Promise Technology Pegasus3 R4 User Manual

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Promise Technology Pegasus3 R4/R6/R8
RAID Level Migration
The term “Migration” means either or both of the following:
• Change the RAID level of a logical drive.
• Expand the storage capacity of a logical drive.
On Pegasus, RAID level migration is performed on the disk array but it applies to the logical drives.
Migration does not disturb your data. You can access the data while the migration is in progress. When
migration is done, your disk array has a different RAID level and/or a larger capacity.
Migration Requirements
The following conditions affect RAID level migration:
• The disk array and logical drive must show a green check icon.
• The Target disk array may require more physical drives than the Source disk array.
• If the Target disk array requires an EVEN number of physical drives but the Source disk array has
an ODD number, ADD a physical drive as part of the migration process.
• You cannot reduce the number of physical drives in your disk array, even if the Target disk array
requires fewer physical drives than the Source disk array.
• RAID 1 (mirroring) works with two drives only. Only a single-drive RAID 0 disk array can migrate to
RAID 1. Other RAID Levels use too many drives to migrate.
• You cannot migrate a disk array when it is Critical or performing activities such as Synchronizing,
Rebuilding, and PDM.
• For RAID 6, you can add more physical drives but you cannot change the RAID level.
Source and Target RAID Levels
The tables on the following pages show the migration options for each source logical drive by its RAID
level. The available target RAID levels are shown with their requirements.

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