Nexsan E60 RAID Array

60 disk array with Fibre channel and iSCSI host connectivity

The Nexsan E60 RAID array features the capacity for up to 180TB of data storage in a single, 4U enclosure. These OS-independent disk arrays are suitable for Tier 1 storage in many environments, and feature single or dual active/active RAID controllers, each with 4GB of battery-backed cache.

For host connectivity, each RAID controller in the Nexsan E60 features 2 x 8Gbps Fibre Channel ports and 2 x 1Gbps iSCSI ports, all of which can be used simultaneously to support multiple workloads. Balance performance with capacity with the ability to leverage SATA disk, SAS disk and SSDs for maximum flexibility.

The Nexsan E60 supports 254 volumes per systems, and up to 254 LUNs per port.

Active Capacity Disk Drawers

To maximize the reliability and ease-of-use of this disk expansion unit, the Nexsan E60 features a design layout of the disk drives being located in 3 self-contained disk drawers. Each drawer contains 20 disk bays, and tachometer -controlled push and pull fan modules. Other features of this unique design include:

• Each drawer can have a different drive type of SAS, SATA or SSD
• Use any Nexsan certified and shipping drive (SAS, SATA & SSD)
• Use any supported Nexsan RAID type (RAID 0, 1, 1+0, 4, 5 and 6)
• RAID 6 supported with a dedicated hardware accelerator
• Create multiple RAID sets within a single drawer
• Create a RAID set across two or three drawers
• Phone-home feature that notifies of system status

Nexsan’s specially-designed cables for this disk expansion unit enables drawers to be pulled out so service can be performed to disks and fan within the unit without affecting operation or availability.

Reliability, Availability, Serviceability

The design of the Nexsan E60 expansion unit includes many of the reliability features included with their other disk arrays. Features include:

• Standard dual redundant 1600 watt, 220-240v power supplies
• Redundant, individually hot-swappable disks, expansion interface modules, and fans
• Anti-Accumulative Rotational vibration design maximizes disk reliability
• Horizontal mid-plane maximizes cooling for optimal operating conditions
• RAID sets can be automatically rebuilt with hot spares
• Multi-path architecture to eliminate single points-of-failure

AutoMAID™ Green Storage Technology

Nexsan’s patented MAID (Massive Array of Idle Disks) technology, AutoMAID, is designed to provide real cost savings by reducing the energy requirements & thermal output of unused drives. This feature comes standard on all of Nexsan’s E60 disk arrays, and provides transparent cost savings without requiring any software changes. AutoMAID allows IT to choose what combination of cost savings and performance requirements fits their business needs, with four levels of “idleness”:

Level 1: at this level, disks can achieve 15% - 20% savings by unloading the head. The disks keep spinning though, providing sub-second recovery times

Level 2: achieve 35% - 45% savings by unloading the heads and slowing the disk down to 4000 RPM. At this level, recovery times average 15 seconds.

Level 3: further increase powersavings by stopping the disk spin and putting it into sleep mode, but powered on. This level provides 60% - 75% savings, and 30-45 second recovery times.

Level 4: maximize power savings by approximately 87% by powering the drive off, while still featuring 45-60 second recovery times to initial I/O requests

Data is continuously verified with Nexsan’s AutoMAID technology, which performs periodic surface scans to ensure data integrity.

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