Cambex enters mainframe DASD market with low-cost disk array; Company's first Cascade array DASD offers fully mirrored storage systems for price of non-mirrored products.WALTHAM, Mass.--(BUSINESS WIRE)--April 11, 1995--Cambex Corporation announced today a disk array storage system that it claims offers the best cost/performance and highest availability at the lowest price in the mainframe direct access storage market.
The company's new Cascade Array DASD (Direct Access Storage Device) Pronounced "daz-dee." A peripheral device that is directly addressable, such as a disk or drum. The term is used in the mainframe world.
DASD - Direct-Access Storage Device is Cambex's first entry into the $5-billion-a-year mainframe DASD market and is intended to compete with the latest products from IBM (International Business Machines Corporation, Armonk, NY, www.ibm.com) The world's largest computer company. IBM's product lines include the S/390 mainframes (zSeries), AS/400 midrange business systems (iSeries), RS/6000 workstations and servers (pSeries), Intel-based servers (xSeries) , EMC Corporation EMC Corporation (NYSE: EMC) is an American Fortune 500 and S&P 500 manufacturer of software and systems for information management and storage. It is headquartered in Hopkinton, Massachusetts, USA. , Hitachi Data Systems See HDS. , Storage Technology and Amdahl Corporation (company) Amdahl Corporation - A US computer manufacturer. Amdahl is a major supplier of large mainframes, UNIX and Open Systems software and servers, data storage subsystems, data communications products, applications development software, and a variety of educational and . It plans to introduce a RAID-5 product later this year.
"As a well-established supplier of mainframe memory, we felt it was important to set new performance and value standards with our first offering, in a DASD market that is changing rapidly," Joseph F. Kruy, chairman and chief executive officer of Cambex, stated.
"The most important considerations in large-scale DASD disk array purchasing today are high availability Also called "RAS" (reliability, availability, serviceability) or "fault resilient," it refers to a multiprocessing system that can quickly recover from a failure. There may be a minute or two of downtime while one system switches over to another, but processing will continue. , extended functionality and affordable cost-per-megabyte," Kruy said. "The Cascade Array DASD addresses those issues directly, during its initial introductory period, by being offered exclusively in a RAID-1 "fully mirrored" mode at a price of under $3 per megabyte for a fully configured array," he stated.
"We believe this solution will expand the size of the mainframe DASD market by making large capacity, risk-free storage more affordable -- without compromising DASD performance -- for emerging datawarehousing, imaging and analytical processing applications, and for applications currently relegated to tape or optical storage in which large capacity and fast access is desirable," Kruy commented.
The Cascade Array DASD system is fully compatible with IBM DASD and can be run behind the same IBM 3990 Storage Control units as IBM RAMAC (Random Access Method of Accounting and Control) The first hard disk computer, introduced by IBM in 1956. All 50 of its 24" platters held a total of five million characters! RAMAC was half computer, half tabulator. Array DASD or 3390 DASD units. In addition, the Cascade storage system makes use of all of the standard and extended functions that IBM provides through its storage controllers, thereby extending the useful life of the 3990 controllers.
The Cascade Array DASD is faster, more compact, more energy efficient and has up to three times the capacity of the IBM DASD products, at a fraction of the price. In an unmirrored mode, the Cascade Array DASD can store up to 544 gigabytes of data, which is equal to 272 gigabytes when in a RAID-1, or fully mirrored, mode.
Mirroring is the process of writing data separately and simultaneously to two independent sets of disks to assure a high level of data protection, or availability. Mirroring, while normally more costly than other RAID protection schemes, is considered a high performance and safe method of data storage.
The total compatibility of Cascade Array DASD with IBM 3990 Storage Control function adds important operating advantages not available on other non-IBM DASD products. These advantages include full access to ESCON (Enterprise Systems CONnection) An IBM S/390 fiber-optic channel that transfers 17 Mbytes/sec over distances up to 60 km depending on connection type. ESCON allows peripheral devices to be located across large campuses and metropolitan areas. or parallel channels, and to such advanced functions as DASD fast-write, dual copy, dynamic cache management, transient dual copy and concurrent dual copy. The product's operational transparency enables users to obtain error and performance reporting identical to IBM DASD systems.
Two versions of the Cascade Array DASD are available, the Model 3 which offers up to 90 gigabytes per unit, and the Model 3X which offers an extended capacity of 272 gigabytes per unit. The Cascade products are in beta test A test of new or revised hardware or software that is performed by users at their facilities under normal operating conditions. Beta testing follows alpha testing. Vendors of packaged software often offer their customers the opportunity of beta testing new releases or versions, and the at this time, with initial shipments of the Model 3 scheduled for June, and the Model 3X scheduled for August.
