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  Aberdeen XDAS FX-Series - 2U 24Bay Hybrid Flexible Host DAS

XDAS D-Series 2U

VMware Ready

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XDAS FX21m/FX22m

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  • Overview
  • SFF Design
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XDAS FX-Series - Modular Host Design

Based on your needs and budget, select from 8Gb/s or 16Gb/s Fibre Channel, 1Gb/s or 10Gb/s iSCSI (either SFP+ or RJ-45), or 12Gb/s or 6Gb/s SAS host interfaces. The wide choices allows for great flexiblity in this product line. A company on a budget can start off with cheaper gigabit technology and later when they are able to afford faster technology they can swap modules for Fibre or 10G iSCSI. Host interface modules can be easily swapped and upgraded, making the new XDAS FX more future-proof than any of our prior DAS products.

Opening the server storage bottleneck

12Gb/s SAS to the server marketplace creates solutions that eliminate data bottlenecks in sizable storage environments.

Hybrid Storage Consolidated SAN-Tiers with Powerful Scalability

The new XDAS FX-Series Hybrid model features both modular host ports and four 1GbE iSCSI host ports per controller. This combination enables SMBs to deploy FC SANs delivering outstanding price-performance and achieve highly cost-effective remote replication with the iSCSI ports. The enterprise-class data protection and exceptional performance of the XDAS FX-Series Hybrid powered by the next-generation RAID engine is ideal for mission-critical environments. When data grows out of the capacity threshold of a single subsystem, you can scale it up to an installation housing more than one hundred drives through expansion enclosures. The no-delay, smooth operations it enables can satisfactorily meet the service levels your business requires. Coupled with the broad support for enterprise-level OS and server virtualization, it can serve as data storage for top-tier applications.

High Speed Performance and Flexible Scalability

Discover new standards of storage performance with up to 1.3M IOPs and 5,500 Mbps throughput. XDAS FX systems are excellent platforms for database and VDI applications thanks to ample computing power, and their massive bandwidth serves to enhance media editing and surveying jobs, freeing you from bottlenecks. When looking to expand storage, up to an extra 360 drives can be connected easily using appropriate JBOD enclosures. You get access to as much as 1,440TB space, with each drive up to 4TB in size. (all-cache-hit).

High-Availability SAN Delivers Great Price/Performance

Data availability is critical to any business operation. XDAS FX-Series features high availability hardware design with redundant, hot-swappable components, such as RAID controllers, power supplies and cooling fans, to eliminate single point of failure. RAID protection ensures data accessibility during drive failure. In the event of a power outage, CacheSafe technology will automatically leverage power of the Battery Backup Unit (BBU) to safeguard cached data by writing it to the flash module for permanent retention.

Intuitive and Easy Management

Storage management should be simple. The XDAS FX-Series storage solution includes a comprehensive management software suite, SANWatch, to centrally manage multiple D-Series subsystems over a standard TCP/IP network. Status and event information summary can be viewed on the portal window. Necessary functions to configure, manage and monitor the D-Series are only a few clicks away. Besides providing all firmware features through a user-friendly GUI, SANWatch also supports script-based configuration of multiple XDAS subsystems simultaneously. Automatic critical event notifications can be customized to suit the most critical storage environment. SANWatch will guide users through initializing, configuring and maintaining the system every step of the way.

High Energy Efficiency

Contributing to environmental sustainability, the XDAS FX-Series storage solution enables energy cost-savings while maintaining performance. It is equipped with power saving designs such as high-efficiency power supplies, dynamic cooling mechanism and intelligent multi-level drive spin-down technology.

Higher Reliability and Better Performance:

2.5-inch Small Form Factor Disk Drives are designed for environment requiring higher reliability and higher I/O density. The benefits of 2.5" disk drives are obvious:

  • 70% smaller: Think about the estimated $1000 cost per square foot in an average data center. Now you can install 2.5 times of hard drives in the same data center footprint.
  • Consumes 40% less power: In addition to cost reduction, less power means a cooler enclosure, and therefore a higher overall reliability.
Lower Total Cost of Ownership: Compact in Size:

SFF 2.5-inch disk drives are simply smaller than their 3.5-inch counterparts. That means more disk drives can be integrated in the disk array enclosures. For example, an Aberdeen XDAS 2U enclosure houses 24 2.5-inch disk drives while the same number of 3.5-inch disk drives requires a 4U-profile enclosure. This density edge dramatically improves space utilization efficiency.

Power Consumption and Heat Generation:

SFF 2.5-inch disk drives consume 45% less power than their 3.5-inch counterparts. They run cooler with reduced airflow requirements, which also decrease the chance of encountering thermal issues and the cost on providing airflow ventilation.

Shock Tolerance:

Shorter and stiffer actuator, smaller discs, and a compact motor increases its tolerance to shock and vibration, and hence more reliable in operation.

