Browse Prior Art Database

Write cache performance improvement by suppressing automatic data transfer

IP.com Disclosure Number: IPCOM000014297D
Original Publication Date: 2001-Feb-01
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 27K

Publishing Venue

IBM

Abstract

Disclosed is a method to improve the hard disk (HDD) performance by efficient uses of sector buffer. If the such as following write commands are isseued Write LBA 1 Length 3 1.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Write cache performance improvement by suppressing automatic data transfer

Disclosed is a method to improve the hard disk (HDD) performance
by efficient uses of sector buffer.

If the such as following write commands are isseued

Write LBA 1 Length 3


1.


2.

data transfer request does not automatically set in this method.
Hardware logic does this judgement.

In traditional way (Data transfer request automatically set),
transfered data is stored on the sector buffer as follows

+-------+-------+-------+-------+

|LBA1|LBA2|LBA3|LBA2|
+-------+-------+-------+-------+

(old) (new)

Our new method can be set the start position by firmware, so the
transfered data can overwrite the old data.

+-------+-------+-------+

|LBA1|LBA2|LBA3|
+-------+-------+-------+

(new)

We can reduce the sector buffer usage, consequentry HDD
performance is also improved.

Write LBA 2 Length 1

1