WRITE_CACHE_TYPE - NtDoc
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// ntddstor.h
typedef enum _WRITE_CACHE_TYPE {
WriteCacheTypeUnknown,
WriteCacheTypeNone,
WriteCacheTypeWriteBack,
WriteCacheTypeWriteThrough
} WRITE_CACHE_TYPE;
View the official Windows Driver Kit DDI reference// winioctl.h
typedef enum _WRITE_CACHE_TYPE {
WriteCacheTypeUnknown,
WriteCacheTypeNone,
WriteCacheTypeWriteBack,
WriteCacheTypeWriteThrough
} WRITE_CACHE_TYPE;
View the official Win32 API referenceNo description available.
The WRITE_CACHE_TYPE enumeration specifies the cache type.
WriteCacheTypeUnknownThe system cannot report the type of the write cache.
WriteCacheTypeNoneThe system cannot report the type of the write cache.
WriteCacheTypeWriteBackThe device has a write back cache.
WriteCacheTypeWriteThroughThe device has a write through cache.
There are two main types of write cache: write back and write through. With a write-back cache, the device does not copy cache data to nonvolatile media until absolutely necessary. This type of operation improves the performance of write operations. With a write-through cache, the device writes data to the cache and the media in parallel. This type of operation does not improve write performance, but it makes subsequent read operations faster.
The IOCTL_STORAGE_QUERY_PROPERTY request reports a WRITE_CACHE_TYPE value in the STORAGE_WRITE_CACHE_PROPERTY structure.
Specifies the cache type.
WriteCacheTypeUnknownThe system cannot report the type of the write cache.
WriteCacheTypeNoneThe device does not have a write cache.
WriteCacheTypeWriteBackThe device has a write-back cache.
WriteCacheTypeWriteThroughThe device has a write-through cache.
There are two main types of write cache: write back and write through. With a write-back cache, the device does not copy cache data to nonvolatile media until absolutely necessary. This type of operation improves the performance of write operations. With a write-through cache, the device writes data to the cache and the media in parallel. This type of operation does not improve write performance, but it makes subsequent read operations faster.
The IOCTL_STORAGE_QUERY_PROPERTY control code reports a WRITE_CACHE_TYPE value in the STORAGE_WRITE_CACHE_PROPERTY structure.