Browse Prior Art Database

Server HDD unit cooling system

IP.com Disclosure Number: IPCOM000146937D
Original Publication Date: 2007-Feb-28
Included in the Prior Art Database: 2007-Feb-28
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Abstract

Disclosed a server HDD ( Hard Disk Drive ) unit cooling system used in a space limited box that cannot use regular heat-sinks or heat-spreaders. The structure is a cooling column that able to absorb vibration of the HDD unit, and transfer the forced air temperature to the heated semiconductor package on its surface.

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Server HDD unit cooling system

IBM's Blade Server assembles units that have 3 HDD aligned in series from the cooling air entrance. But the HDD maximum heat area could not receive direct air contact, because of depth of the unit system design as shown in figure 1. Usually heat-sinks or heat-speaders are attached as a heat solution for semiconductor packages, but for HDD unit case following concern becomes critical.
(1) HDD vibration which may affect to the heat-sink adhesive attach
(2) Heat-sink drop when HDD units are set vertically

[ Figure 1 ]

[ Figure 2 ]

The disclosed is a system of a Cu cooling post as shown in figure 3. The structure is having an elastomer material on the top ( brown area ) and an adhesive material ( blue area ) to be attached on the HDD unit chassis inner surface as shown in figure 4. This Cu cooling post has functions to (1) transfer cooling air temperature directly to the heated semiconductor package on the HDD card, (2) absorb HDD vibration by the elastomer material, (3) absorb HDD or semiconductor package height tolerance by the elastomer material, (4) placement flexibility to attach regardless to HDD model difference which has varieties of semiconductor package locations, and (5) able to set the unit horizontally for vertically. To have a higher thermal conductivity than direct attach method, thermal grease could be...