Browse Prior Art Database

Removable and Transportable DASD

IP.com Disclosure Number: IPCOM000102393D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 69K

Publishing Venue

IBM

Related People

Bolton, IW: AUTHOR [+5]

Abstract

Described is a disk file module designed to operate as a Customer Replaceable Unit (CRU) when plugged into a chassis receptacle in the user system. It provides the customer with a removable transportable DASD unit which, when installed, automatically makes electrical and cooling air connections, and presents an operator panel.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 68% of the total text.

Removable and Transportable DASD

       Described is a disk file module designed to operate as a
Customer Replaceable Unit (CRU) when plugged into a chassis
receptacle in the user system.  It provides the customer with a
removable transportable DASD unit which, when installed,
automatically makes electrical and cooling air connections, and
presents an operator panel.

      The construction contains two field replaceable units (FRUs):
a sealed head/disk assembly (HDA) and its controller card.  Internal
shock proof mounts protect the HDA from vibration.  Suppression of
EMC, RFI and acoustic noise is accounted for in the design together
with cooling and manufacturing advantages.  Each CRU is independent
from others for operation and service.

      The figure shows an HDA 3, mounted on four shock and vibration
absorbers 4 to two body ends 1.  The structure is strengthened by the
addition of cover 6 which encloses top, bottom and both ends 1.
Further support is added by both side covers 2 when screwed into
cover 6.  Covers 2 and 6 interlock with body ends 1 for efficient RFI
suppression.

      A printed circuit (PCB) control card 5 is screwed to cover 6
and adjacent side 2.  Access to an edge connector 12 fitted to PCB 5
is provided by an aperture in the enclosure to enable self-aligning
electrical connections to be made to the external user system.  PCB
connector 12 is screwed to cover 6 through the PCB 5, to withstand
plugging/unplugging mechanical...