OpenVMS has an amazing cluster system, and yes they did upgrade one machine at a time in the cluster and lose no overall uptime.
I think the bigger IBM z machines do allow zero-time upgrades, but the iSeries (new name for AS/400) is basically a reboot the machine affair. I've never heard of Sysplex in regards to the iSeries.
They sent me two DVDs with 12 pages of instructions. The unnumbered first page is release notes and a notice that physical media deliveries would be an average of 5 to 9 business days on Jan 31, 2007 and beyond. (odd notice for a 2016 document)
Page 1 has my customer information with all sorts of tracking numbers. It also include the number of selected files (1,360), Kilo-bytes (sp) of data (3,963,529), fixes (3,394 fixes with 815 Kilo-bytes of data were superceded), etc.
Pre-install instructions finally show up on page 3 and the big warning about f'n it up shows on page 4. Page 6 brings us to the actual install which is written to be typed exactly with exact detailed results of each step.
to give an example
2. Load the image catalog into the virtual optical
device using the following command:
LODIMGCLG IMGCLG(ptfcatalog) DEV(OPTVRTxx) OPTION(*LOAD)
3. Type GO PTF and press the Enter key
4. Take menu option 8 and press Enter key
Took about an two hours counting the the 45 minute reboot. We have a very old and slow machine (need to buy a new one in the next two years, we are at a decade of use now) so reboots are a bit slow.
I think the bigger IBM z machines do allow zero-time upgrades, but the iSeries (new name for AS/400) is basically a reboot the machine affair. I've never heard of Sysplex in regards to the iSeries.
They sent me two DVDs with 12 pages of instructions. The unnumbered first page is release notes and a notice that physical media deliveries would be an average of 5 to 9 business days on Jan 31, 2007 and beyond. (odd notice for a 2016 document)
Page 1 has my customer information with all sorts of tracking numbers. It also include the number of selected files (1,360), Kilo-bytes (sp) of data (3,963,529), fixes (3,394 fixes with 815 Kilo-bytes of data were superceded), etc.
Pre-install instructions finally show up on page 3 and the big warning about f'n it up shows on page 4. Page 6 brings us to the actual install which is written to be typed exactly with exact detailed results of each step.
to give an example
Took about an two hours counting the the 45 minute reboot. We have a very old and slow machine (need to buy a new one in the next two years, we are at a decade of use now) so reboots are a bit slow.