Two years ago DancingDinosaur wrote about new IBM Flash storage for the mainframe. That was about the DS8870, featuring 6-nines (99.9999) of availability and real-time-compression. Then this past May DancingDinosaur reported on another new IBM all-flash initiative, including the all-flash IBM DS8888 for the z, which also boasts 6-nines availability. Just this week IBM announced it is completing its flash lineup with the IBM DeepFlash 150, intended as a building block for SDS (software defined storage) infrastructures.
IBM DeepFlash 150, courtesy of IBM
As IBM reports, the DeepFlash 150 does not use conventional solid-state drives (SSD). Instead, it relies on a systems-level approach that enables organizations to manage much larger data sets without having to manage individual SSD or disk drives. DeepFlash 150 comes complete with all the hardware necessary for enterprise and hyper-scale storage, including up to 64 purpose-engineered flash cards in a 3U chassis and 12-Gbps SAS connectors for up to eight host servers. The wide range of IBM Spectrum Storage and other SDS solutions available for DeepFlash 150 provides flash-optimized scale out and management along with large capacity for block, file and object storage.
The complication for z System shops is that you access the DeepFlash 150 through IBM Spectrum Scale. Apparently you can’t just plug the DeepFlash 150 into the z the way you would plug in the all flash DS8888. IBM Spectrum Scale works with Linux on z Systems servers or IBM LinuxONE systems running RHEL or SLES. Check out the documentation here.
As IBM explains in the Red Book titled IBM Spectrum Scale (GPFS) for Linux on z Systems: IBM Spectrum Scale provides a highly available clustering solution that augments the strengths of Linux on z by helping the z data center control costs and achieve higher levels of quality of service. Spectrum Scale, based on IBM General Parallel File System (GPFS) technology, is a high performance shared-disk file management solution that provides fast, reliable access to data from multiple nodes in a cluster environment. Spectrum Scale also allows data sharing in a mixed platform environment, which can provide benefits in cloud or analytics environments by eliminating the need of transferring data across platforms. When it comes to the DeepFlash 150 IBM is thinking about hyperscale data centers.
Hyperscale data centers can’t absorb the costs of constructing, managing, maintaining and cooling massive hyper- scale environments that use conventional mechanical storage, according to IBM. Those costs are driving the search for storage with a smaller physical footprint, lower costs, greater density, and, of course, much higher performance.
Enter DeepFlash 150, which introduces what IBM considers breakthrough economics for active data sets. The basic DeepFlash 150 hardware platform is priced under $1/GB. For big data deployments IBM recommends IBM Spectrum Scale with DeepFlash 150, providing customers with the overlying storage services and functionality critical for optimization of their big data workloads.
But even at $1/GB DeepFlash 150 isn’t going to come cheap. For starters consider how many gigabytes are in the terabytes or petabytes you will want to install. You can do the math. Even at $1/GB this is going to cost. Then you will need IBM Spectrum Scale. With DeepFlash 150 IBM did achieve extreme density of up to 170TB per rack unit, which adds up to a maximum 7PB of flash in a single rack enclosure.
IBM Spectrum Scale and the DeepFlash 150 are intended to support a wide range of file, object and Hadoop Distributed File System (HDFS) analytics work-loads. According to IBM, as a true SDS solution IBM Spectrum Scale can utilize any appropriate hardware and is designed specifically to maximize the benefits of hyper-scale storage systems like DeepFlash 150. Using a scale-out architecture, IBM Spectrum Scale can add servers or multiple storage types and incorporate them automatically into a single managed resource to maximize performance, efficiency, and data protection.
Although DeepFlash 150 can be used with a private cloud IBM seems to be thinking more in terms of hybrid clouds. To address today’s need for seamlessly integrating high-performance enterprise storage such as DeepFlash 150 with the nearly unlimited resources and capabilities of the cloud, IBM Spectrum Scale offers transparent cloud tiering to place data on cloud-based object storage or in a public cloud service. As IBM explains, the transparent cloud tiering feature of IBM Spectrum Scale can connect on- premises storage such as DeepFlash 150 directly to object storage or a commodity-priced cloud service. This allows enterprises to simultaneously leverage the economic, collaboration, and scale benefits of both on- premises and cloud storage while providing a single, powerful view of all data assets.
A Tech Target report on enterprise flash storage profiled 15 flash storage product lines. In general, the products claim maximum read IOPS ranging from 200,000 to 9 million, peak read throughput from 2.4 GBps to 46 GBps, and read latencies from 50 microseconds to 1 millisecond. The guide comes packed with a ton of caveats. And that’s why DancingDinosaur doesn’t think the DeepFlash 150 is the end of IBM’s flash efforts. Stay tuned.
DancingDinosaur is Alan Radding, a veteran information technology analyst and writer. Please follow DancingDinosaur on Twitter, @mainframeblog. See more of his IT writing at technologywriter.com and here.