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Adaptec 5325301507 Administration Guide - Page 71

Adding an Expansion Array, Grouping RAIDs with other Grouped RAIDs, Deleting Grouped RAIDs

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RAIDs Also consider the following: Adding an Expansion Array In a common scenario, a four-drive SnapServer configured as a RAID 5 is nearing full utilization. The administrator decides to add an expansion array. The administrator creates a RAID 5 on the expansion array, groups it with the existing RAID on the SnapServer, and then expands the size of the original volumes using the new storage from the expansion array. Grouping RAIDs with other Grouped RAIDs Just as RAIDs can be grouped, individual groups of RAIDs can be brought together to form an even larger group. For example: A 1 TB SnapServer is running out of capacity. Two 1 TB 12-drive expansion arrays are attached to the SnapServer to provide increased capacity. You can configure a RAID 5 on each of the expansion arrays, then group them together. The resulting RAID group can then be grouped with the RAID on the SnapServer, allowing network users to take advantage of the full capacity of the head and expansion arrays with no loss of capacity. Deleting Grouped RAIDs Deleting the RAID Group will delete all member RAIDs, all their volumes and shares, and all their data. If one RAID becomes inaccessible for any reason, the entire RAID group will also become inaccessible. Depending on the cause, the RAID group may or may not be recoverable. For example, if a RAID group spans a host SnapServer and an expansion array and one of the RAIDs goes down because of a disconnected cable, the RAID group is fully recoverable by reconnecting the cable and rebooting the system. On the other hand, if one of the RAIDs becomes corrupted and remains unrecoverable, the data in the other RAID will also be lost. Snapshot Pools are Combined When two RAIDs are grouped, the size of the resulting snapshot pool is the sum of each RAID's formerly separate snapshot pools. Two RAIDs at a Time To group more than two RAIDs, create a RAID group with two RAIDs, then group the RAID group with each RAID one at a time. You can view your RAID group status from either the Storage > RAID Sets or Monitor > System Status screen. Note Only RAIDs of the same PE size can be grouped. The Web UI will notify you if you attempt to group two RAIDs with different PE sizes. Chapter 4 Storage Configuration and Expansion 55

