Product manual

Chapter 1: Introduction to VessRAID

• Background Activities, cont.

• Predictive Data Migration (PDM) replaces un-healthy disk member in

array and maintains I/O activity during the transition.

• RAID Level Migration (RLM)

• Redundancy Check

• Synchronizing

• SMART condition pooling

• Watermarking per BGA in disk and NVRAM.

• Task priority and rate control to balance I/O activity and background tasks.

• Foreground disk array initialization

Specifications

Power Supply

1840f/i/s: 450W, Dual hot-swappable and redundant, 100-240 VAC auto-ranging,

50-60 Hz, with PFC

1830i/s and 1820i/s: 350W, Dual hot-swappable and redundant, 100-240 VAC

auto-ranging, 50-60 Hz, with PFC

1740i/s: 450W, Single, 100-240 VAC auto-ranging, 50-60 Hz, with PFC and

80PLUS certification

1730i/s and 1720i/s: 350W, Single, 100-240 VAC auto-ranging, 50-60 Hz, with

PFC and 80PLUS certification

1840f/i/s+: 450W, Dual hot-swappable and redundant, 100-240 VAC auto-

ranging, 50-60 Hz, with PFC

1830i/s+: 350W, Dual hot-swappable and redundant, 100-240 VAC auto-ranging,

50-60 Hz, with PFC

1720i+: 350W, Single, 100-240 VAC auto-ranging, 50-60 Hz, with PFC and

80PLUS certification

Current (maximum)

1840f/i/s: 8 A @ 100 VAC or 4 A @ 240 VAC current rating with two power cords

1830i/s and 1820i/s: 6A @ 100 VAC or 3 A @ 240 VAC current rating with two

power cords

1740i/s: 7A @ 100 VAC or 3.5 A @ 240 VAC current rating with one power cord