Posts Tagged ‘FICON’

IBM Enhances the DS8000 Storage Family for New Challenges

October 30, 2015

Earlier this month IBM introduced a family of business-critical hybrid data storage systems that span a wide range of price points. The family is powered by the next generation of IBM’s proven DS8000 storage platform and delivers critical application acceleration, 6-nines (99.9999) availability, and industry-leading capabilities, like integrated high performance flash.  And coming along in November and December will be new tape storage products.


DS8880, courtesy of IBM (click to enlarge)

The company sees demand for the new storage being driven by cloud, mobile, analytics, and security. As IBM continues to encourage data centers to expand into new workloads, it is introducing a new family of business-critical hybrid flash data systems primarily to support the latest requirements of z System- and Power-based data centers. If your shop hasn’t started to experience a ramp up of new workloads it likely will soon enough.

The new storage family, all based on POWER8 and the DS8000 software stack, currently consists 3 models:

  1. The entry model, the DS8884, delivers fast hybrid flash starting at under $50K. It offers up to 12 cores, 256 GB total system memory, 64 16GB FCP/FICON ports, and 768 HDD/SSD + 120 Flash cards in a 19”, 40u rack.
  2. The DS8886 brings a 2x performance boost, up to 48 cores, 2 TB total system memory, 128 16GB FCP/FICON ports, and 1536 HDD/SSD’s + 240 Flash cards packed into a 19”, 46u rack.
  3. The high end DS8888, according to IBM, is the industry’s fastest T1 Subsystem. It offers all-flash with up to 96 cores, 2 TB total system memory, 128 16GB FCP/FICON ports, and 480 Flash cards packed in the 19”, 40u rack. Won’t be available until spring 2016.

Being built on the DS8000 software stack, the new storage brings unparalleled integration with IBM z System. The systems are especially tuned for insight and cloud environments. They also deliver top efficiency and maximum utilization of resources including staff productivity, space utilization and lower cost through streamlined operations and a 30% reduction in footprint vs. 33″-34” racks.

The DS8888 family comes with two license options: Base function license provides Logical Configuration support for FB, Original Equipment License (OEL), IBM Database Protection, Thin Provisioning, Encryption Authorization, Easy Tier, and I/O Priority Manager. The z Synergy Service  Function license brings PAV, and Hyper-PAV, FICON and High Performance FICON (zHPF), IBM z/OS Distributed Data Backup, and a range of Copy Services Functions including FlashCopy, Metro Mirror, Global MirrorMetro/Global Mirror, z/Global Mirror & z/Global Mirror Resync, and Multi-Target PPRC .

The DS8880 family also provides 99.9999% uptime, an increase over the typical industry uptime benchmark of 99.999% uptime. That extra decimal point translates into 365.243 continuous days of uptime per year. Even the most mission-critical application can probably live with that.

The High-Performance Flash Enclosure for the DS8880 family redefines what IBM considers true enterprise hybrid flash data systems should be, especially in terms of performance for critical applications. Usually, hybrid systems combine flash and traditional spinning drives to be deployed among a variety of mixed workloads of private or public clouds, while reserving more costly all-flash storage for delivering the most extreme performance for only those applications that require it. Now IBM recommends hybrid configurations for consolidation of virtually all workloads since the DS8880 preserves the flexibility to deliver flash performance exactly where and when it is needed automatically through Easy Tier, which optimizes application performance dynamically across any DS8880 configuration without requiring administrators to manually tune and retune applications and storage.

The DS8880 also supports a wide variety of enterprise server and virtual server platforms, but not all are created equal. It includes special integration with z Systems and IBM Power Systems. This is due to the advanced microcode that has been developed and enhanced in lockstep with the mainframe’s I/O architecture over the past several decades. For Power shops the DS8880 copy services are tightly integrated with IBM PowerHA SystemMirror for AIX and IBM i, which add another level of assurance for users who need 24×7 business continuity for their critical Power systems.

For shops dealing with VMware, the DS8880 includes interoperability with VMware vStorage APIs for Array Integration, VMware vCenter Site Recovery Manager, and a VMware vCenter plug-in that allows users to offload storage management operations in VMware environments to the DS8880. Should you prefer to go the other direction, the DS8880 supports IBM Storage Management Console for VMware vCenter to help VMware administrators independently monitor and control their storage resources from the VMware vSphere Client GUI.

If you didn’t notice, there have been a series of interesting announcements coming out of IBM Insight, which wrapped up yesterday in Las Vegas. DancingDinosaur intends to recap some of the most interesting announcements in case you missed them.

