• Security Vulnerability In VIOS, AIX, And Maybe IBM i

  November 23, 2020 Timothy Prickett Morgan

  IBM i shops that use the Virtual I/O Server, which is a cut-down version of the AIX implementation of Unix created by Big Blue, have to be aware that there is a security vulnerability that affects recent releases of AIX and VIOS.

  The vulnerability, announced in Security Vulnerability CVE-2020-4788, affects Power9 machinery running VIOS 3.1 or AIX 7.1 and AIX 7.2, and under what are called “extenuating circumstances” the vulnerability could allow a local user on the system to obtain sensitive information stored on the L1 cache on the Power9 cores.

  The vulnerability was reported on November 18, and …

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• How Much Does NVM-Express Flash Really Boost IBM i Performance?

  November 9, 2020 Timothy Prickett Morgan

  With the NVM-Express protocol, a storage overlay for the PCI-Express peripheral bus that allows flash to be addressed in a parallel fashion as flash in its own right and not as emulated disk storage using a SATA or SCSI protocol, the idea is to get those vintage storage drivers out of the way and let the operating system kernel speak directly to the flash. This is done so the impressive – and seemingly always growing – I/O bandwidth of flash can actually be brought to bear to speed up applications.

  Flash in general, and NVM-Express flash in particular, has been …

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• Cloud Walkers Updates IBM i Partition Manager, Slashes Prices

  November 2, 2020 Timothy Prickett Morgan

  All over the world, a lot of things are taking a bit longer to get done these days thanks to the disruption caused by the coronavirus pandemic. But things are still getting done, and that is the main thing. So it is with Bartlomiej Grabowski, the founder and chief executive officer of Cloud Walkers, the startup based in Prague in the Czech Republic who released a tool called LPARKit, which we covered at its V1 release back in December 2019.

  The plan, Grabowski tells The Four Hundred, was to take all of the input from the V1 users …

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• The Rest Of October’s Power Systems Software Announcements

  October 19, 2020 Timothy Prickett Morgan

  The software stack in the Cognitive Systems division, which most of us still call the Power Systems division, is a lot wider and deeper than the IBM i stack, even though IBM i does represent a lot of the software functionality and generates a lot of the revenue stream for Power Systems machinery.

  In addition to the Technology Refresh updates for IBM i 7.4 and IBM i 7.3, which were announced on October 6 and which will be available on November 13, Big Blue also updated a bunch of other pieces of systems software that run on Power Systems, which …

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• IBM i PTF Guide, Volume 22, Number 27

  July 14, 2020 Doug Bidwell

  Welcome to the second half of 2020 after a brief holiday hiatus from The Four Hundred and therefore the IBM i PTF Guide.

  There is another new HIPER for the Virtual I/O Server, or VIOS, which again we know all of you IBM i shops love dearly. The HIPER is IJ25390, and it is for slow TCP performance with the Virtual Ethernet adapter and large send. Here is some more on that LSO – short for large send offload – and specifically a link that explains it better than we did two weeks ago, plus another link to a …

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• IBM i PTF Guide, Volume 22, Number 26

  July 6, 2020 Doug Bidwell

  Well, we made it through half of 2020, and that is something of a miracle. Let’s hope the second half is not so dramatic. The odds are not favoring that at the moment, but hope springs eternal and that is how we have made it through the past 15,000 years of pre-history to today, if you think about it. It’s helpful to take the long view at critical times.

  As far as PTFs go, there is a new HIPER for the Virtual I/O Server, or VIOS, which we know all you IBM i shops love. The HIPER is IJ25390, and …

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• IBM Doubles Up Memory And I/O On Power Iron To Bend The Downturn

  May 18, 2020 Timothy Prickett Morgan

  Back in early January, before the coronavirus pandemic had kicked in outside of Wuhan, China, Big Blue decided to rejigger the pricing on the memory and flash storage used in the current Power8 and Power9 systems lineup. Small form factor flash drives had a price increase of 6 percent to 7 percent, fatter SAS drives had a price increase of 6 percent to 14 percent, and on some machines they went down 10 percent. NVM-Express flash cards had price decreases of 16 percent to 27 percent. Main memory prices were cut anywhere from 2.4 percent to 18.5 percent, with the …

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• Where Is IBM i?

  May 13, 2020 Alex Woodie

  If you’ve worked with the IBM i platform for any length of time, you realize that it can be hard to find. That’s true in the field, where companies sometimes aren’t even aware their applications are running on an IBM i system. But it’s also true when it comes to IBM’s own website, where you’d think i might be easier to find.

  Finding the IBM i homepage by navigating IBM’s website (www.ibm.com) is a bit like searching for the bathroom in the mall by walking the entire length of every floor. You know it has to be there. …

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• Sharing Tape Libraries Across Partitions Without VIOS

  May 4, 2020 Alex Woodie

  IBM i shops have a love-hate relationship when it comes to the Virtual I/O Server, or VIOS. With the latest IBM i Technology Refresh, IBM is giving the anti-VIOS group a feature they have been requesting: the capability to easily share a tape library among multiple logical partitions, or LPARs without involving VIOS, SANs, or multiple adapters.

  IBM is calling the new feature “IBM i Virtualization for Tape Libraries,” and it’s based on RFE (request for enhancement) number 127631. While the words “tape libraries” and “virtualization” are in there, this is not a virtual tape library (VTL) solution. That already …

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• Here’s What’s In the Latest IBM i Technology Refreshes

  April 15, 2020 Alex Woodie

  As expected, IBM today officially unveiled its spring Technology Refreshes for IBM i. Among the goodies that will become available for IBM i 7.4 TR2 or IBM i 7.3 TR8 (or both) are enhancements to Db2 Mirror, a new approach to tape library virtualization, improvements to open source, and new features and functionality around Db2, RPG, RDi, and security, too.

  Months ago, IBM execs circled April 14 on their calendars as the day for the big IBM 7.4 TR2 and IBM i 7.3 TR8 reveal, with the idea that the following week’s POWERUp conference in Atlanta, Georgia (now canceled, but …

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