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Adaptec 5325301656 Administration Guide - Page 112

Adjusting Snapshot Pool Size, Accessing Snapshots, Creating a Snapshot Share

UPC - 753253016563

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Adjusting Snapshot Pool Size Adjusting Snapshot Pool Size The current size of the snapshot pool for each RAID (or RAID group) can be viewed by navigating to the Storage > Snapshots screen and clicking the adjust snapshot space link in the introductory text. On the screen that opens, you can adjust the pool up or down as necessary at any time. In addition, there are two other processes that may affect the size of the snapshot pool: • Creating a Volume - In the course of creating a new volume, a pull-down menu allows you to add a percentage of the capacity being allocated to the new volume to the snapshot pool. This feature defaults to 20 percent, the recommended amount of space to reserve for snapshots. If you do not plan to use snapshots with this volume, maximize volume capacity by reducing this percentage to zero; if you do plan to use snapshots, adjust this percentage in accordance with the guidelines discussed in the previous section Estimating Snapshot Pool Requirements. • Creating a RAID Group - When two RAIDS are grouped, their snapshot pools are added together. For example, if RAID A with a snapshot pool of 50 GB is grouped with RAID B with a snapshot pool of 25 GB, the resulting RAID group will have a snapshot pool of 75 GB. Depending on the purpose you had in mind when grouping the RAIDs, the result of combining the two snapshot pools may or may not be desirable, and you will need to readjust the size as described previously. Accessing Snapshots Snapshots are accessed via a snapshot share. Just as a share provides access to a portion of a live volume (or file system), a snapshot share provides access to the same portion of the file system on all current snapshots of the volume. The snapshot share's path into snapshots mimics the original share's path into the live volume. Creating a Snapshot Share You create a snapshot share by selecting the Create Snapshot Share option in the course of creating a live-volume share, under the Advanced button. For example, assume you create a share to a directory called "sales," and you select the Create Snapshot Share option. When you connect to the server via Internet Explorer or other file browser, two shares display: SALES SALES_SNAP The first share provides access to the live volume, and the second share provides access to any archived snapshots. Other than read-write settings (snapshots are 98 Snap Server Administrator Guide

