ESDS S12E-R2251 - 10GbE iSCSI Channel Host Connections - 6G SAS Drive Channel

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Artikelcode ESDS S12E-R2251

The ESDS S12E-R2251 storage solution combines the blazing speed of 10GbE iSCSI host connectivity with 6Gb/s SAS drive support. Accommodating 12 drives and easily scalable to use a maximum of 228 drives, the dual-controller ESDS S12E-R2251 is an affordable & flexible storage solution featuring enterprise-class protection to provide your organization with a decisive competitive edge in pushing your IT efficiency to previously unattainable levels.

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Host Ports

Four 10GbE iSCSI ports (2 per controller)

Storage Controller

Dual redundant controllers

Cache Memory

Default 8GB, up to 16GB

** The default capacity may vary by region; please contact our sales representatives for details

Drive Connectivity

  • 6Gb/s SAS connectivity

  • Accommodates 3.5-inch disk drives

  • S.M.A.R.T. support

  • NCQ support

  • Automatic bad-sector reassignment

  • Dedicated bandwidth to each connected drive

  • Drive buffer on/off switch

Supported Drives

  • 2.5" SAS SSDs - 200GB or 400GB

  • 2.5" SATA SSDs* - 100GB, 200GB or 300GB

  • 2.5" 10,000RPM SAS drives - 300GB, 450GB, 600GB or 900GB

  • 3.5" 15,000 RPM SAS drives - 300GB, 450GB or 600GB

  • 3.5" 7,200 RPM Nearline SAS drives - 1TB, 2TB,  3TB or 4TB

  • 3.5" 7,200 RPM SATA drives* - 2TB, 3TB or 4TB

*MUX board required when using SATA drives

** For the latest compatibility details, please contact our sales representatives

Maximum Number of Drives

  • Per system: 12

  • Via JBOD: 228

Corresponding Expansion Enclosure

Please refer to Related Information

Form Factor


RAID Functionality

  • Global, delicated or enclosure hot-spare

  • RAID levels supported : RAID 0, 1 (0+1), 3, 5, 6, 10, 30, 50, 60

  • Online expansion by: - Adding new drives - Copying and replacing drives with drives of larger capacity

  • RAID migration

  • Configurable stripe size and write policy per system

  • Intelligent drive handling - In degraded mode: skips irreparable blocks to continue rebuild - In normal operation: data-block verification and repair

Data Services

  • Thin provisioning

  • Local replication ** - Snapshot - Volume copy/ mirror

** Available with Standard license and optional Advanced license

Green Design

  • 80 PLUS-certified power supplies delivering more than 80% energy efficiency

  • Intelligent multi-level drive spin-down

Availability and Reliability

  • Redundant, hot-swappable hardware modules

  • CacheSafe technology

  • Multi-pathing support (EonPath)

  • Device mapper support


Various event notification methods including email, LAN broadcast, fax, SNMP traps, SMS, and Skype.


  • Java-based SANWatch management software

  • RS232 serial port for local access to firmware-embedded utility

  • Automated cache flush and caching mode operation per enclosure status

  • Telnet and SSH system monitoring via Ethernet

  • Platform-independent firmware management GUI

  • LCD keypad panel for monitoring and access to all configuration options

  • Module status LED indicators: component presence detection & thermal sensors via I2C bus

OS Support

  • Windows Server 2003

  • Windows Server 2008, 2008 R2 (including Hyper-V)

  • RedHat Enterprise Linux

  • SUSE Linux Enterprise

  • Sun Solaris

  • VMware

  • Citrix


** For the latest OS support details, please contact our sales representatives.

Service and Support

All EonStor DS systems are shipped with 3-year Standard Service

  • Standard service: - Hardware warranty - Software update; 8x5 phone, web and email support

  • Upgrade/Extension service*: Replacement part dispatch on the next business day (up to 5 years) - Advanced Service: 24x7 phone, web and email support + onsite diagnostics on the next business day - Premium Service: 24x7 phone, web and email support + onsite diagnostics in 4 hours

* Optional ** Service may vary by region


  • Power supplies: Two 530W DC

  • AC voltage: 100VAC @ 10A to 240VAC @ 5A with PFC (auto-switching)

  • Frequency: 47-63 Hz


  • Temperature:

    • Operating: 0 to 40°C without BBU or CBM / 0 to 35°C with BBU or CBM

    • Non-operating: -40 to 60°

  • Altitude: Sea level to 3660m (12,000ft) operating / sea level to 12,192m (40,000ft) non-operating

  • Relative humidity: 5 to 95% non-condensing, operating and non-operating


Without chassis ears / protrusions: 446mm (W) x 88mm (H) x 513mm (D)


Without HDDs:17.00kg (37.48lbs)

Package Dimensions

779mm (W) x 564mm (H) x 597mm (D)


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