Monday, May 09, 2011

Windows 7: Advanced Format Disks Update

This topic is a more advanced then I generally discuss in this blog, but I am hoping it might be able to help some people whom might be using this technology.

Microsoft has release an update to improve Advanced Format Disks compatibility in the latest versions of Windows 7 (SP1) and Server 2008 R2 (SP1). The Advanced Format Disk is utilized when the physical media has been formatted with 4,096 bytes (4K) sector size, rather then the conventional 512 byte sector size.

The Advanced Format technology is more efficient for storing large files such as video files or large photographs stored in the RAW format. Another advantage of this technology is that it supports stronger error correction algorithms.

Not all application natively support writes based on 4 KB sectors to the physical media, so compatibility can come at the cost of performance and reliability based on the system workload and hardware implementation.

For individuals and organizations that utilize applications that can only use 512-byte Logical Block Addressing (known as “512-byte emulation disks” or “512e”) while leveraging a 4KB sector size on the physical media can download an update (KB 982018) from Microsoft to improve performance, reliability, and general interoperability of the Advanced Format Disks technology.

(See the KB 982018 for more information)

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