Matched to Three IBM Products The following is a list of products from the International Business Machines (IBM) Corporation and its predecessor corporations, beginning in the 1890s, and spanning punched card machinery, time clocks, and typewriters, via mainframe computers and minicomputers, to microprocessors, PCs,
Because Cascade arrays are the only non-IBM arrays to operate transparently as an attachment to IBM 3990 Storage Control units, they offer attractive alternatives to IBM RAMAC Array DASD in many applications, as well as to IBM 3390 Models 3 and 9 data storage units. Cascade arrays also substantially extend the life of IBM 3990 Storage Control units because they attach, alone or combined with IBM DASD strings, to those storage controllers.
The Cascade mirrored (RAID-1) Model 3X array, with usable capacity up to 272 GB, is an effective alternative to RAMAC Array DASD, especially in applications in which speed, capacity, cost and simplicity are preferred over RAID-5 type protection. The Cascade Model 3X array utilizes 9-gigabyte disk drives with a 5-1/4-inch form factor. This drive provides a variety of operating advantages over the IBM Model 3390-9 DASD as well: rotational latency rotational latency - The time for the start of the required sector on a disk to appear underneath the read/write head. The worst case is where it has just passed the head when the request is received. four times faster, and seek time twice as fast, yielding a total access time less than half that of IBM's Model 9 DASD -- in a footprint one-third the size.
The Cascade Model 3 array has 90GB capacity and the same or higher performance than IBM's 3390 Model 3 DASD for most applications. It utilizes 3-1/2 inch disk drives. The Model 3 is also fully mirrored, and has better cost/performance because of the more advanced technology utilized by Cambex. A Cascade array's footprint, heat and power consumption are approximately one-third those of a 3390-3. Thus, the Cascade Model 3 is well suited for use in a demanding real-time, mission-critical applications. Because of the mirrored design used in the Model 3, Cambex enables users to mirror a full 180GB behind a 3990 controller.
In each instance, Cambex Cascade arrays are priced far less, for equivalent or better performance, than the IBM DASD products they replace. For example, a fully populated A circuit board whose sockets are completely filled with chips. 90GB (mirrored) Cascade Array DASD Model 3 is priced at $345,000, compared to $530,000 for a 90GB RAID-5 RAMAC Array DASD. Similarly, a fully populated 272GB (mirrored) Cascade Array DASD Model 3X is priced at $795,000, which is comparable to 270 GB of RAID-5 RAMAC Array DASD priced at $1,590,000.
Datasequencing Architecture Adds Value
Cascade arrays are so-named because they embody an architecture call Datasequencing to achieve higher performance and availability with transparency in the IBM environment. The approach assures users that Cascade Array DASD will make use of the attributes of IBM software and controllers, now and as they are evolved by IBM, while at the same time providing performance advantages. Several Cascade advantages derived from Datasequencing are:
o Multi-level cache -- The Cascade array makes use of two series of cache memory systems, one in each disk drive, and another in each DASD controller card. This cylinder caching technique complements and extends the effectiveness of cache memory in the IBM 3990 Storage Control unit. In addition, it eliminates the often-serious "RPS misses" caused when large systems become overloaded.
o Contention avoidance -- The Cascade system provides full four-path DLSE (Data Level Selection enhancement) access to all volumes. Thus, any free path to the 3990 controller will be used, avoiding a major source of contention -- and potential performance degradation -- in environments with heavy user workloads.
Power protection-- Every Cascade system 1. (Elec.) A system or method of connecting and operating two induction motors so that the primary circuit of one is connected to the secondary circuit of the other, the primary circuit of the latter being connected to the source of supply; also, a system of electric , as standard features, provides a unique power protection sequence that includes hot-pluggable power supplies, fans and AC sources-- all of them fully redundant.
Data protection-- Each volume in a Cascade system is a separate physical drive protected with a series of predictive failure monitors and alarms, ISO (1) See ISO speed.
(2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI. 9000 quality standards and on-line diagnostics and support. In addition, the entire array can be protected by dual copy, transient dual copy and other data mirroring options. Each Cascade drive is also hot pluggable See hot swap. and can be serviced nondisruptively while the DASD array remains in full service.
