Looks like there will be a zVM apar soon to correct this. -----Original Message----- From: Smith, Ann (ISD, IT) Sent: Wednesday, October 01, 2008 11:23 AM To: 'Linux on 390 Port' Subject: RE: Question about Global Mirror/XRC
Thanks for your input. Unfortunately for us we have no access to TPC-R. The zOS storage folks control it. They say they have put our VM volumes into global mirror. But although we can vary VM volumes online we can't use any of them . Can't even read volume labels. Acting as if the secondary in a PPRC pair rather than primary. Without any access its hard to tell what has been done. Our testing went well when we controlled PPRC from VM. But now TPC-R testing has begun. -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Mary Anne Matyaz Sent: Tuesday, September 30, 2008 6:23 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Question about Global Mirror/XRC 1) Is 'XRC' and 'Global Mirror' the same thing? YES. (2) I see questions posted in the past regarding 'GDPS/XRC' and z/VM not supporting timestamps. That is correct, XRC of zVM systems does not support timestamps, so you cannot recover to a sync'ed point in time, but you can just recover, from wherever you were. Is 'GDPS/XRC' a special XRC for GDPS? SORTOF. There is GDPS, an IBM Global Services offerering that manages the SDMPLEX, and XRC, and then there is just XRC. You can use GDPS and XRC, or you can just use XRC. GDPS requires Netview and SA/390. (3) Is there a version of XRC/Global Mirror that supports z/VM and linux guests? Again, sortof. All versions support Linux guests, as Linux does do timestamping. I don't think any version technically 'supports' z/VM as it isn't timestamped, but in our experience, it works fine. But then again, we are not a CMS user. I recommend you just try it. Place some VM and Linux dasd in XRC, let them copy, and then do your XRECOVER and IPL off the tertiaries to test it out. I don't know what TPC-R is. XRC is, put very simply, a long distance version of PPRC. So if PPRC is working fine, XRC, or Global Mirror, should as well. MA On Tue, Sep 30, 2008 at 3:28 PM, Smith, Ann (ISD, IT) < [EMAIL PROTECTED]> wrote: > We are in the process of moving z/OS, z/VM and linux guests to new > IBM dasd (DS8300). > We are using PPRC XD - asynch to DR site. > We had an issue with having to manually run FSCK against linux > filesystems that we hoped could be helped by establishing global mirror. > I am trying to get information on using global mirror with z/VM > systems and have a couple of pretty basic questions. > (1) Is 'XRC' and 'Global Mirror' the same thing? > (2) I see questions posted in the past regarding 'GDPS/XRC' and z/VM > not supporting timestamps. Is 'GDPS/XRC' a special XRC for GDPS? > (3) Is there a version of XRC/Global Mirror that supports z/VM and > linux guests? > > PPRC-XD working fine for z/VM and linux guests. z/VM and z/OS dasd are > in same DS8300 so would need same global mirror. Flashcopies on z/VM > (using a z/VM starter system) worked fine but now TPC-R is being > tested (windows PC with GUI). If anyone could help me find doc on > setting up global mirror so it can work for z/VM as well as z/OS it > would be greatly appreciated. Anyone else using TPC-R to perform dasd > functions for z/VM? > > Ann Smith > Mainframe Systems Support -zVM and zLinux Support Integrated > Technology Delivery IBM Global Service Integrated Operations At The > Hartford Work phone: 860-547-6110 > Pager: 800-204-6367 > Email: mailto:[EMAIL PROTECTED] > > > > > > ********************************************************************** > *** This communication, including attachments, is for the exclusive > use of addressee and may contain proprietary, confidential and/or > privileged information. If you are not the intended recipient, any > use, copying, disclosure, dissemination or distribution is strictly > prohibited. If you are not the intended recipient, please notify the > sender immediately by return e-mail, delete this communication and > destroy all copies. > ********************************************************************** > *** > > > ---------------------------------------------------------------------- > 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 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 ************************************************************************* This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential and/or privileged information. 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