RZ25M 535MB SCSI Disk Drive HIGHLIGHTS o High performance 535 MB SCSI 3.5-inch x 1-inch drive. o Replacement drive for RZ25L 535 MB SCSI drive o Thirty percent price improvement and 50 percent less power consumption than the RZ25L drive o Fifty percent greater MTBF (Mean Time Between Failure) than the RZ25L drive PRODUCT DESCRIPTION The RZ25M disk drive is a 535 MB 3.5-inch x 1-inch SCSI-2 hard disk drive that replaces the RZ25L disk drive. (See the Retirements section in this issue.) The RZ25M drive is priced at 30 percent less than the RZ25L drive and consumes half the power. It also has 50 percent greater reliability than the RZ25L drive, while maintaining the same high performance characteristics as the RZ25L drive. The RZ25M disk drive is compatible with SCSI-2 single-ended 8 bit interface standards. BENEFITS Users requiring lower cost per MB, low power consumption, highly reliable, high performance disk drives will find these attributes in the RZ25M drive. The RZ25M disk drive is the replacement drive of choice for the RZ25L drive and has been qualified across a broad range of Digital VAXstation and AlphaStation systems. AVAILABILITY AND ORDERING The RZ25M SCSI-2 hard disk drive is available now through Digital, its authorized distributors, and the DECdirect ordering and Electronic Store services. These models are for use on Digital hardware platforms only. Order No. Description RZ25M-xx RZ25M 535 MB SCSI-2 Disk Drive, Factory and Field-installed with Mounting Hardware SERVICES Warranty The standard list price for the RZ25M drive includes the new five-year warranty, which provides a one-year onsite warranty and four years of extended return-to-Digital warranty. TECHNICAL DATA System Support The RZ25M disk drive is immediately supported on the following hardware platforms: System Factory Field MicroVAX 3100/VAX 4100 RZ25M-EN RZ25M-EK DEC 3000 Models 400/500/600/700/800/900 RZ25M-EJ RZ25M-EJ DEC 3000 Models 300/300L/300X/300LX RZ25M-EP RZ25M-EP VAXstation 60/90/90A/96 RZ25M-EM RZ25M-EL AlphaStation platforms PBXRZ-CA PBXRZ-CA (There is no -VA variant for this product.) OS Support The RZ25M disk drive is supported by OpenVMS V6.1-1H2, DEC OSF/1 V3.0B/3.2, and Windows NT V3.5 operating systems. Technical Summary The RZ25M disk drive is a four-head, two-platter drive compared to the seven-head, four-platter RZ25L disk drive. Incorporating a slightly larger buffer size and highly efficient firmware, the RZ25M drive maintains the same high performance characteristics as the RZ25L drive, while spinning at a slower, energy saving, rotational speed. RZ25M RZ25L Form factor 3.5 inches x 1 inch 3.5 inches x 1 inch Capacity 535 MB 535 MB RPM 4,500 5,400 Average seek time (ms) 12.0 10.5 Media transfer rates 3.4 - 7.2 5.3 (MB per second) MTBF (Mean Time Between 300,000 hours 200,000 hours Failure) __________ OSF/1 is a registered trademark of the Open Software Foundation, Inc. Windows NT is a trademark of Microsoft Corporation.