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ReadyNAS Pro Business Edition User Guide
Getting Acquainted 1-3
v1.3, November 2008
The X-RAID Data Volume
X-RAID has one data volume. This volume uses the capacity of the smallest disk from each disk.
For instance, if you had one 80 GB disk and two 250 GB disks, only 80 GB from each disk is used
in the volume. The leftover space on the 250 GB disks is reclaimed only when the 80 GB disk is
replaced with a 250 GB or greater capacity disk. However, as you will see below,
X-RAID2 is more flexible in how it handles volume expansion.
Horizontal Expansion (More Disks) vs. Vertical Expansion (Larger Disks)
The process of expanding the number of disks we call horizontal expansion. X-RAID also
supports vertical expansion by adding larger disks. With first generation X-RAID, horizontal
expansion, the capacity is limited to a multiple of your original disk. As larger or more affordable
disks become available, you take advantave of vertical expansion to grow the size of your volume.
You can add additional disks of at least the size of the 1st disk. You can add a larger disk, but with
the original X-RAID extra space will not be used until all disks are at least that size.
X-RAID supports replacing disks with larger capacity ones while keeping the volume data intact.
Simply replace each of your disks one by one with a larger disk. After the init process, the disk will
be synchronized to restore data redundancy. Again, this process can take 30 minutes to several
hours. Both processes occur in the background, so you can continue using the ReadyNAS as usual.
Once you have done this for all disks in the system, just reboot the ReadyNAS to start the volume
expansion which occurs in the background. When the process completes, your data will remain
intact, but your data volume capacity will have expanded to a multiple of the your smallest
capacity disk. That multiple is the total number of disks minus 1 for redundancy. For example, if
your system now has 3 disks, and the smallest is 500 GB, then the volume capacity is 1TB.
The beauty with vertical expansion is that you can keep expanding your volume repeatedly with
larger capacity disks, a definite future-proof advantage that you can count on with the ReadyNAS.
X-RAID2 Is Even More Flexible
Now, X-RAID2 will automatically expand when as little as two of your disks have extra capacity.
Your data volume can keep growing every time you add a larger disk after that. X-RAID2 lets you
do this without reformatting your disks and shuffling your data back and forth. The process occurs
in the background, so access to the ReadyNAS Pro Business Edition is not interrupted.
Others may claim that they have “online” RAID expansion just like X-RAID2, but take a closer
look and you’ll see it’s just not that simple. Unlike X-RAID2, not only will there be complex
RAID migration steps, but they cannot recover from a power loss during the process. With X-
RAID2, you can turn off the power as many times as you want during the expansion, and it’ll
continue where it left off.
- ReadyNAS Pro 1
- Business Edition User 1
- Contents 5
- About This Manual 9
- How to Use This Manual 10
- How to Print This Manual 10
- Revision History 11
- Chapter 1 13
- Getting Acquainted 13
- X-RAID Is Expandable RAID 14
- X-RAID2 Is Even More Flexible 15
- Front and Side Panel 16
- Drive Bay 17
- Rear Panel 18
- Initial Setup 19
- The RAIDar Setup Utility 20
- Getting Acquainted 1-9 21
- Figure 1-5 21
- Figure 1-6 21
- NETGEAR ReadyNAS Community 22
- Chapter 2 23
- Ethernet Interfaces 24
- Figure 2-6 26
- Global Network Settings 27
- Figure 2-9 28
- Route: A Manual Routing Table 29
- Updating the Admin Password 30
- Standard File Protocols 31
- Streaming Services 33
- Discovery Services 34
- Figure 2-17 37
- Figure 2-18 37
- Figure 2-19 38
- Figure 2-20 39
- Volume Management for X-RAID2 40
- Volume Maintenance 41
- Working with USB Volumes 42
- Figure 2-24 43
- Setting Up Printers 44
- Managing Print Queues 45
- Adjusting System Settings 46
- Figure 2-29 47
- Figure 2-30 47
- Figure 2-31 48
- Language Settings 49
- Figure 2-34 50
- Figure 2-35 51
- Figure 2-36 51
- Figure 2-37 52
- Figure 2-38 52
- Configuration Backup 53
- Chapter 3 55
- Managing User Access 55
- 3-2 Managing User Access 56
- Figure 3-1 56
- User Security Mode 57
- Domain Security Mode 58
- Managing User Access 3-5 59
- Changing User Passwords 63
- Managing Your Shares 64
- Adding Shares 65
- Managing Shares 65
- 3-12 Managing User Access 66
- Figure 3-14 66
- Managing User Access 3-13 67
- Figure 3-15 67
- 3-14 Managing User Access 68
- Figure 3-16 68
- Managing User Access 3-15 69
- Figure 3-17 69
- Figure 3-18 69
- Web Browser 70
- Managing User Access 3-17 71
- Figure 3-21 71
- Figure 3-22 71
- FTP/FTPS 72
- Managing User Access 3-19 73
- Figure 3-25 73
- Remote Access 74
- Remote FTP Access 75
- Remote HTTP Access 76
- Managing User Access 3-23 77
- Figure 3-30 77
- 3-24 Managing User Access 78
- Securing Your Data 79
- Chapter 4 79
- 4-2 Securing Your Data 80
- Securing Your Data 4-3 81
- 4-4 Securing Your Data 82
- Figure 4-2 82
- Securing Your Data 4-5 83
- Figure 4-3 83
- Viewing the Backup Schedule 84
- Programming the Backup Button 85
- Snapshots 86
- Securing Your Data 4-9 87
- Figure 4-7 87
- 4-10 Securing Your Data 88
- Figure 4-8 88
- Figure 4-9 88
- Securing Your Data 4-11 89
- Figure 4-10 89
- Figure 4-11 89
- 4-12 Securing Your Data 90
- Chapter 5 91
- Optimizing Performance 91
- Adding a UPS for Performance 92
- Power Management 93
- Power Timer 94
- UPS Configuration 94
- Wake-On-LAN 94
- Chapter 6 95
- Managing Levels of Service 95
- Figure 6-2 96
- Figure 6-3 96
- Replacing a Failed Disk 97
- Figure 6-5 98
- Figure 6-6 98
- Resynchronizing the Volume 99
- Configuring RAID 101
- Shutdown 102
- Appendix A 103
- AFP over Bonjour 104
- AFP over AppleTalk 105
- Figure A-6 106
- Figure A-7 106
- MAC OS 9 107
- Figure A-10 108
- Figure A-11 108
- Figure A-12 109
- Appendix B 111
- Related Documents 111
- B-2 Related Documents 112
- Numerics 113
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