LevelOne GNS-8000A, Руководство пользователя

Страница: 17 / 87

16
RAID 5 disk group is one disk’s worth of space less than the total rated
capacity of the group.
Note: RAID 5 may be used only with equipment that has three or more
disks.
• RAID 1 Mirroring Disk Volume
Mirroring Disk protects your data by automatically backing up the contents of
one disk onto the second disk of a mirrored pair. This protects your data if
one of the disks fails. Unfortunately, the storing capacity is equal to a single
disk, as the second drive is used to automatically back up the first. Mirroring
Disk is suitable for personal or corporate use to store important data.
• RAID 0 Striping Disk Volume
Striping disk combines two or more disks into one larger disk. It offers the
fastest disk access but it does not have any protection of your data if the
striped array fails. The disk capacity equals the number of disks in the array
times the size of the smallest disk. Striping disk is usually used to maximize
your disk capacity or for fast disk access but not for storing important data.
• Linear Disk Volume
You can combine two or more disks into one larger disk. During file saving,
the files are saved on physical disks sequentially but do not have a disk
failure file protection function. The overall capacity of linear disks is the sum
of all disks. Linear disks are generally used for storing large data and are not
appropriate to use for file protection of important data.
By factory default, the GNS-8000A has been pre-set into one large disk. If
you wish to use other disk configurations, the settings can be changed during
the first Quick Configuration access. Furthermore, to increase the hard disk
life, the hard disk will go to standby mode if there is no access within 30
minutes. If any data access happens while the hard disk is in stand-by mode,
it will take 3 or 5 seconds for the hard disk to return to normal mode. You
can select
System Tools · Hardware Settings to change the setting.
You can also perform the following disk administration:
Create Disk Volume
Delete Disk Volume
Examine Disk Volume
Format Disk Volume
View Disk & Volume Status
In addition to the above functions, users can also perform snapshot taking in
Snapshot Settings of System Tools. This function enables users to take a
real-time and dynamic replication of the snapshot according to the disk
volume at a certain point of time. The data contained in the snapshot is the
same as the previously copied network hard disk drives. The content in the
snapshot will not be affected even when changing the content of the disk
volume. If an original data is damaged, it can be restored from the snapshot
image.