Promise Technology Pegasus3 R4 User Manual

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Technology BackgroundPegasus3 Product Manual
The data capacity RAID 10 logical drive equals the capacity of the smallest physical drive times the
number of physical drives, divided by two.
In some cases, RAID 10 offers double fault tolerance, depending on which physical drives fail.
RAID 10 arrays require an even number of physical drives and a minimum of four.
For RAID 10 characteristics using an odd number of physical drives, choose RAID 1E.
Advantages Disadvantages
• Implemented as a mirrored disk
array whose segments are RAID 0
disk arrays
• High I/O rates are achieved
thanks to multiple stripe segments
• Very high disk overhead – uses only
50% of total capacity
RecommendedApplicationsforRAID10:
• Imaging applications
• Database servers
• Generalleserver
RAID 50 – Striping of Distributed Parity
RAID 50 combines both RAID 5 and RAID 0 features. Data is striped across physical drives as in
RAID 0, and it uses distributed parity as in RAID 5. RAID 50 provides data reliability, good overall
performance, and supports larger volume sizes.
The data capacity RAID 50 logical drive equals the capacity of the smallest physical drive times the
number of physical drives, minus two.
RAID 50 also provides very high reliability because data is still available even if multiple physical drives
fail (one in each axle). The greater the number of axles, the greater the number of physical drives that
canfailwithouttheRAID50logicaldrivegoingofine.
A minimum of six drives are required for a RAID 50.

Promise Technology Pegasus3 R4 Specifications

General

Internal	No
Chassis type	Tower
Cooling type	Active
Device class	Small & Medium Business
Fan diameter	92 mm
Certification	CB, UL, cUL, TUV , BSMI, SPRING, BIS FCC, CE-EMC, VCCI, BSMI, RCM KCC
Product color	Black
LED indicators	Yes
Number of fans	1 fan(s)
Airflow (imperial)	70 cfm
Management platform	Pegasus Utility
Cable lock slot type	Kensington
RAID levels	0, 1, 1E, 5, 6, 10
Data transfer rate	40 Gbit/s
Storage drive size	3.5 \
Storage drive capacity	4000 GB
Storage drive interface	Serial ATA
Installed storage drive type	HDD
Supported storage drive types	HDD & SSD
Total installed storage capacity	16 TB
Maximum supported storage capacity	- TB
Number of storage drives installed	4
AC input voltage	100-230 V
AC input frequency	50 - 60 Hz
Number of power supply units	1
Power supply unit (PSU) capacity	250 W
Thunderbolt version	3
Thunderbolt ports quantity	2
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	5 - 35 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	10 - 95 %
Cables included	AC, Thunderbolt

Weight and Dimensions

Depth	188 mm
Width	248 mm
Height	195 mm
Weight	6800 g