Section	Page
Contents	7
Administrative Overview	15
GuardianOS Specifications	16
What’s New in GuardianOS	19
Snap Server Manager	23
Connecting to the Server for the First Time	26
Using the Initial Setup Wizard	28
Determining Capacity	29
Scheduling Data Protection Tasks	30
Migrating Data from Legacy Servers to the Snap Server	30
Configuring the Snap Server as a Print Server	31
Configuring an APC-Brand UPS	31
SnapExtensions	31
Network Access to the Server	33
Viewing Current Network Settings	34
TCP/IP Options	35
Configuring TCP/IP Settings	37
Default Network Protocol Settings	39
Windows Networking Configuration	40
Support for Windows Networking (SMB)	40
Support for Windows Network Authentication	41
NFS Access	44
Apple Networking Configuration	45
FTP Access	47
HTTP/HTTPS Access (Web View)	47
DHCP Server	48
Print Server	48
User & Group Management	51
Default User and Group Settings	52
UID and GID Assignments	52
Local Users and Groups	53
NIS Domain	54
Storage Configuration and Expansion	55
Default Storage Configuration	56
Changing the Default Storage Configuration	56
RAIDs	57
RAID Groups	59
Volumes	61
Quotas	63
Setting User Quotas	64
Data Migration	64
Preserving Permissions	65
Expansion Arrays	66
The SANbloc S50	66
Managing Expansion Array Storage	67
Disks and Units	69
Replacing Disk Drives on a RAID	69
Adding Disk Drives to a RAID	70
Hot Swapping Disk Drives	70
iSCSI Disks	77
Configuring iSCSI Initiators	78
iSCSI Configuration for Microsoft Windows using MS Initiator	79
Configuring the QLogic QLA4010 and QLA4050 iSCSI Initiators for Microsoft Windows	84
iSCSI Configuration for Linux and UNIX	84
iSCSI Configuration for Novell NetWare	86
iSCSI Configuration for VMware	86
iSCSI Configuration on the Snap Server	87
Creating iSCSI Disks	90
Share and File Access	93
Configuring Share and Folder Security Overview	94
Components and Options	96
SnapTrees and Security Models	98
ID Mapping	100
Creating Shares	101
Configuring Share Access	102
Share Access Behaviors	102
Setting Share Access Permissions	103
Creating Home Directories	104
Windows ACLs	104
Setting File and Directory Access Permissions and Inheritance (Windows)	105
Security Guides	106
Snapshots	109
Snapshot Management and Usage	110
Estimating Snapshot Pool Requirements	111
Adjusting Snapshot Pool Size	112
Accessing Snapshots	112
Coordinating Snapshot and Backup Operations	113
Disaster Recovery	115
Backing Up Server and Volume Settings	115
Backing Up the NetVault Database Directory	118
Recovering the NetVault Database	119
Disaster Recovery Procedural Overview	121
CA eTrust Antivirus Software	123
Antivirus Dependencies	124
Launching the CA eTrust Antivirus GUI	125
The Local Scanner View	126
Scan Job Configuration and Scheduling	127
Defining Scan Jobs	127
Running a Manual Scan Job	128
Scheduling a Scan Job	128
Signature Updates	129
Updating Snap Servers that have Internet Access	130
Updating a Snap Server that does not have Internet Access	131
Distributing Updates from One Server to Another	131
Verifying Download Events	133
Alert Options	134
The Move Directory	134
Log View	135
Unicode	137
What is Unicode?	137
Converting to Unicode	137
Unicode and Protocol Interaction	139
How Snapshots Interact with Unicode	141
Backing Up Unicode Servers	141
Unicode and Expansion Arrays	143
Backup and Replication Solutions	145
Integrated Backup Solutions for the Snap Server	146
BakBone Netvault	146
Snap Enterprise Data Replicator (Snap EDR)	147
Off-the-Shelf Backup Solutions for the Snap Server	149
Preparing to Install a Backup Solution	149
Preinstallation Tasks	150
Installing the CA BrightStor ARCserve Agent	151
Installing the Symantec Backup Exec RALUS Agent	154
Installing the Symantec NetBackup v6.5 Client	157
Installing the EMC Legato NetWorker Client	159
Command Line Interface	165
SnapCLI Syntax	165
Scripts in SnapCLI	168
Troubleshooting Snap Servers	173
The Meaning of LED Indicators	174
Snap Server 110/210 Status and Drive Light Behavior	174
Snap Server 410 Status and Drive Light Behavior	176
Snap Server 500 Series/600 Series Status and Drive Light Behavior	177
Snap Server 4200/4500 Status and Drive Light Behavior	180
Snap Server 18000 Status and Drive Light Behavior	182
SANbloc S50 Enclosure, Disk Drive, APC Module, and Controller Behavior	185
Snap Disk 10 Disk Drive and Power Supply Module LEDs	188
Snap Disk 30SA Disk Drive and Power/Fan Module Behavior	189
System Reset Options	192
Resetting the Snap Server to Factory Defaults	192
Performing System Resets Without Network Access	193
Networking Issues	194
Miscellaneous Issues	198
Phone Home Support	200
GuardianOS Ports	201
Glossary	207

Match case Limit results 1 per page

Adjusting Snapshot Pool Size

Snap Server Administrator Guide

Adjusting Snapshot Pool Size

The current size of the snapshot pool for each RAID (or RAID group) can be viewed

by navigating to the

Storage > Snapshots

screen and clicking the

adjust snapshot

space

link in the introductory text. On the screen that opens, you can adjust the pool

up or down as necessary at any time. In addition, there are two other processes that

may affect the size of the snapshot pool:

•

Creating a Volume —

In the course of creating a new volume, a pull-down menu

allows you to add a percentage of the capacity being allocated to the new volume

to the snapshot pool. This feature defaults to 20 percent, the recommended

amount of space to reserve for snapshots. If you do not plan to use snapshots

with this volume, maximize volume capacity by reducing this percentage to zero;

if you do plan to use snapshots, adjust this percentage in accordance with the

guidelines discussed in the previous section Estimating Snapshot Pool

Requirements.

•

Creating a RAID Group —

When two RAIDS are grouped, their snapshot pools

are added together. For example, if RAID A with a snapshot pool of 50 GB is

grouped with RAID B with a snapshot pool of 25 GB, the resulting RAID group

will have a snapshot pool of 75 GB. Depending on the purpose you had in mind

when grouping the RAIDs, the result of combining the two snapshot pools may

or may not be desirable, and you will need to readjust the size as described

previously.

Accessing Snapshots

Snapshots are accessed via a snapshot share. Just as a share provides access to a

portion of a live volume (or file system), a snapshot share provides access to the

same portion of the file system on all current snapshots of the volume. The snapshot

share’s path into snapshots mimics the original share’s path into the live volume.

Creating a Snapshot Share

You create a snapshot share by selecting the

Create Snapshot Share

option in the

course of creating a live-volume share, under the

Advanced

button. For example,

assume you create a share to a directory called “sales,” and you select the

Create

Snapshot Share

option. When you connect to the server via Internet Explorer or

other file browser, two shares display:

SALES

SALES_SNAP

The first share provides access to the live volume, and the second share provides

access to any archived snapshots. Other than read-write settings (snapshots are