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Compaq Tandem 5194 and 5194ACL (5196 AND 5196ACL) The Compaq 5194 high-performance tape cartridge subsystem supports the efficient 36-track recording format and an extended-length cartridge that can contain double the amount of tape (335.4 meters, or 1,100 feet) of standard cartridges—doubling the storage capacity per cartridge to approximately 1.6 gigabytes (assuming 2:1 data compression). With these capabilities, the 5194 can store 400 percent more data per cartridge than a 5190 subsystem. The 5194 is also backward read compatible with Compaq’s 5180 and 5190 subsystems, meaning it can read cartridges written in 18-track format, but writes only in 36-track recording format. The state-of-the-art electronics used in the 5194 subsystem enable it to be contained within a standard half-rack form-factor size. The 5194 is a complete customer-replaceable unit (CRU), consisting of a tape formatter, one cartridge drive, and a power supply. Optionally, the 5194 can include an internally mounted seven-cartridge ACL (automatic cartridge loader). The internal design eliminates the external cartridge magazine common to other storage products. The single-drive design of the 5194 lowers the cost of storage for systems that do not require two or more drives. High reliability Extensive use of VLSI components in the 5194 has reduced the number and size of parts used. With this much reduced component count and its single-drive design, the 5194 promises to be one of the most reliable tape cartridge subsystems that Compaq has ever offered. High performance The 5194 uses a 36-track recording format, which can record in both directions (serpentine recording). One 18-track set records data from the beginning of the tape to the end of the tape. Then, rather than rewind, the tape uses its second 18-track set to record from the end of the tape back to the beginning. In this way, one minute of rewind time is saved per recording pass. So, while both the 5194 and 5190 subsystems have a data-transfer rate of 3 megabytes per second*, the 5194 can run your jobs faster because it eliminates wasted rewind time. Thus, for processing large files, the 5194 provides the best performance. Integration with the Modular Storage System The 5194 is part of Compaq’s Modular Storage System family of storage products. The Modular Storage System is an innovative storage packaging system that lets you mix disks and tape devices for Compaq NonStop™ Himalaya™ K-series and S-series servers in the amount of space normally occupied by a single-purpose cabinet. The internally designed ACL of the 5194 allows you to stack up to three modules in a single Modular Storage System stack. A single stack can contain from one to six subsystems in only 0.57 square meters (6.3 square feet) of floorspace. You can also mix 5190 and 5194 subsystems in a module or in a stack, providing packaging density and flexibility unequaled in the industry. High-capacity media storage The 36-track recording format of the 5194 supports a new extended-length cartridge containing double the amount of tape (335.4 meters, or 1,100 feet) of standard cartridges and doubling the storage capacity per cartridge. The 5194 can also use the same data recording media as the 5190, but the storage capacity potential will not be fully realized. Additionally, the 5194 supports data compression that is compatible with IBM’s Improved Data Recording Capability (IDRC). Data compression increases the effective capacity of a cartridge by 2 to 5 times, depending on the type of data being compressed and the block size. Small blocks tend to yield a higher compression ratio because the “auto blocking” function records all data into large blocks, reducing the number of inter-block gaps required to separate normal data. Alphanumeric data with repeated characters and blank spaces also yields a high compression ratio. Data such as binary objects containing seismic data does not compress at all. Most “average” data should yield a 2 to 3 times compression ratio, so that the storage capacity of an extended-length data cartridge can be from 1,600 to 2,400 megabytes. The table reflects the nominal storage capacity as advertised by most media suppliers, assuming a 24-kilobyte block size and quality media. These capacities are, however, affected by the length and quality of the cartridge media as well as the data compression.
Typically, a single 5194 with a seven-cartridge ACL can record between 11.2 and 16.8 gigabytes, without operator intervention. This is a 400 percent improvement compared with the 5190. Automated operations The design of the 5194 facilitates its operation in several ways. The seven-cartridge ACL and data compression greatly extend the intervals between operator intervention. The ACL has a stationary storage magazine and there are no moving parts outside of the drive CRU. In addition, the ACL includes a “picker” to transfer cartridges from the magazine to the drive and vice versa. Once all the cartridges are processed, the operator can remove the magazine and either reload it or insert a preloaded magazine. If you use multiple magazines, the data cartridges can be stored in their magazines to eliminate additional handling. Cleaning the drives is easy. The 5194 subsystem equipped with an ACL contains a separate storage slot for a cleaning cartridge (it is not stored in the ACL’s magazine). When the tape subsystem requires cleaning, the cleaning cartridge is automatically selected, loaded into the drive where it is used for cleaning, and then returned to its separate storage slot. Low cost of ownership The 5194 is designed to reduce your cost of ownership, which includes not only purchase price, but also warranty, maintenance, media, floorspace, and operator costs. The high reliability of the 5194 means that fewer jobs need to be rerun because of subsystem failures. And with its high performance and automation, there are virtually no system delays waiting for tapes to be mounted. Data compression means fewer data cartridges, less space required to store them, and lower staffing costs to manage them. Data interchange is simplified for machines that can process 36-track media. Maintenance costs for the 5194 are greatly reduced because it is a customer-replaceable unit that does not require special preventive maintenance. Configuration flexibility The 5194 subsystem can be connected to Compaq NonStop™ Himalaya K-series servers via the 