| Term | Definition |
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| Disk group: | Collection of data, volumes, and associated parts (subdisks, plexes, and vmdisks). | | Volume: | Virtual partition on which filesystems are created or databases operate. | | Data plex: | 1 copy of the data. | | Log plex: | Logging information for volumes (RAID 5 or DRL). Displayed with a double border. | | Subdisks: | Contiguous regions on a disk. 4096 is the limit on the number of subdisks per physical volume. Don't do that. | | VM Disks: | Public region of a physical disk. |
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