Dell PowerVault MD3620i User Manual

Planning: MD3600i Series Storage Array Terms and Concepts 39
If a disk drive rebuild fails because of a source drive failure or because the
drive is too small, the MDSM reports a failure of the physical disk even
though the LED state on the drive indicates that the rebuild was aborted
(green for 3 seconds, amber for 3 seconds, then off for 3 seconds).
Self-Monitoring Analysis and Reporting Technology
SMART monitors the internal performance of all physical disk components to
detect faults indicating the potential for physical disk failure. SMART uses
this information to report whether failure is imminent so that a physical disk
can be replaced before failure occurs. The storage array monitors all attached
drives and notifies you when a predicted failure is reported by a physical disk.
Virtual Disks and Disk Groups
When configuring a storage array, you must:
1
Organize the physical disks into disk groups.
2 Create virtual disks within these disk groups.
Pending
Failure
Assigned,
Unassigned,
Hot Spare in
use, or Hot
Spare Standby
A Self-Monitoring Analysis and
Reporting Technology (SMART) error
is detected on the physical disk in the
indicated slot.
Green flashing
(500 ms), amber
(500 ms), and Off
(1000 ms)
Offline Not applicable The physical disk has either been spun
down or had a rebuild aborted by user
request.
Green flashing
(3000 ms), amber
(3000 ms), and
Off (3000 ms)
Identify Assigned,
Unassigned,
Hot Spare in
use, or Hot
Spare Standby
The physical disk is being identified. Green flashing
(250 ms)
N/A N/A The indicated slot is empty, or the
array cannot detect the physical disk.
Table 4-1. RAID Controller Physical Disk States
(continued)
Status Mode Description Physical Disk
Status LED
book.book Page 39 Tuesday, September 27, 2011 3:13 PM

Dell PowerVault MD3620i Specifications

General

Form Factor	2U
Host Interfaces	iSCSI
Maximum Raw Capacity	192 TB
Supported Drives	SAS, SATA
RAID Levels	0, 1, 5, 6, 10, 50, 60
Host Interface	iSCSI
Processor	Intel Xeon
Drive Bays	24 x 2.5-inch
Cooling	Redundant, hot-swappable fans
Controller	Dual controllers
Cache Memory	Up to 4 GB per controller
Host Ports	4 x 1GbE iSCSI
Management Interface	Web GUI, CLI
Operating Temperature	10° to 35°C (50° to 95°F)

Summary

1 Introduction

About This Document

Familiarizes you with the functions of the Dell PowerVault MD3600i Series storage array.

MD3600i Series Storage Array

Details the components and capabilities of the MD3600i Series storage array.

2 Planning: About Your Storage Array

Overview

Describes the design and capabilities of the Dell PowerVault MD3600i Series storage array.

Hardware Features

Details the physical components and indicators of the storage array.

3 Planning: RAID Controller Modules

RAID Controller Modules

Explains the function and features of RAID controller modules.

Cache Functions and Features

Details cache mirroring, write-back, and write-through cache functionalities.

4 Planning: MD3600i Series Storage Array Terms and Concepts

Physical Disks, Virtual Disks, and Disk Groups

Defines physical disks, virtual disks, and disk groups within the storage array.

RAID Levels

Explains different RAID levels, their usage, and disk group limitations.

Virtual Disk Operations

Covers virtual disk initialization, consistency checks, and media verification.

5 Configuration: Overview

User Interface

Describes the Storage Manager screen layout and its primary windows.

Enterprise Management Window (EMW)

Details the functionality and tasks performable within the EMW.

6 Configuration: About Your Storage Array

Out-of-Band and In-Band Management

Explains the two methods for managing the storage array.

Storage Arrays

Covers adding, naming, setting passwords, and removing storage arrays.

7 Configuration: Using iSCSI

Changing the iSCSI Target Authentication

Describes how to configure iSCSI target authentication settings.

Creating CHAP Secrets

Details the process of creating CHAP secrets for authentication.

8 Configuration: Event Monitor

Enabling or Disabling the Event Monitor

Instructions for enabling or disabling the event monitor on Windows and Linux.

9 Configuration: About Your Host

Configuring Host Access

Explains how to configure access for hosts to the storage array.

Managing Host Groups

Covers creating, moving, and removing host groups.

10 Configuration: Disk Groups and Virtual Disks

Creating Disk Groups and Virtual Disks

Details the process of creating disk groups and virtual disks.

Physical Disk Security with Self Encrypting Disk

Explains Self-Encrypting Disk technology and security features.

11 Configuration: Premium Feature—Snapshot Virtual Disks

Scheduling a Snapshot Virtual Disk

Covers scheduling snapshot creation for data backups and recovery.

Snapshot Rollback

Allows reverting virtual disk contents to a previous snapshot state.

12 Configuration: Premium Feature—Virtual Disk Copy

Types of Virtual Disk Copies

Explains offline and online copy types for virtual disks.

Creating a Virtual Disk Copy for an MSCS Shared Disk

Steps to create a virtual disk copy for Microsoft Cluster Server shared disks.

13 Configuration: Premium Feature—Upgrading to High-Performance-Tier

14 Configuration: Device Mapper Multipath for Linux

Overview

Introduces Device Mapper (DM) for multipath capabilities on Linux.

Device Mapper Configuration Steps

Provides steps for DM multipathing configuration on Linux hosts.

15 Management: Firmware Downloads

Downloading RAID Controller and NVSRAM Packages

Instructions for downloading and activating firmware for controllers and NVSRAM.

Self-Monitoring Analysis and Reporting Technology (SMART)

Explains SMART technology for monitoring disk health and predicting failure.

16 Management: Installing Array Components

Hard Drives

Covers removing and installing hard drives and drive blanks.

RAID Controller Module

Details removing and installing RAID controller modules and blanks.

17 Management: Firmware Inventory

Viewing the Firmware Inventory

Describes how to view and save firmware inventory information.

18 Management: System Interfaces

Microsoft Services

Explains Virtual Disk Service (VDS) and Volume Shadow-Copy Service (VSS).

19 Troubleshooting: Your Storage Array Software

Device Health Conditions

Explains status icons and how to interpret them.

Recovery Guru

Component of MDSM for diagnosing critical events and recovery procedures.

20 Troubleshooting: Your Array

Safety First—For you and Your Array

Emphasizes safety precautions for handling the array and its components.

Troubleshooting RAID Controller Modules

Guides on diagnosing and resolving issues with RAID controller modules.

21 Getting Help

Contacting Dell

Provides information on how to contact Dell for support and service.