Administrator Guide

ManualsBrandsDell ManualsComputer HardwarePowerVault MD3420

Chapter 1: Introduction.................................................................................................................. 12

Dell EMC PowerVault Modular Disk Storage Manager................................................................................................... 12

User interface....................................................................................................................................................................... 12

Enterprise management window........................................................................................................................................13

Inheriting the system settings.......................................................................................................................................13

Array management window................................................................................................................................................ 13

Dell EMC PowerVault Modular Disk Configuration Utility...............................................................................................14

Related documentation....................................................................................................................................................... 14

Chapter 2: About your MD Series storage array................................................................................16

Physical disks, virtual disks, and disk groups.................................................................................................................... 16

Physical disks.................................................................................................................................................................. 16

Physical disk states........................................................................................................................................................ 16

Virtual disks and disk groups......................................................................................................................................... 17

Virtual disk states........................................................................................................................................................... 17

Disk pools.............................................................................................................................................................................. 18

Thin virtual disks...................................................................................................................................................................18

RAID levels............................................................................................................................................................................ 18

Maximum physical disk support limitations................................................................................................................. 18

RAID level usage............................................................................................................................................................. 18

RAID 0..............................................................................................................................................................................19

RAID 1...............................................................................................................................................................................19

RAID 5..............................................................................................................................................................................19

RAID 6..............................................................................................................................................................................19

RAID 10............................................................................................................................................................................ 19

Segment size........................................................................................................................................................................ 19

Virtual disk operations.........................................................................................................................................................20

Virtual disk initialization................................................................................................................................................. 20

Consistency check........................................................................................................................................................ 20

Media verification.......................................................................................................................................................... 20

Cycle time.......................................................................................................................................................................20

Virtual disk operations limit...........................................................................................................................................20

Disk group operations.......................................................................................................................................................... 21

RAID level migration....................................................................................................................................................... 21

Segment size migration................................................................................................................................................. 21

Virtual disk capacity expansion..................................................................................................................................... 21

Disk group expansion..................................................................................................................................................... 21

Disk group defragmentation..........................................................................................................................................21

Disk group operations limit............................................................................................................................................ 21

RAID background operations priority................................................................................................................................ 22

Virtual disk migration and disk roaming.............................................................................................................................22

Disk migration.................................................................................................................................................................22

Disk roaming................................................................................................................................................................... 23

Host server-to-virtual disk mapping............................................................................................................................23

Contents

Contents 3