ZyXEL Communications 4.6 Manual Do Utilizador

Media Server User’s Guide

Several NSA features require a valid internal volume. This chapter covers the management of 
volumes and disks (both internal and external). 

Use the Storage screen (

) to display information on all volumes, create 

internal and external volumes, and configure the volume’s properties.

SATA or Serial ATA (Advanced Technology Attachment) is a computer bus technology that allows 
high-speed data transfer to and from hard disks.

1-bay NSA models include an eSATA port. An eSATA (external SATA) hard disk has the same 
specifications as a SATA hard disk but is attached to the NSA using a cable. It can be used either to 
expand storage or backup data. The eSATA hard disk is optional. You can attach one SATA and one 
eSATA to the NSA hard disk tray. Both SATA and eSATA hard disks are treated as internal disks/
volumes (refer to 

). 

USB-attached storage disks are treated as external disks/volumes.  

A volume is a storage area on a disk or disks. You can create volumes on the internal disks and 
external disks attached to the USB port(s). You can spread a volume across internal disks but not 
between internal and external disks. 

The NSA uses the following storage methods:

• RAID (Redundant Array of Independent Disks) 
• PC Compatible Volume (1-bay models)
• JBOD (Just a Bunch of Disks)

The storage method you use depends on how many disks you have and how many volumes you 
want to create. It’s important that you consider this carefully as all data is deleted when you re-
create a volume. See 

 for details on choosing a storage method.