3216 fiber-optic tape controller or multifunction controller (MFC). It can be connected to S-series servers using either a Compaq ServerNet™/DA adapter (SCSI or fiber) or a processor multifunction (PMF) SCSI port. The 3216 controller and ServerNet/DA adapter use improved fiber optics so that cable lengths from 10 meters (33 feet) to 2 kilometers (1.24 miles) are supported. Connection to K-series servers using the MFC is via SCSI copper cables and a 5165-1 SCSI backplane interconnect card (BIC). An MFC connection supports 3-meter (10-foot) and 7.6-meter (25-foot) SCSI cables. The 5194 can be used for “Tape Boot” and “Tape Dump” when connected to the MFC in systems designed for the MFC. Connection to S-series servers using a PMF SCSI port or a ServerNet/DA SCSI card requires standard 68-pin SCSI cables that can be up to 23 meters (75 feet) in length. Because the 5194 offers such flexible cabling options, you can locate tape operations outside the computer room, enabling “lights out” computer operations. Additional configuration flexibility is provided because the 5194 can be stacked with various disk devices in the Modular Storage System. IBM 3490E and STK 4490/9490 compatibility The 5194 is fully media compatible (for reading and writing data) with IBM 3490E and StorageTek (STK) 4490/9490 36-track subsystems as well as several IBM plug-compatible manufacturers that support the IBM 3490E recording format. These subsystems are able to read cartridges written in 18-track format, but write only in the 36-track mode. The 5194 makes an excellent companion drive for those sites that already have the STK 4400 Automated Cartridge System (ACS) installed on their Compaq NonStop™ systems. The 5194 can easily perform ad hoc jobs that need to be done outside of the silo, as well as supporting Tape Boot and Tape Dump functions. Do you see the tape drive that you are looking for? If so please contact us at 800-663-5523 or click here. If you can't seem to find your drive, please click here? Ordering information Configuration information When connected to Compaq NonStop™ Himalaya K-series servers, 5194 subsystems attach to the optional 3216 fiber-optic host controller or MFC. Each 3216 is shipped with a 10-meter (33-foot) fiber-optic cable as the default. The following fiber-optic cables can be ordered from Compaq. (All other fiber-optic cable lengths must be supplied by the installation contractor.)
To connect a 5194 to a Compaq MFC (for K-series server), a 5165-1 SCSI BIC and SCSI cable must be ordered. The maximum cable length supported by the MFC is 7.6 meters (25 feet). The following SCSI cables may be ordered from Compaq:
Cable information for connecting to S-series servers is contained in the ServerNet/DA product description. Ordering information
Each ACL includes one cartridge magazine. Additional magazines are available (product ID 519M) for an additional cost. Each new subsystem includes one data cartridge and one cleaning cartridge. Compaq does not sell cartridges. One or two 5194 subsystems can be installed in a single Modular Storage System module and three 5194 modules can be installed in a single Modular Storage System stack, enabling one to six 5194 subsystems per stack. To install the 5194 in a new Modular Storage System stack, one 7150 or 7159 pedestal must be ordered for each stack. The 5194 can be placed in position B, C, or D only. A 7158 frame can be ordered to elevate the 5194 module from position B to position C if a higher operational position is desired. Refer to the Modular Storage System product description for more configuration details. Do you see the tape drive that you are looking for? If so please contact us at 800-663-5523 or click here. If you can't seem to find your drive, please click here?
For a single-drive system, a 5196 should be ordered. If two subsystems (CRUs) are required and are to be installed in a single Modular Storage System module, then both a 5196 and a 5194 should be ordered. These two subsystems can share the same 3216 controller (K-series) or ServerNet/DA adapter (S-series), or they can be attached to separate 3216 controllers, ServerNet/DA adapters, MFCs, or PMF units. If they are attached to separate controllers, the daisy-chain cable is not used. Each fiber-optic tape controller or adapter can support one or two 5194 subsystems. To accommodate the two-subsystem configuration, a daisy-chain cable that serially connects the two 5194 subsystems is shipped with all 5194 or 5194ACL CRU orders. When two 5194 subsystems are attached to a single controller or adapter in this fashion, there is no performance advantage; however, this configuration works well when drive availability is the main criteria. When performance is the main requirement, configure one 5194 per 3216 or ServerNet/DA. A 5194 should never be ordered as the primary subsystem. It is to be used only as the second CRU in a module, with the 5196 as the primary subsystem. If both a 5196 and a 5194 are ordered on the same system order, the 5194 will be installed into the 5196 module in the factory. The minimum system software requirement for the 5194 and 5196 is Release D30.01.99 or later for Compaq NonStop™ Himalaya K-series servers and Release G20 or later for S-series servers. Product IDs and descriptions 5194 36-track cartridge tape
subsystem, CRU only 5196ACL 36-track cartridge
tape subsystem, ACL-equipped CRU packaged in a Modular Storage System module 5196 36-track cartridge tape
subsystem, CRU packaged in a Modular Storage System module 5193 Automatic cartridge loader (ACL) field upgrade kit 3216 or ServerNet/DA Fiber-optic host tape controller or
device adapter 5165-1 (for K-series) 519M Service and support
Simplified maintenance The entire 5194 or 5194ACL is a CRU. When service is required, the entire CRU is replaced, greatly simplifying maintenance. Care must be exercised when installing or replacing 5194 CRUs as they are very heavy. A 5194ACL CRU weighs 33.75 kilograms (75 pounds) and a 5194 weighs 22.5 kilograms (50 pounds). Do you see the tape drive that you are looking for? If so please contact us at 800-663-5523 or click here. If you can't seem to find your drive, please click here? Customer installation
Do you see the tape drive that you are looking for? If so please contact us at 800-663-5523 or click here. If you can't seem to find your drive, please click here? | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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