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Browse Prior Art Database

LSL (Low Speed Load/Unload)

IP.com Disclosure Number: IPCOM000014765D
Original Publication Date: 2000-Apr-01
Included in the Prior Art Database: 2003-Jun-20
Document File: 3 page(s) / 317K

Publishing Venue

IBM

Abstract

In Load/Unload (L/UL) devices, one challenge is to use the L/UL zone for writing/reading data. Currently, no drives use this real-estate for storing/retrieving data. One problem with writing/reading in this zone is thermal erasure of data caused by head/disk contacts that may occur during L/UL. This type of erasure can occur more frequently with glass disks. The potential for thermal erasure increases with the disk speed since the thermal heating increases with the disk speed. By loading/unloading at low disk speeds, the rise in temperature at the interface can be controlled and decreased as to avoid any thermal erasure of data (Figure 1). 1 Figure 1 2

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LSL (Low Speed Load/Unload)

In Load/Unload (L/UL) devices, one challenge is to use the L/UL zone for
writing/reading data. Currently, no drives use this real-estate for
storing/retrieving data. One problem with writing/reading in this zone is
thermal erasure of data caused by head/disk contacts that may occur during
L/UL. This type of erasure can occur more frequently with glass disks. The
potential for thermal erasure increases with the disk speed since the thermal
heating increases with the disk speed. By loading/unloading at low disk
speeds, the rise in temperature at the interface can be controlled and
decreased as to avoid any thermal erasure of data (Figure 1).

1

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Figure 1

2

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