Section	Page
Title Page	1
Contents	7
Preface	13
1 - Administrative Overview	17
GuardianOS Specifications	18
What’s New in GuardianOS	22
SnapServer Manager	28
Connecting to the Server for the First Time	30
Using the Initial Setup Wizard	32
Determining Capacity	33
Scheduling Data Protection Tasks	34
Migrating Data from Legacy Servers to the SnapServer	35
Configuring the SnapServer as a Print Server	35
Configuring the SnapServer as a Simple Web Server	35
Configuring an APC-Brand UPS	35
SnapExtensions	36
Wake-on-LAN Support	36
2 - Network Access to the Server	37
Viewing Current Network Settings	38
TCP/IP Options	39
Configuring TCP/IP Settings	41
Default Network Protocol Settings	44
Windows Networking Configuration	45
Support for Windows Networking (SMB)	45
Support for Windows Network Authentication	46
NFS Access	49
Apple Networking Configuration	50
FTP/FTPS Access	52
HTTP/HTTPS Access	53
Web View	54
DHCP Server	55
Print Server	55
3 - User & Group Management	59
Default User and Group Settings	60
UID and GID Assignments	60
Local Users and Groups	61
NIS Domain	63
4 - Storage Configuration and Expansion	65
Default Storage Configuration	66
Changing the Default Storage Configuration	67
RAIDs	67
RAID Groups	70
Volumes	72
Quotas	76
Setting User Quotas	76
Data Migration	77
Preserving Permissions	77
Expansion Arrays	79
SnapServer EXP E2000	79
Snap Expansion S50	80
Managing Expansion Array Storage	81
Integrating Orphan Expansion Units	82
Disks and Units	83
Replacing Disk Drives on a RAID	83
Adding Disk Drives to a RAID	84
Adding New Disk Drives to Increase Capacity	84
Hot Swapping Disk Drives	86
5 - iSCSI Disks	93
Configuring iSCSI Initiators	94
iSCSI Configuration for Microsoft Windows using MS Initiator	95
Configuring the QLogic QLA4010 and QLA4050/52c iSCSI Initiators for Microsoft Windows	100
iSCSI Configuration for Linux and UNIX	101
iSCSI Configuration for Novell NetWare	102
iSCSI Configuration for VMware	102
iSCSI Configuration for Mac	103
iSCSI Configuration on the SnapServer	104
Creating iSCSI Disks	107
Configuring VSS/VDS for iSCSI Disks	109
6 - Share and File Access	111
Configuring Share and Folder Security Overview	112
Components and Options	115
SnapTrees and Security Models	116
ID Mapping	118
Shares	119
Configuring Share Access	121
Share Access Behaviors	121
Setting User-based Share Access Permissions	122
Creating Home Directories	122
Windows ACLs	123
Setting File and Directory Access Permissions and Inheritance (Windows)	124
Security Guides	125
7 - Snapshots	127
Snapshot Management and Usage	128
Estimating Snapshot Pool Requirements	129
Adjusting Snapshot Pool Size	130
Accessing Snapshots	130
Coordinating Snapshot and Backup Operations	131
8 - Disaster Recovery	133
Backing Up Server and Volume Settings	133
Backing Up the NetVault Database Directory	136
Recovering the NetVault Database	137
Disaster Recovery Procedural Overview	139
Cloning a Server	140
9 - CA eTrust Antivirus Software	141
Antivirus Dependencies	142
Launching the CA eTrust Antivirus GUI	143
The Local Scanner View	143
Scan Job Configuration and Scheduling	144
Defining Scan Jobs	144
Running a Manual Scan Job	146
Scheduling a Scan Job	146
Signature Updates	147
Updating SnapServers that have Internet Access	148
Updating a SnapServer that does not have Internet Access	148
Distributing Updates from One Server to Another	149
Verifying Download Events	151
Alert Options	151
The Move Directory	152
Log View	153
10 - Unicode	155
What is Unicode?	155
Converting to Unicode	155
Unicode and Protocol Interaction	157
How Snapshots Interact with Unicode	159
Backing Up Unicode Servers	159
Unicode and Expansion Arrays	161
A - Backup and Replication Solutions	163
Integrated Backup Solutions for the SnapServer	164
BakBone Netvault	164
Snap Enterprise Data Replicator (Snap EDR)	165
Off-the-Shelf Backup Solutions for the SnapServer	167
Preparing to Install a Backup Solution	167
Preinstallation Tasks	168
Installing the CA BrightStor ARCserve Agent	169
Installing the Symantec Backup Exec RALUS Agent	172
Installing the Symantec NetBackup v6.5 Client	175
Installing the EMC Legato NetWorker Client	177
Backup of iSCSI Disks	182
B - Command Line Interface	183
SnapCLI Syntax	183
SnapCLI Commands	186
Scripts in SnapCLI	193
C - Troubleshooting SnapServers	197
The Meaning of LED Indicators	198
SnapServer NAS N2000 and EXP E2000 Status and Drive Light Behavior	198
SnapServer 110/210 Status and Drive Light Behavior	201
SnapServer 410 Status and Drive Light Behavior	202
SnapServer 500/600 Series Status and Drive Light Behavior	204
SnapServer 4200/4500 Status and Drive Light Behavior	207
SnapServer 18000 Status and Drive Light Behavior	209
Snap Expansion S50 Enclosure, Disk Drive, APC Module, and Controller Behavior	212
Snap Disk 10 Disk Drive and Power Supply Module LEDs	214
Snap Disk 30SA Disk Drive and Power/Fan Module Behavior	216
System Reset Options	219
Resetting the SnapServer to Factory Defaults	219
Performing System Resets Without Network Access	220
Networking Issues	221
Miscellaneous Issues	224
Phone Home Support	226
D - GuardianOS Ports	229
Glossary	233

Match case Limit results 1 per page

RAIDs

Chapter 4

Storage Configuration and Expansion

Also consider the following:

Adding an Expansion Array

In a common scenario, a four-drive SnapServer configured as a RAID 5 is nearing

full utilization. The administrator decides to add an expansion array. The

administrator creates a RAID 5 on the expansion array, groups it with the existing

RAID on the SnapServer, and then expands the size of the original volumes using

the new storage from the expansion array.

Grouping RAIDs with other Grouped RAIDs

Just as RAIDs can be grouped, individual groups of RAIDs can be brought together

to form an even larger group. For example: A 1 TB SnapServer is running out of

capacity. Two 1 TB 12-drive expansion arrays are attached to the SnapServer to

provide increased capacity. You can configure a RAID 5 on each of the expansion

arrays, then group them together. The resulting RAID group can then be grouped

with the RAID on the SnapServer, allowing network users to take advantage of the

full capacity of the head and expansion arrays with no loss of capacity.

Deleting Grouped RAIDs

Deleting the RAID Group will delete all member RAIDs, all their volumes and

shares, and all their data. If one RAID becomes inaccessible for any reason, the

entire RAID group will also become inaccessible. Depending on the cause, the

RAID group may or may not be recoverable. For example, if a RAID group spans a

host SnapServer and an expansion array and one of the RAIDs goes down because

of a disconnected cable, the RAID group is fully recoverable by reconnecting the

cable and rebooting the system. On the other hand, if one of the RAIDs becomes

corrupted and remains unrecoverable, the data in the other RAID will also be lost.

Snapshot Pools are Combined

When two RAIDs are grouped, the size of the resulting snapshot pool is the sum of

each RAID’s formerly separate snapshot pools.

Two RAIDs at a Time

To group more than two RAIDs, create a RAID group with two RAIDs, then group

the RAID group with each RAID one at a time.

You can view your RAID group status from either the

Storage > RAID Sets

Monitor > System Status

screen.

Note

Only RAIDs of the same PE size can be grouped. The Web UI will notify you

if you attempt to group two RAIDs with different PE sizes.