RF35 - Revision history

Jnc: /* External links */ Manx mirror of Antonio's stuff is gone

2026-10-11T21:51:29Z

External links: Manx mirror of Antonio's stuff is gone

← Older revision		Revision as of 21:51, 11 October 2026
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	==External Links==		==External Links==

	* [https://~~manx-docs~~.~~org~~/~~collections~~/antonio~~/dec~~/rf72dug7.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-007)		* [https://vt100.net/mirror/antonio/rf72dug7.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-007)
	* [https://decdoc.itsx.net/dec94mds/rf72dug8.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-008)		* [https://decdoc.itsx.net/dec94mds/rf72dug8.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-008)
	* [https://www.computerhistory.org/collections/catalog/102768242 RF35 in the collection of the Computer History Museum]		* [https://www.computerhistory.org/collections/catalog/102768242 RF35 in the collection of the Computer History Museum]

Jnc: Add some links

2023-11-20T11:21:06Z

Add some links

← Older revision		Revision as of 11:21, 20 November 2023
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	}}		}}

	The RF35 is a [[Digital Storage Systems Interconnect\|DSSI]] hard drive produced by Digital Equipment Corporation from about 1991. This is called an Integrated Storage Element (ISE), which combines the Head-disk assemblies (HDA) and a controller with [[Mass Storage Control Protocol\|MSCP]] server. The MSCP server allows the disk to queue I/O requests from multiple hosts at a time. One of the use cases for this feature is to provide storage to a [[VAXcluster]] made of small systems like the MicroVAX.		The '''RF35''' is a [[Digital Storage Systems Interconnect\|DSSI]] hard drive produced by [[Digital Equipment Corporation]] from about 1991. This is called an 'Integrated Storage Element' (ISE), which combines the Head-disk assemblies (HDA) and a controller with [[Mass Storage Control Protocol\|MSCP]] server. The MSCP server allows the disk to queue I/O requests from multiple hosts at a time. One of the use cases for this feature is to provide storage to a [[VAXcluster]] made of small systems like the [[MicroVAX]].

	The drive uses a 50-pin DSSI interface and a 5-pin Molex power connector, providing access to 852 MB of storage. There are 7 platters, each with 2 heads, for a total of 14 data surfaces and ~60MB per surface. The disk geometry is 14 tracks, 2,086 cylinders, 58 sectors per track (including 1 replacement sector).		The drive uses a 50-pin DSSI interface and a 5-pin Molex power connector, providing access to 852 MB of storage. There are 7 platters, each with 2 heads, for a total of 14 data surfaces and ~60MB per surface. The disk geometry is 14 tracks, 2,086 cylinders, 58 sectors per track (including 1 replacement sector).
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	The [[RF31T]] is a lower-capacity version of the RF35, but with an improved seek rate.		The [[RF31T]] is a lower-capacity version of the RF35, but with an improved seek rate.

	{{stub}}		{{semi-stub}}

	==External Links==		==External Links==

	* [https://manx-docs.org/collections/antonio/dec/rf72dug7.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-007)		* [https://manx-docs.org/collections/antonio/dec/rf72dug7.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-007)
	* [https://decdoc.itsx.net/dec94mds/rf72dug8.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-008)		* [https://decdoc.itsx.net/dec94mds/rf72dug8.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-008)

Flx: expand page based on DEC docs EK-RF72D-UG-007

2023-11-20T06:05:59Z

expand page based on DEC docs EK-RF72D-UG-007

← Older revision		Revision as of 06:05, 20 November 2023
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	\| physical size = 3.5" half height		\| physical size = 3.5" half height
	}}		}}

			The RF35 is a [[Digital Storage Systems Interconnect\|DSSI]] hard drive produced by Digital Equipment Corporation from about 1991. This is called an Integrated Storage Element (ISE), which combines the Head-disk assemblies (HDA) and a controller with [[Mass Storage Control Protocol\|MSCP]] server. The MSCP server allows the disk to queue I/O requests from multiple hosts at a time. One of the use cases for this feature is to provide storage to a [[VAXcluster]] made of small systems like the MicroVAX.

			The drive uses a 50-pin DSSI interface and a 5-pin Molex power connector, providing access to 852 MB of storage. There are 7 platters, each with 2 heads, for a total of 14 data surfaces and ~60MB per surface. The disk geometry is 14 tracks, 2,086 cylinders, 58 sectors per track (including 1 replacement sector).

			The disk controller contains a [[Motorola M68000 Family\|MC680x0]] microprocessor, RAM, and NVRAM. A number of diagnostic and utility programs are available to the controller. At startup, there is a POST test and diagnostics continue executing periodically while the disk runs. In addition to error codes visible via the diagnostic programs, the disk has an amber-colored Fault LED.

			The [[RF31T]] is a lower-capacity version of the RF35, but with an improved seek rate.

	{{stub}}		{{stub}}

			==External Links==
			* [https://manx-docs.org/collections/antonio/dec/rf72dug7.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-007)
			* [https://decdoc.itsx.net/dec94mds/rf72dug8.pdf RF Series Integrated Storage Element User Guide] (EK-RF72D-UG-008)
			* [https://www.computerhistory.org/collections/catalog/102768242 RF35 in the collection of the Computer History Museum]

	[[Category: DSSI Disk Drives]]		[[Category: DSSI Disk Drives]]
	[[Category: DEC Non-removable-media Disks]]		[[Category: DEC Non-removable-media Disks]]

Vaxorcist: New page "RF35"

2023-08-18T09:53:54Z

New page "RF35"

New page

{{Infobox Disk drive
| name = RF35
| manufacturer = [[Digital Equipment Corporation]]
| controller = all [[Digital Storage Systems Interconnect#Family of DSSI Products|DSSI Controllers]]
| capacity = 852 Mbytes (formatted)
| transfer rate = 4.0 Mbytes/sec
| average access time = 15.1 msec
| average seek = 9.5 msec
| start time = < 30 sec
| stop time = < 15 sec
| physical size = 3.5" half height
}}

{{stub}}

[[Category: DSSI Disk Drives]]
[[Category: DEC Non-removable-media Disks]]