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IBM Systems Technical University Brazil Day 3 Breakout Sessions
Last week, I was in São Paulo, Brazil for IBM Systems Technical University.
Did the resort ask these two security guards to dress up as clowns? No, it turns out these were clowns dressed up as security guards! On other days, they were dressed in drag as housewives, or as Jamaican Rastafari in dreadlocks and tie-dyed tee shirts. Some of the attendees enjoyed their comic relief.
Here is my recap of Day 3 breakout sessions:
Demystifying Transparent Cloud Tiering for DS8000 and DFSMShsm
Ricardo Alan, IBM Client Technical Specialist, covered this recently announced synergy between DS8000 firmware and DFSMShsm, a part of the z/OS operating system for IBM Z mainframes.
(Historical note: I started my career as a software engineer for DFHSM, which was later renamed DFSMShsm, working my way up to lead architect for DFSMShsm, and later as chief architect for DFSMS overall. A good portion of my 19 patents are related to these products.)
Since the 1970s, mainframe clients were able to move less active data from expensive disk storage to lower cost tape media. DFSMShsm would be read data sets into the mainframe processor, chop them up into 16KB blocks, and then write them out to tape, often through an automated tape library.
Transparent Cloud Tiering introduces an alternative option. DFSMShsm now identifies which tracks of data need to be re-located, sends the request to IBM DS8000 storage device, and the IBM DS8000 sends the tracks as objects to the Cloud. Any application that references these data sets would automatically trigger a recall to bring the data back from the Cloud.
This feature is available for the DS8870 and DS8880 models, using the existing Ethernet ports already installed. No additional hardware is required. Enhancements to DFSMShsm will be rolled out via SPEs on z/OS releases. Initially, the system uses OpenStack Swift object protocol, but IBM has plans to support Amazon S3 protocol as well.
Data Migration Challenges and Solutions with IBM Enterprise Storage
Sidney Varoni Jr. presented this session on data migration methods. Data is migrated for three reasons. First, to re-balance across multiple storage arrays. If you bring in a new storage array, you often want to move data from older arrays to balance the workload.
The second reason is to get rid of old hardware altogether, you need to migrate the data to new hardware. With Dell acquisition of EMC, for example, many clients are using tools like TDMF to move data off of EMC and onto IBM DS8000 storage systems. IBM DS8000 storage systems are faster, easier to use and less expensive to operate from a total cost of ownership (TCO) than comparable capacity of EMC VMAX devices.
The third reason is to migrate from one data center to another. The average data center was built 10-15 years ago, and many no longer meet the needs and requirements of newer IT operations. Some clients are building new data centers, while others are moving their data to co-location facilities.
NVMe Over Fabrics: The next evolution in high performance for SSD interfaces is NVMe
Waner Dall Averde, Territory Representative from Brocade, presented this session on NVMe and NVMe Over Fabric (NVMeOF). As a joke, he showed this chart in Japanese.
(Fun Fact: The first Japanese immigrants arrived in Brazil in 1908. Brazil is home to the largest Japanese population outside Japan. Source: Wikipedia)
For the past 20 years, the Advanced Host Controller Interface (AHCI) served as the communication mechanism to send SCSI commands to SAS and SATA disk devices.
Unfortunately, AHCI is now the bottleneck between faster servers and faster Non-Volatile Memory such as Flash and Solid State Drive (SSD) storage devices. It only supports a handful of commands on a single command queue.
NVMe offers a replacement for the SCSI command set. It can support up to 64,000 commands on as many as 64,000 parallel command queues. Designed for 32 Gbps PCIe bus speeds, it is faster than traditional 6 Gbps and 12 Gbps SAS connections, reducing latency by 200 microseconds.
Unfortunately, PCIe cables are limited to just a few inches. PCIe Gen 1 supported 15 inches, PCIe Gen 2 supported 12 inches, and PCIe Gen 3 only 8 inches. To provide greater distances, NVMeOF allows the NVMe command set to be carried over long-distance networks, such as Ethernet, Infiniband or Fibre Channel.
Brocade Gen5 (16 Gbps) and Gen6 (32 and 128 Gbps) Fibre Channel switches and directors already support NVMeOF, and are designed to allow co-existence between NVMe and SCSI commands for smooth transition in mixed environments. Clients can buy their networking gear directly from IBM.
IBM Power Systems Flash Cache Acceleration
Petra Bührer, IBM Offering Manager for Power Systems software, explained recent the performance enhancement called "Flash Cache Acceleration".
This is a feature on POWER8 servers running AIX 7.1 TL4 SP2, AIX 7.2 TL0 SP0 – or higher. By using internal or direct-attach SSD, the operating system can cache most active blocks of data from external storage systems.
While this is certified for use with Oracle, it supports only single-instance databases. Oracle RAC and other active/active configurations are not supported at this time.
The Secret to IBM Disk Encryption - Deep Dive
As if Mo McCullough, one of the event coordinators for this conference, was not busy enough with keeping the conference going, he also gave technical presentations.
With the excitement over the IBM z14 end-to-end encryption announcement, there has been increased demand for everything related to encryption and security.
Unfortunately, I had to leave for the airport before the "Closing Session". The Club Med Lake Paradise resort was 60-90 minutes away from the GRU airport, and rush hour traffic in a city of 12 million people can get really bad.