Re: zLinux and IBM 3592-E05 tape drives
Thanks Allen I sent in a request for the software. I don't have the hardware, but I can install the software on an image and read the manuals. In the "Getting Started with zSeries Fibre Channel Protocol" Redpaper, which was for z/800, z/900 processors, it answered my question. There are 240 subchannels defined on a FCP port. By giving one subchannel per Linux image, effectively limiting the number of Linux images that have access to FCP devices, all Linux images can have access to the devices on the FC SAN. I think 240 zLinux images will be sufficient, for now. I also see how they are mapped, from zLinux, to VM, to IOCP, to WWPN and so on, and how the FC SAN switch works (reminds me of an Escon Director). Tom Duerbusch THD Consulting (all you really ever needed was a 370 mode processor and bus and tag devices) >>> [EMAIL PROTECTED] 10/2/2006 6:09 PM >>> On Monday, 10/02/2006 at 04:41 EST, Tom Duerbusch <[EMAIL PROTECTED]> wrote: > Not on a z9z/890... Industry-standard N_Port ID Virtualization (NPIV) on the z9 is needed if you want to apply zoning and LUN masking (FC access controls) to virtual machines and/or LPARs just as they are for discrete systems. With NPIV, each FCP subchannel, rather than chpid, is assigned a unique WWPN. Matching support in the local FC switch is required. On a z890 and z990 you can use the Linux-based FCP LUN Access Control utility to control guest/LPAR access to WWPNs and LUNs. Even though the other systems and switches see just one WWPN per FC chpid (and no special switch support is needed), the utility instructs the FCP adapter to act as a gatekeeper. Read more about it on ResourceLink at https://www-1.ibm.com/servers/resourcelink/hom03010.nsf/pages/fcpaccumain?opendocument. (You get to this by navigating first to Tools and then selecting "Configuration Utility for FCP LUN Access Control" in the first column.) Alan Altmark z/VM Development IBM Endicott
Re: zLinux and IBM 3592-E05 tape drives
Tom, yes, you can configure port to be in FCP or FICON mode, so on one card you can use both protocols. Marian Gasparovic IBM Slovakia --- Tom Duerbusch <[EMAIL PROTECTED]> wrote: > OK, I'm reading this as one port of the 4 ports on > my FICON adapter can be configured as a FCP Channel. > Is that correct? > __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Re: zLinux and IBM 3592-E05 tape drives
Wait a minutewh there... I was under the impression that the difference between a Ficon card and a FCP card was the microcode. AND a single card can not be used for both FICON and FCP connections. However, the following from the FCP LUN Access Control utility seems to say the opposite: "A zSeries 990 or 890 system with licensed internal code driver 55 and any required patches, and at least one FICON® Express card with an associated port configured as an FCP Channel in the IOCDS " OK, I'm reading this as one port of the 4 ports on my FICON adapter can be configured as a FCP Channel. Is that correct? We currently have a single FICON card to our DS6800. We are going to acquire a second FICON card for reduncey and connect it to the DS6800. I was going to take a port from each card and connect it to a proposed VTS. Then I needed two FCP cards, for reduncy, for connection to the FC SAN thingie. I can easily afford to take a port from each of my FICON cards for the FCP function, therefore eliminating the cost of the dual FCP cards. So, is that something I can do? Thanks Tom Duerbusch THD Consulting >>> [EMAIL PROTECTED] 10/2/2006 6:09 PM >>> On Monday, 10/02/2006 at 04:41 EST, Tom Duerbusch <[EMAIL PROTECTED]> wrote: > Not on a z9z/890... Industry-standard N_Port ID Virtualization (NPIV) on the z9 is needed if you want to apply zoning and LUN masking (FC access controls) to virtual machines and/or LPARs just as they are for discrete systems. With NPIV, each FCP subchannel, rather than chpid, is assigned a unique WWPN. Matching support in the local FC switch is required. On a z890 and z990 you can use the Linux-based FCP LUN Access Control utility to control guest/LPAR access to WWPNs and LUNs. Even though the other systems and switches see just one WWPN per FC chpid (and no special switch support is needed), the utility instructs the FCP adapter to act as a gatekeeper. Read more about it on ResourceLink at https://www-1.ibm.com/servers/resourcelink/hom03010.nsf/pages/fcpaccumain?opendocument. (You get to this by navigating first to Tools and then selecting "Configuration Utility for FCP LUN Access Control" in the first column.) Alan Altmark z/VM Development IBM Endicott
Re: zLinux and IBM 3592-E05 tape drives
