Promise Technology Smartstor NS4600 User Manual

Chapter 6: Technology Background
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RAID 10 – Mirror / Stripe
Mirror/Stripe combines both of the RAID 0 and RAID 1 types. RAID 10 can
increase performance by reading and writing data in parallel while protecting data
with duplication. At least four disk drives are needed for RAID 10 to be installed.
With a four-disk-drive RAID Volume, one drive pair is mirrored together then
striped over a second drive pair.
Figure 4. RAID 10 takes a data mirror on one drive pair and stripes it over
two drive pairs
The data capacity RAID 10 Volume equals the capacity of the smallest disk drive
times the number of disk drives, divided by two.
In some cases, RAID 10 offers double fault tolerance, depending on which disk
drives fail.
RAID 10 Volumes on SmartStor consist of four disk drives.
Because all of the available disk drives are used for the RAID Volume, you
cannot set up a spare drive with RAID 10.
Data Stripe
Data
Mirror
disk drives

Promise Technology Smartstor NS4600 Specifications

General

RAID levels	0, 1, 5, 10
Storage drive size	3.5 \
Hot-swap drive bays	Yes
Storage drive capacity	0 GB
Supported file systems	EXT3, FAT32
Storage drive interface	Serial ATA II
Total installed storage capacity	0 TB
Number of storage drives installed	4
Internal memory	0.25 GB
Processor model	-
Processor frequency	0.6 GHz
Maximum data transfer rate	1000 Mbit/s
Supported network protocols	FTP, DHCP, NTP
Compliance industry standards	IEEE 802.3i, IEEE 802.3ab, IEEE 802.3u
Certification	RoHS, CE, FCC, UL, TUV
Data transfer rate	3 Gbit/s
Dimensions (WxDxH)	152.5 x 229.6 x 188.2 mm
Power requirements	100 - 230 V/50-60 Hz
Networking features	Gigabit Ethernet
Compatible operating systems	Windows 2000/XP/2003/Vista Mac x 10.4 + Linux
USB 2.0 ports quantity	2
Ethernet LAN (RJ-45) ports	1
Power supply unit (PSU) capacity	90 W
Operating temperature (T-T)	5 - 35 °C
Operating relative humidity (H-H)	10 - 85 %

Weight and Dimensions

Weight	2500 g