In windows, the gpt format of the shared disk and disk in oracle rac is racgpt.

In windows, the gpt format of the shared disk and disk in oracle rac is racgpt.

The current disk is not worth the money. Therefore, a LUN mapped from the storage to the host may be very large.

Recently I encountered a problem: Two windows hosts should be used as rac, and a disk mapped to windows has a size of 10 TB. As we all know, the shared disk in oracle rac in windows corresponds to the concept of the extension partition in windows disk management, while the logical partition (logical partition) it cannot be created in the gpt partition format. In addition, when the 10 TB disk is converted to an mbr partition, the maximum disk capacity supported by the mbr partition is 2 TB. In this case, the remaining 8 TB is in vain. Therefore, the compromise is to allow storage engineers to map 5 Luns to windows hosts, with each LUN 2 TB in size.