DancingDinosaur is Alan Radding, a veteran information technology analyst and writer. Please follow DancingDinosaur on Twitter, @mainframeblog. See more of his IT writing at and here.

EMC Introduces New Mainframe VTL

August 16, 2012

EMC introduced the high end DLm8000, the latest in its family of VTL products. This one is aimed for large enterprise mainframe environments and promises to ensure consistency of data at both production and recovery sites and provide the shortest possible RPO and RTO for critical recovery operations.

It is built around EMC VMAX enterprise storage and its SRDF replication and relies on synchronous replication to ensure immediate data consistency between the primary and target storage by writing the data simultaneously at each. Synchronous replication addresses the potential problem latency mismatch that occurs with the usual asynchronous replication, where a lag between writes to the primary and to the backup target storage can result in inconsistent data.

Usually this mismatch exists for a brief period. EMC suggests the issue, especially for large banks and financial firms—its key set of mainframe target customers—is much more serious. Large financial organizations with high transaction volume, EMC notes, have historically faced recovery challenges because their mainframe tape and DASD data at production and secondary sites were never fully in synch.  As such, recovery procedures often slowed until the differences between the two data sets were resolved, which slowed the resulting failover.  This indeed may be a real issue but for only a small number of companies, specifically those that need an RTO and RPO of just about zero.

EMC used the introduction of the DLm8000 to beat up tape backup in general. Physical tape transportation by third party records management companies, EMC notes, hinders recovery efforts by reducing what it refers to as the granularity of RPOs while dramatically increasing the RTO.  In addition, periodic lack of tape drive availability for batch processing and for archive and backup applications can impair SLAs, further increasing the risks and business impact associated with unplanned service interruptions. That has been long recognized, but, remember EMC is a company that sells disk, not tape storage, and ran a Tape Sucks campaign after its purchase of Data Domain. What would you expect them to say? 

The DLm8000 delivers throughput of up to 2.7 GB/s, which it claims is 2.5x the performance of its nearest competitor. DancingDinosaur can’t validate that claim, but EMC does have a novel approach to generating the throughput. The DLm8000 is packed with eight Bus-Tech engines (acquired in its acquisition of Bus-Tech in Nov. 2010) and it assigns two FICON connections to each engine for a total of 16 FICON ports cranking up the throughput. No surprise they can aggregate that level of throughput.

EMC has not announced pricing for the DLm8000. The device, however, is the top of its VTL lineup and VMAX enterprise storage tops its storage line. With high throughput and synchronous replication, this product isn’t going to be cheap. However, if you need near zero RPO and RTO then you have only a few choices.

Foremost among those choices should be the IBM TS7700 family, particularly the 7740 and the 7720. Both of these systems provide VTL connectivity. The TS7700 avoids the latency mismatch issue by using a buffer to get the most optimal write performance and then periodically synch primary and target data. “Synchronous as EMC does it for VTL is overkill,” says an IBM tape manager. The EMC approach essentially ignores the way mainframe tape has been optimized.

Among the other choices are the Oracle Virtual Storage Manager and Virtual Library Extension. Oracle uses StorageTek tape systems. The Oracle approach promises to improve tape drive operating efficiencies and lower TCO by optimizing tape drive and library resources through a disk-based virtual tape architecture. HDS also has a mainframe tape backup and VTL product that uses Luminex technology.

EMC is a disk storage company and its DLm8000 demonstrates that. When it comes to backup, however, mainframe shops are not completely averse to tape. Disk-oriented VTL has some advantages but don’t expect mainframe shops to completely abandon tape.

In breaking storage news, IBM today announced acquiring Texas Memory Systems (TMS), a long established (1978) Texas company that provides solid state memory to deliver significantly faster storage throughput and data access while consuming less power. TMS offers its memory as solid state disk (SSD) through its RamSan family of shared rackmount systems and Peripheral Component Interconnect Express (PCIe) cards. SSD may be expensive on a cost per gigabyte basis but it blows away spinning hard disk on a cost per IOPS. Expect to see IBM to use TMS’s SSD across its storage products as one of its key future storage initiatives, as described by Jai Menon, CTO and VP, Technical Strategy for IBM Systems and Technology Group (STG), at last June’s Storage Edge 2012 conference. BottomlineIT, DancingDinosaur’s sister blog, covered it here back in June. BTW, Edge 2013 already is scheduled for June 10-14 in Las Vegas.


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