disk space usage 磁盘空间占用
file system overhead 文件系统开销
metadata overhead 元数据开销
storage overhead 存储开销
disk management 磁盘管理
1. The disk overhead is quite significant for very small files.
对于非常小的文件，磁盘开销相当大。
2. We need to minimize the disk overhead to optimize storage efficiency.
我们需要最小化磁盘开销以优化存储效率。
3. High disk overhead can lead to reduced usable capacity.
高额的磁盘开销会导致可用容量减少。
A: Why is the available space less than the total capacity?
A：为什么可用空间比总容量要小？
B: It is mainly due to the disk overhead required by the file system.
B：这主要是由于文件系统所需的磁盘开销造成的。
1) 指由于存储管理而产生的额外空间消耗
2) 指在进行磁盘I/O操作时产生的额外计算开销
3) 指文件系统中用于存放索引和元数据的部分
1. 磁盘开销：存储管理所需的额外空间或资源。
e.g.
The system calculates the disk overhead automatically.
系统会自动计算磁盘开销。
noun phrase
1. The extra space or resources required by a disk system for management, metadata, and structural purposes.
Synonym: storage overhead, filesystem overhead