed out z/VM started many, many years ago -- before I was born -- and has enjoyed constant refinement ever since. So it is much more sophisticated than relative newcomers like Virtual PC. Any (or all) of the five operating systems can be z/VM guests, including z/VM itself. Yes, z/VM is both an operating system and a hypervisor (virtual machine host). The traditional operating system part of z/VM is known as CMS. Yes, you can run z/VM inside z/VM, many instances deep if you wish. Linux is one of the most popular guests to run inside z/VM, and, although it is not strictly required to run Linux on System z, there are many advantages to running Linux that way so most people do. S390 : It is name of hardware, and these hardware can have a Z system installed on it. S390, or System/390, is the old name for IBM mainframes back before they supported 64-bit memory addressing. You will still see that name from time to time. For example, if you look at the Linux source code at kernel.org you will see references to s390 and s390x. The s390 parts of the source code refer to 31-bit Linux, and the s390x source code tree refers to 64-bit (known as z/Architecture). Is there any book which could give me overall knowledge about these OSs and names and what they generally do? Yes, there are many places you can look. A good place to start is here: http://www.ibm.com/university/systemz Look for some videos on the right side of the page that you can watch. They contain some basic introductory information to get you started. If you want to learn more about the inside of z/OS and how it works, you can start here: http://www.redbooks.ibm.com/abstracts/sg246981.html There's also a very good set of IBM publications for z/OS basic skills. Visit here: http://publib.boulder.ibm.com/infocenter/zoslnctr/v1r7/index.jsp?topic=/com.ibm.zconcepts.doc/zconcepts_8.html to learn about What is a mainframe? Then, after reading that section, click on Home to go to the top level table of contents. For more information about Linux on System z you can start here: http://www.ibm.com/systems/z/os/linux Click on the Library link for books, answers to frequently asked questions, etc. Enjoy, and welcome. - - - - - Timothy Sipples IBM Consulting Enterprise Software Architect Specializing in Software Architectures Related to System z Based in Tokyo, Serving IBM Japan and IBM Asia-Pacific E-Mail: [EMAIL PROTECTED] -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
