• 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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• 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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• How Big Blue Stacks Up IBM i On Premises And On Cloud

  June 24, 2019 Timothy Prickett Morgan

  Here’s the $64,000 question: How much more does a slice of the IBM Cloud running IBM i cost compared to buying an on-premises machine with the same rough amount of capacity and installing IBM i on it and putting it into production? The answer to that question is: That all depends. But in general, as is the case with all infrastructures available on premises and on the cloud, the cloud is always more expensive.

  This is not a surprise if you think about it for a moment. By using cloudy infrastructure, you are offloading the hassle of maintaining hardware and …

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• Power Systems Refreshes Flash Drives, Promises NVM-Express For IBM i

  April 29, 2019 Timothy Prickett Morgan

  There was a time after Mark Olsen retired a few years back when the presentations concerning Power Systems hardware as it related to the IBM i platform were not as detailed as we were used to. But a new team of people are running the show now, and they are getting better and that helps us all understand what Big Blue is doing on the hardware front even better.

  As part of the April 23 announcements, IBM added a bunch of new storage and networking peripherals to its Power8 and Power9 system lineup. You can read all about it in …

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