Operation Manual
Table Of Contents
- Media Server
- User’s Guide
- Getting to Know Your NSA
- NAS Starter Utility
- zCloud
- Web Configurator Basics
- Tutorials
- 5.1 Overview
- 5.2 Windows 7 Network
- 5.3 Windows 7 Network Map
- 5.4 Playing Media Files in Windows 7
- 5.5 Windows 7 Devices and Printers
- 5.6 Creating a Volume in a 2-Bay NSA
- 5.7 Creating a Volume in a 1-Bay NSA
- 5.8 Deleting a Volume
- 5.9 File Sharing Tutorials
- 5.10 Download Service Tutorial
- 5.11 Broadcatching Tutorial
- 5.12 Printer Server Tutorial
- 5.13 Copy and Flickr Auto Upload Tutorial
- 5.14 FTP Uploadr Tutorial
- 5.15 Web Configurator’s Security Sessions
- 5.16 Using FTPES to Connect to the NSA
- 5.17 Using a Mac to Access the NSA
- 5.18 How to Use the BackupPlanner
- Technical Reference
- Status Screen
- System Setting
- Storage
- Network
- Applications
- 10.1 Overview
- 10.2 What You Can Do
- 10.3 What You Need to Know
- 10.4 FTP Server
- 10.5 The Media Server Screens
- 10.6 The iTunes Server Screen
- 10.7 The Download Service Screen
- 10.8 The Web Publishing Screen
- 10.9 The Broadcatching Screen
- 10.10 The Print Server Screen
- 10.11 The Copy/Sync Button Screen
- 10.12 Technical Reference
- 10.12.1 Sharing Media Files on Your Network
- 10.12.2 Download Service
- 10.12.3 Link Capture Browser Plugin
- 10.12.4 Download Service Notification
- 10.12.5 P2P Download Security
- 10.12.6 Web Publishing Example
- 10.12.7 Web Publishing
- 10.12.8 Channel Guides for Broadcatching
- 10.12.9 Printer Sharing
- 10.12.10 Copying Files
- 10.12.11 Synchronizing Files
- Packages
- 11.1 Overview
- 11.2 What You Can Do
- 11.3 SMART Screen
- 11.4 DyDNS Screen
- 11.5 NFS Screen
- 11.6 Syslog Server Screen
- 11.7 TFTP Server Screen
- 11.8 eMule Screens
- 11.9 pyLoad Screen
- 11.10 ownCloud Setup
- 11.11 Polkast Setup
- 11.12 GoogleDrive
- 11.13 Memopal
- 11.14 Protect Screens
- 11.15 Backup Screens
- 11.16 Restore Screen
- 11.17 Technical Reference
- Auto Upload
- Dropbox
- Using Time Machine with the NSA
- Users
- Groups
- Shares
- Maintenance Screens
- Protecting Your Data
- Troubleshooting
- 20.1 Troubleshooting Overview
- 20.2 Power, Hardware, Connections, and LEDs
- 20.3 NAS Starter Utility
- 20.4 NSA Login and Access
- 20.5 I Cannot Access The NSA
- 20.6 Users Cannot Access the NSA
- 20.7 External USB Drives
- 20.8 Firmware
- 20.9 File Transfer
- 20.10 Networking
- 20.11 Some Features’ Screens Do Not Display
- 20.12 Media Server Functions
- 20.13 Download Service and Broadcatching Functions
- 20.14 Web Publishing
- 20.15 Auto Upload
- 20.16 Package Management
- 20.17 Backups
- 20.18 Google Drive
- Customer Support
- Product Specifications
- Legal Information
- Index
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Chapter 8 Storage
Media Server User’s Guide
170
Performance rankings are approximations.
8.6.2 Choosing a Storage Method for a Volume
The following is a guide to help you choose a storage method for the various number of disks
supported on the NSA. See Section 8.6.3 on page 170 for theoretical background on JBOD and the
RAID levels used on the NSA. Typical applications for each method are also shown there.
One Disk
If you only have one disk, you must use JBOD. All disk space is used for your data - none is used for
backup. If the disk fails, then you lose all the data on that volume (disk). You can add another disk
to your one-disk JBOD volume later without having to re-create shares, access rights, and so on.
Alternatively, you could create a different JBOD volume if you install a second disk. (and create new
shares, access rights and so on).
Two Disks:
You may choose JBOD, RAID 0 or RAID 1. With two disks you could create:
• up to two JBOD volumes
• one RAID 0 or RAID 1 volume
• Choose JBOD for flexibility and maximum usage of disk space for data.
• If you have a 2-bay model, you can choose RAID 0 if performance matters more than data
security. RAID 0 has the fastest read and write performance but if one disk fails you lose all
your data on the volume. It has fast performance as it can read and write to two disks
simultaneously. Performance may matter more than data security to gamers for example. This
method may also be acceptable for data that is already backed up somewhere else.
• Choose RAID 1 if data security is more important than performance. Since RAID 1 mirrors data
onto a second disk, you can recover all data even if one disk fails, but the performance is slower
than RAID 0.
8.6.3 Storage Methods
This section contains theoretical background on JBOD and the RAID levels used on the NSA.
Redundant Array of Independent Disks (RAID) is a method of storing data on multiple disks to
provide a combination of greater capacity, reliability, and/or speed. JBOD (Just a Bunch Of Disks) is
not a RAID storage method but it is included in this discussion.
Table 27 RAID Quick Comparison
RAID Level 0 1
Number of Disks 2 2
Capacity S*N S*N/2
Storage Efficiency 100% 50%
Fault Tolerance None YYYY
Availability Y YYYY
Read Performance YYYY YYY
Write Performance YYYY YYY