On Monday, 10/02/2006 at 04:41 EST, Tom Duerbusch <[EMAIL PROTECTED]> wrote: > Not on a z9z/890... Industry-standard N_Port ID Virtualization (NPIV) on the z9 is needed if you want to apply zoning and LUN masking (FC access controls) to virtual machines and/or LPARs just as they are for discrete systems. With NPIV, each FCP subchannel, rather than chpid, is assigned a unique WWPN. Matching support in the local FC switch is required. On a z890 and z990 you can use the Linux-based FCP LUN Access Control utility to control guest/LPAR access to WWPNs and LUNs. Even though the other systems and switches see just one WWPN per FC chpid (and no special switch support is needed), the utility instructs the FCP adapter to act as a gatekeeper. Read more about it on ResourceLink at https://www-1.ibm.com/servers/resourcelink/hom03010.nsf/pages/fcpaccumain?opendocument. (You get to this by navigating first to Tools and then selecting "Configuration Utility for FCP LUN Access Control" in the first column.) Alan Altmark z/VM Development IBM Endicott
Re: zLinux and IBM 3592-E05 tape drives
Not on a z9z/890... Tom Duerbusch THD Consulting >>> [EMAIL PROTECTED] 10/2/2006 3:50:17 PM >>> Will reply with different detail on the LINUX-390 list, where this was cross posted. The only ATTACH/DETACH in the traditional sense would be the FCP channels. They work a lot like ethernet adapters. Think of them as OSAs and things begin to make more sense. But they are called "channels" in SAN land. So then, the tape drives in question are "out there" in the storage area network. Attaching those is a different concept than CP ATTACH or DETACH. Are you running a z9? If not, then all of your Linux guests will look like the same mainframe to the SAN. -- R; Tom Duerbusch <[EMAIL PROTECTED]> Sent by: The IBM z/VM Operating System 10/02/2006 03:55 PM Please respond to The IBM z/VM Operating System From Tom Duerbusch <[EMAIL PROTECTED]> To IBMVM@LISTSERV.UARK.EDU cc Subject zLinux and IBM 3592-E05 tape drives We are thinking about buying some IBM 3592-E05 tape drives for the Open System group (well, actually, it's comming out of their budget), and we will put them in our, yet to be purchased IBM 3494 robotics unit. The tape drives will be dedicated to a FC SAN thingie. Apparently, we can attach the mainframe to the FC SAN thingie, using FCP connections. Then, zLinux can have access to them. As FCP tape drives are not known to VM. And I have some 20-30 Linux images running under VM, what is the procedure to attach/detach these tape drives to each image? Or is it something stupid, like I have to dedicate the drives to one machine and then backup over vswitch from one machine to another to the tape drives? (I say stupid, as backing up over "communications" usually takes more resources than backing up over hardwaredirectly to the drives.) Tom Duerbusch THD Consulting
Re: zLinux and IBM 3592-E05 tape drives
Will reply with different detail on the LINUX-390 list, where this was cross posted. The only ATTACH/DETACH in the traditional sense would be the FCP channels. They work a lot like ethernet adapters. Think of them as OSAs and things begin to make more sense. But they are called "channels" in SAN land. So then, the tape drives in question are "out there" in the storage area network. Attaching those is a different concept than CP ATTACH or DETACH. Are you running a z9? If not, then all of your Linux guests will look like the same mainframe to the SAN. -- R; Tom Duerbusch <[EMAIL PROTECTED]> Sent by: The IBM z/VM Operating System 10/02/2006 03:55 PM Please respond to The IBM z/VM Operating System From Tom Duerbusch <[EMAIL PROTECTED]> To IBMVM@LISTSERV.UARK.EDU cc Subject zLinux and IBM 3592-E05 tape drives We are thinking about buying some IBM 3592-E05 tape drives for the Open System group (well, actually, it's comming out of their budget), and we will put them in our, yet to be purchased IBM 3494 robotics unit. The tape drives will be dedicated to a FC SAN thingie. Apparently, we can attach the mainframe to the FC SAN thingie, using FCP connections. Then, zLinux can have access to them. As FCP tape drives are not known to VM. And I have some 20-30 Linux images running under VM, what is the procedure to attach/detach these tape drives to each image? Or is it something stupid, like I have to dedicate the drives to one machine and then backup over vswitch from one machine to another to the tape drives? (I say stupid, as backing up over "communications" usually takes more resources than backing up over hardwaredirectly to the drives.) Tom Duerbusch THD Consulting
zLinux and IBM 3592-E05 tape drives
We are thinking about buying some IBM 3592-E05 tape drives for the Open System group (well, actually, it's comming out of their budget), and we will put them in our, yet to be purchased IBM 3494 robotics unit. The tape drives will be dedicated to a FC SAN thingie. Apparently, we can attach the mainframe to the FC SAN thingie, using FCP connections. Then, zLinux can have access to them. As FCP tape drives are not known to VM. And I have some 20-30 Linux images running under VM, what is the procedure to attach/detach these tape drives to each image? Or is it something stupid, like I have to dedicate the drives to one machine and then backup over vswitch from one machine to another to the tape drives? (I say stupid, as backing up over "communications" usually takes more resources than backing up over hardwaredirectly to the drives.) Tom Duerbusch THD Consulting
