Tandberg Data
RAID configuraion
_____________________________________________________________
3-3
Tandberg Viking FS-1600 Series NAS Hardware User Manual
3.1.1. System Volume (SV)
This volume is organized as a RAID 0+1 volume. This volume includes the
operating system image (Windows
®
Storage Server 2003). The minimum
recommended size for this volume is 10 GB (default). The RAID level can be
customized using the RAID controller BIOS or web-based RAID manager.
The web-based RAID manager is only available after OS installation or
recovery. For more information on how to use the RAID Volume
Configuration utility, see “RAID Management” on 5.2.
3.1.2. Data Volume (DV)
The remaining hard drives space can be organized as the Data Volume
using RAID 5 or other RAID level definable by user. For a FS-1600 Series
NAS appliance installed with four 250 GB hard drives, the data volume size
can be set to 735 GB using the recommended RAID and Volume settings.
3.2. RAID Volume Calculation
Depending on the hard drive capacity, the System Volume and Data Volume
capacity can have different capacity sizes. A simple formula to calculate
Data Volume size (DV) per RAID level is shown in the table below (where
SV is the size of the System Volume in gigabytes) based on Tandberg
Data’s recommended settings:
RAID Level
Formula
5
DV = {[(Per HDD capacity × 4) – 2 × SV] ÷ 4} × 3
0+1
DV = {[(Per HDD capacity × 4) – 2 × SV] ÷ 4} × 2
0
DV = (Per HDD capacity × 4) – 2 × SV
Refer to the following table for changing the Data Volume of your hard drive
or changing the default configuration setting according to your Data Volume
size preference:
HDD Capacity
(GB)
System
Volume (GB)
Data Volume
RAID 5 (GB)
Data Volume
RAID10 (GB)
Data Volume
RAID 0 (GB)
500 10 1485 990 1980
250 10 735 490 980
Use the Serial-ATA II RAID controller BIOS change the system volume size
and RAID level of your hard drive. For more information, see “RAID
Management” on 5.2.
The Serial-ATA II RAID controller also supports additional RAID level e.g. 6
and since the FS-1600 Series NAS appliance accommodates a maximum of
16 HDD, the flexibility of RAID configurations is up to the user entirely.
Please see the Serial-ATA II RAID User Guide for more details.
