公开(公告)号：US20230064693A1

公开(公告)日：2023-03-02

申请号：US17410673

申请日：2021-08-24

Applicant: VMware, Inc.

Inventor： Wenguang WANG ,  Long YANG ,  Maxime AUSTRUY ,  Matthew B. AMDUR ,  Eric KNAUFT

IPC: G06F12/0804 ,  G06F16/22 ,  G06F12/1009

Abstract: The disclosure herein describes storing data using a capacity data storage tier and a smaller performance data storage tier. The capacity data storage tier includes capacity data storage hardware configured to store log-structured leaf pages (LLPs), and the performance data storage tier includes performance data storage hardware. A virtual address table (VAT) includes a set of virtual address entries referencing the LLPs. A tree-structured index includes index nodes referencing the set of virtual address entries of the VAT. Data to be stored is received, and at least a first portion of metadata associated with the received data is stored in the LLPs using the VAT, and at least a second portion of metadata associated with the received data is stored in the performance data storage tier. The architecture reduces space usage of the performance data storage tier.