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Capacity
Interface
Interface Transfer Rate
Average Transfer Rate
Included Disks
Rotational Speed (rpm)
Cache
RAID Modes
Protocols
Data Channels
Video Channels
Daisy Chain
Power
Cables Technology
Cooling
Acoustic
Power Supply
Dimensions (WxHxD)
Weight
System Requirements
Box Content
Comments
10TB 20TB 25TB
Dual 10Gb/s Thunderbolt™ ports for daisy chaining
Up to 10Gb/s
785MB/s read, 695MB/s write*
5x swappable hard disks
7200rpm
64MB or greater
Preconfigured RAID 0 array
RAID 1 / JBOD configuration using Mac® OS Disk Utility
Data: PCI Express
Video: Dual-Mode DisplayPort
10Gb/s independent uplink and downlink
10Gb/s independent uplink and downlinks
Up to six Thunderbolt technology-compatible devices including LaCie Thunderbolt series products, other Thunderbolt technology-compatible devices, and LaCie professional displays
Low power mode allows for daisy chaining
Thunderbolt cables
Aluminum enclosure
Noctua® magnetic levitation cooling fan: high-performance, quiet, zero-vibration
Standby: Negligible
Idle: 25-28dBA
Operating: 25-29dBA**
100-240Vca; 47/63Hz
6.8 x 8.6 x 7.7 in. / 173 x 220 x 196 mm
7.6 kg / 16.8 lbs.
• Computer with a Thunderbolt port
• Mac OS X 10.6 or greater
• LaCie 5big Thunderbolt Series
• External power supply
• Thunderbolt cable
• CD with User Manual and software (Intego® Backup Manager Pro)
• Quick Install Guide
* Tests conducted in RAID 0 with five 4TB 7200rpm drives. Speeds depend on the drives and RAID mode used, and average transfer rates may vary from one computer to another and from one product to another.
** These measurements have been made under normal conditions, one meter/three feet from the front of the product. It may vary with conditions and product configuration.

1TB (Terabyte) = 1000GB. 1 GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less).

Model Number:
LAC301997

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Use the LaCie 4big/5big Spare Drive for LaCie 4- and 5-drive DAS products to replace a failed drive, or to have on hand in case of future drive failure.

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Model Number:
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Model Number:
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Use the LaCie 4big/5big Spare Drive for LaCie 4- and 5-drive DAS products to replace a failed drive, or to have on hand in case of future drive failure.

Where to Buy