Netgear RND4475 Software Manual - Page 19

X-RAID2, automatically. You can replace existing disks with larger capacity disks and X-RAID2

Get Netgear RND4475 - ReadyNAS NV+ NAS Server PDF manuals and user guides
UPC - 606449056761
View all Netgear RND4475 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 19 highlights

ReadyNAS for Home RAIDiator 5.3 X-RAID2 X-RAID2 is a RAID technology that expands automatically and is available only on ReadyNAS systems. With X-RAID2, you do not need to know intricate details about RAID to administer your system. X-RAID2 allows you to add storage space without reformatting your drives or moving your data to another location. Because the expansion happens online, you can continue to use your ReadyNAS system while the underlying volume capacity increases. Because X-RAID2 uses a single-volume architecture, if you configure your hard disk drives to use X-RAID2, your storage system has only one volume that is made up of all installed hard disk drives. X-RAID2's single-volume architecture has two major advantages: • Easy system management • Auto expansion With typical RAID formatting, if you want to add disks or replace disks with larger capacity disks, you must back up the data to another system, add a new disk, reformat the RAID volume, and restore the data to the new RAID volume. With X-RAID2, none of those administrative tasks are required. Instead, with X-RAID2, your volume automatically expands to accommodate additional disks or larger capacity disks when you replace smaller capacity disks. With X-RAID2, you can start out with one hard disk, add a second disk for data protection, then add more disks for additional capacity, and X-RAID2 accommodates the new disks automatically. You can replace existing disks with larger capacity disks and X-RAID2 automatically accommodates the new disks. X-RAID2 requires a minimum of two hard disks to provide protection against disk failure. If you have a one-disk X-RAID2 storage system and want protection from disk failure, you must add a second disk that is at least as large as the first. It can be added while the system is running. X-RAID2 uses the first disk to store data, and the second disk to store parity information that allows it to re-create data if a disk fails. This means that in a two-disk system, the usable storage space is one disk. In a three-disk system, the usable storage space is two disks, and in a four-disk volume, the usable storage space is three disks. Disk Configuration 19

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
Disk Configuration
19
ReadyNAS for Home RAIDiator 5.3
X-RAID2
X-RAID2 is a RAID technology that expands automatically and is available only on
ReadyNAS systems. With X-RAID2, you do not need to know intricate details about RAID to
administer your system. X-RAID2 allows you to add storage space without reformatting your
drives or moving your data to another location. Because the expansion happens online, you
can continue to use your ReadyNAS system while the underlying volume capacity increases.
Because X-RAID2 uses a single-volume architecture, if you configure your hard disk drives to
use X-RAID2, your storage system has only one volume that is made up of all installed hard
disk drives. X-RAID2’s single-volume architecture has two major advantages:
•
Easy system management
•
Auto expansion
With typical RAID formatting, if you want to add disks or replace disks with larger capacity
disks, you must back up the data to another system, add a new disk, reformat the RAID
volume, and restore the data to the new RAID volume. With X-RAID2, none of those
administrative tasks are required. Instead, with X-RAID2, your volume automatically expands
to accommodate additional disks or larger capacity disks when you replace smaller capacity
disks.
With X-RAID2, you can start out with one hard disk, add a second disk for data protection,
then add more disks for additional capacity, and X-RAID2 accommodates the new disks
automatically. You can replace existing disks with larger capacity disks and X-RAID2
automatically accommodates the new disks.
X-RAID2 requires a minimum of two hard disks to provide protection against disk failure. If
you have a one-disk X-RAID2 storage system and want protection from disk failure, you must
add a second disk that is at least as large as the first. It can be added while the system is
running.
X-RAID2 uses the first disk to store data, and the second disk to store parity information that
allows it to re-create data if a disk fails. This means that in a two-disk system, the usable
storage space is one disk. In a three-disk system, the usable storage space is two disks, and
in a four-disk volume, the usable storage space is three disks.