ATA-over-Ethernet
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EtherDriveSR1521
Rackmount and Tower

Product Information (Tower)
Product Information (Rackmount)

Summary

• The SR1521 bridges 15 disks to an Ethernet network as individual disks or as one or more RAID sets
• Internal RAID controller allows disks to be assembled into RAID sets including RAID 0,1,5,10 and concatenated/linear combinations
• EtherDrive ® Storage provides unlimited block storage, enabling simple Storage Area Networks using Ethernet
• Logical disks can be shared by multiple servers
• Storage access > 60MB/sec
• Simple command line interface
• Syslog status messages
• MAC filtering restricts disk access to authorized servers only
• EtherDrive ® Storage uses the AoE protocol now included as part of every Linux kernel
• AoE drivers are available for Linux, FreeBSD, Solaris and Windows Operating Systems.
• Dual Gigbit Ethernet connections
• Up to 500 GB per SATA1 or SATA2 disk
• Up to 7.5 TB per 3U shelf
• Hot swap disks, fans and power supplies

A New Type of Networked Storage

Coraid is proud to introduce the EtherDrive ® SR1521 storage platform, a new way to implement true networked storage. EtherDrive ® Storage is Direct Network Attachment (DNA) block storage. DNA moves a disk drive onto a network connection. Servers connect to DNA Storage via ordinary Ethernet connections. DNA uses the open ATA-over-Ethernet (AoE) protocol. AoE is simpler than the iSCSI protocol and does not require TCP/IP processing or expensive network adapters. EtherDrive ® Storage is directly accessible and shared by Servers on the network. Disks inside the EtherDrive ® Storage platform can be assembled into RAID sets and presented as logical EtherDrive ® devices. Servers can mount these block devices and use them just as if they were local disk drives. Storage can be freed and reattached to a new server without having to move disks or cables.

Unlimited Storage

Users can install their own SATA disk drives. The SR1521 storage appliance accepts any standard SATA or SATA2 disk. As disk higher density disks become available new SATA disks can be installed quickly and easily. There are no limits to how many disks can be attached to a single Server. There are no constraints to how big an EtherDrive ® Storage array can be expanded. Since each EtherDrive ® Storage platform has its own GigE connections, the storage array performance increases directly proportional to the number of devices in the array. Each time a new EtherDrive ® Storage platform is added to the storage system, more processing power is added and therefore throughput and IOPS performance of the storage system is also increased.

Low Cost Networked Storage

EtherDrive ® Storage is less expensive than any other networked storage. The storage costs for traditional Storage Area Networks (SANs) are very high. Fibre Channel switches and Host Bus Adapter (HBA) interfaces are expensive, take up a lot of space, and require costly system administration. EtherDrive ® Storage eliminates all that by being a very simple and affordable Ethernet based Direct Network Attachment.

Easy to Install, Easy to Grow

A simple command line interface allows you to create disk RAID sets. JBOD and RAID levels 0, 1, 5, 10 can be used. You can also expand a RAID set by concatenating RAID sets. You can assign hot spare disks that will automatically backup a failed disk. UDP status messages are used to update the host’s syslog.

Performance You Want

Since EtherDrive ® Storage is a Direct Network Attachment (DNA), you can have any performance you wish just by adding the Ethernet that matches your requirements. Storage access speed is over 60 MBytes/sec. Standard Linux RAID and LVM software can stripe multiple storage platforms into a single high speed volume. Access to this volume can span multiple SR1521 platforms themselves consisting of RAID sets, providing an aggregate bandwidth limited only by the host system configuration. The EtherDrive ® Storage architecture gives unprecedented configuration flexibility.

Small on the Outside, Large on the Inside

A single 3U EtherDrive ® SR1521 storage platform holds up to 15 SATA disks for a capacity of 7.5TB of data when using 500GB drives, making it one of the most dense disk arrays currently available.

EtherDrive ® Storage Security

MAC address filtering allows the storage appliance to restrict access to disks based upon host MAC addresses. With MAC address filtering, only hosts with allowed MAC addresses can access specified logical volumes within the SR1521.

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