| title | description | author | ms.author | ms.date | ms.service | ms.subservice | ms.topic | helpviewer_keywords | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Server configuration: affinity64 I/O mask |
Learn about the affinity64 I/O mask option. See when to use it to bind SQL Server disk I/O to a specified subset of CPUs. |
rwestMSFT |
randolphwest |
07/18/2024 |
sql |
configuration |
conceptual |
|
[!INCLUDE SQL Server]
The affinity64 I/O mask binds [!INCLUDE ssNoVersion] disk I/O to a specified subset of CPUs, similar to the affinity I/O mask option. Use affinity I/O mask to bind the first 32 processors, and use affinity64 I/O mask to bind the remaining processors on the computer. If you reconfigure the affinity64 I/O mask, you must restart the instance of [!INCLUDE ssNoVersion]. This option is only visible on the 64-bit version of [!INCLUDE ssNoVersion].