Makes Use of All 3990 Features
A major attribute of Cascade array strings is their ability to support all standard and extended features, functions and flexibility provided by the IBM 3990 Storage Control Product family. The most important of these are: support for ESCON and parallel channels at all data rates, record or track level caching, dual copy data protection, remote dual copy, concurrent copy, transient dual copy to monitor the array, anticipate drive failure and automatically invoke a dual-copy spare volume, and DASD fast-write to enhance write performance. In addition, all IBM DFSMS (Data Facility Storage Management System) Data management, backup and HSM software from IBM for MVS and OS/390 mainframes. Introduced in 1993, it combines separate backup, copy, HSM and device driver routines into one package, which provides all the I/O features, including data set placement and migration, are automatically supported, as is the use of all MVS (Multiple Virtual Storage) Introduced in 1974, the primary operating system used with IBM mainframes (the others are VM and DOS/VSE). MVS is a batch processing-oriented operating system that manages large amounts of memory and disk space. , VM and other IBM operating system operating system (OS)
Software that controls the operation of a computer, directs the input and output of data, keeps track of files, and controls the processing of computer programs. procedures-- assuring that user investment in operator training is fully protected and utilized.
To assist users in applying DASD, Cambex systems specialists help user configure Cascade arrays and Cambex 3990 controller cache memory to optimize storage subsystem The part of a computer system that provides the storage. It includes the controller and disk drives. See storage system. performance for tasks from large batch jobs to real-time transaction processing Updating the appropriate database records as soon as a transaction (order, payment, etc.) is entered into the computer. It may also imply that confirmations are sent at the same time.
Transaction processing systems are the backbone of an organization because they update constantly. . As the only independent manufacturer of large system cache products, Cambex provides this performance optimization at the lowest cost.
Substantial Error Protection
Cascade systems are designed for superior performance in IBM environments. Parallel processing parallel processing, the concurrent or simultaneous execution of two or more parts of a single computer program, at speeds far exceeding those of a conventional computer. arrangement of the disk drives, multi-level caching, predictive failure analysis Predictive Failure Analysis (PFA) is a proprietary IBM technology for monitoring the likelihood of hard disk drives to fail. It was introduced in 1992 in IBM 0662-S1x drive (1052 MB Fast-Wide SCSI-2 disk at 5400 rpm), and was industry's first such technology. and Cascade volume sparing and redundancy assure a level of continuous availability not possible with earlier generations of disk subsystems.
The systems also use advanced design and componentry to support high availability. For example, the compact canister configuration of a Cascade array subsystem enables a user to swap out canisters, as well as to expand easily, withing the smallest footprint in the industry. Cambex also provides early warning at each level of a Cascade array string to assure early detection and to prevent failure of a critical component. In addition, redundant power and cooling, dual line cords and hot pluggable drives and electronics assure continuous availability of user data. Use of transient dual copy further enriches the predictive maintenance Predictive maintenance (PdM) techniques help determine the condition of in-service equipment in order to predict when maintenance should be performed. This approach offers cost savings over routine or time-based preventive maintenance because tasks are performed only when capability inherent in the products's design.
Superior Environmental Attributes
The Cascade Array DASD Model 3 uses a 3-1/2-inch disk drive with a formatted capacity of 2.86GB each and rotational speeds of either 5400 or 7200 RPM. The Cascade Array DASD Model 3X makes use of a 5-1/4-inch disk drive with 8.5GB formatted capacity and a rotational speed of 5400 RPM. Both are faster than the IBM devices they are intended to replace- in terms of latency and seek times and average transfer and response times.
In addition, the Cascade products have superior environmental features. Maximum capacity per square foot of floor space is 4.5GB for the Model 3 and 14.3GB for the Model 3X. Each product occupies only 19 square feet of floor space, which is up to three times less than other DASD products.
Power consumption ranges from 1.4 to 1.6 KVA (Kilo Volt-Amps) One thousand volt-amps. See volt-amps. per unit-- up to one-fourth the power needed by comparable IBM units. Heat generation is only 4.7 to 5.4 Kbtu/hour, which is up to six times less than some competitive DASD products.
Cambex Corporation (Nasdaq: CBEX CBEX China Beijing Equity Exchange ), headquartered in Waltham, Mass., has designed, manufactured and distributed a variety of direct access storage products for IBM's largest mainframe computers for over 25 years. The company is also the largest independent supplier of memory for IBM mainframes and RS/6000 systems, and RAID disk arrays and backup/restore products for the IBM RS/6000, SP2 and Sun computers and servers. -0- Note to Recipients: Cambex will hold a teleconference at 11:00 A.M. EDT EDT
Eastern Daylight Time
EDT Eastern Daylight Time
EDT n abbr (US) (= Eastern Daylight Time) → hora de verano de Nueva York
EDT Wednesday, April 12, to discuss this product launch. Please call 1-800-374 1394 at 10:55 A.M. if you wish to participate.
CONTACT: Cambex Corp.
Lou Finnegan, 617/890-6000, ext. 213