Less Vibration When Spinning: Spinning multiple drives in a RAID enclosure can introduce interference from the seek acceleration by one drive seeking data to another that is writing. The transmitted vibration can cause retries and hence the overall array performance can be affected. In a high-transaction rate and random-access environment with intensive seek operations, the potential performance loss can be mended by 2.5-inch disk drives. 2.5-inch drives do not generate sufficient vibration during seeks to degrade the overall performance.
Host Port Options
(per controller)
  • Dual 16Gb/s Fibre Channel ports
  • Quad 8Gb/s Fibre Channel ports
  • Dual 10Gb/s iSCSi ports (SFP+ or RJ-45)
  • Quad 1Gb/s iSCSI ports
  • Dual 12Gb/s SAS ports
  • Dual 6Gb/s SAS ports
  • Four (4) 1GbE iSCSI ports on each controller
    Drive Interface 6Gb/s SAS connectivity
    Accommodates 2.5-inch HDD
    S.M.A.R.T. support
    NCQ support
    Automatic bad-sector reassignment
    Dedicated bandwidth to each connected drive
    Drive buffer on/off switch
    Controller DAS-FX22m: Dual Redundant (ESDS 3024RT2B)
    DAS-FX21m: Single (ESDS 3024GT2B)
    Form Factor 2U Rackmount
    RAID functionality Global, Dedicated or Enclosure hot-spare
    RAID levels supported: RAID 0, 1 (0+1), 3, 5, 6, 10, 30, 50, 60
    Online expansion by either adding new drives or copying and replacing drives with drives of larger capacity
    RAID migration
    Configurable stripe size and write policy per array
    Intelligent drive handling:
    In degraded mode: skips irreparable blocks to continue rebuild
    In normal operation: data-block verification and repair
    XDAS FX-Series now supports up to a 512TB single logical drive
    Management 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
    Green Designs Power supplies delivering more than 80% of energy efficiency
    Dynamic cooling mechanism
    Smart drive spin-down
    System Components CS8348 ESDS 3024RT2B
    Two (2) host board slots
    (host boards are necessary and can be chosen in configurator)
    Four (4) 8GB DIMM modules
    Two (2) redundant 530W power supply units
    Two (2) redundant cooling modules 
    Twenty-four (24), hot-swappable drive trays
    Two (2) pre-installed Cache Backup Modules (CBM), each including one Li-Ion battery backup unit (BBU) and one Flash Backup Module (FBM)
    CS8347 ESDS 3024GT2B
    One (1) host board slot
    (host board is necessary and can be chosen in configurator)
    Two (2) 8GB DIMM modules
    Two (2) redundant 530W power supply units
    Two (2) redundant cooling modules 
    Twenty-four (24), hot-swappable drive trays
    One (1) optional Cache Backup Module (CBM), including one Li-Ion Battery Backup Unit (BBU) and one Flash Backup Module (FBM)
    (without chassis ears/protrusions)
    446mm (W) x 88mm (H) x 527mm (D)

    Without HDDs:19.58kg (43.17lbs)

    Features Benefits
    Multiple host interface options + Two iSCSI ports per controller Choose 8Gb/s or 16Gb/s Fibre Channel, 1Gb/s or 10Gb/s iSCSI, or 12G or 6Gb/s SAS based on your needs and budget
    Hybrid XDAS models feature 4x1GbE iSCSI ports per controller
    Optional dual controllers Fast failover performance and high data availability
    Scalability Expand storage to 1,440TB using an extra 360 drives via JBOD enclosures
    Automated storage tiering
    Using SSD, accelerate performance up to three times compared to all-spin storage
    Secure remote replication
    128-bit encrypted backup to offsite locations provides very reliable and safe disaster recovery
    Tiered event messages Clear and easily actionable system notifications keep you informed and in control
    Smart media scan Works in the background to enhance data integrity and prevent corruption
    Thin provisioning Improve storage utilization up to 80% - get more for your investment
    Multi-target snapshot With up to 4096 targets, always have backups to recover vital data at different points in time
    Multi-pair volume copy/mirror Up to 64 pairs ensure entire volumes can be backed up with minimal effort as data grows
    SANWatch 3.0 interface User friendly browser-based deployment and management
    Intelligent drive spin-down and 80 PLUS power supplies Lower costs through reduced power draw and longer drive lifespan


    Local Replication

    In business-critical environments, users require strong protection for their valuable data sets. To help users protect data in the most efficient way, local replication leverages the power of XDAS storage systems to provide snapshot and volume copy/mirror capabilities. With space-saving snapshot copies, users can easily restore files or rollback data as necessary. With the full data copies, users can quickly restore service when a RAID-protected volume fatally fails.

    Included Local Replication
    Snapshot Snapshot images per source volume: 64
    Snapshot images per system: 1024
    Volume Copy Source volumes per system: 16
    Replication pairs per source volume: 4
    Replication pairs per system: 64
    Advanced Local Replicaition Option
    Snapshot Snapshot images per source volume: 256
    Snapshot images per system: 4096
    Volume Copy Source volumes per system: 32
    Replication pairs per source volume: 8
    Replication pairs per system: 256



  • Immediately use disk-based full data copies to support applications when source
    data volume fails; constantly mirrored copies minimize data loss
  • Restore files and roll back data in seconds; data is protected from accidental or
    malicious losses to ensure the highest system availability
  • Data protection
    with snapshots
    Instantly take point-in-time data images and use them as granular recovery points
    while consuming minimum disk space and performance by storing only data changes
    Flexible data
    copy deployment
    Split and re-sync mirroring between source and copy as business needs require;
    flexibly leverage independent copies of production data for secondary applications

    Remote Replication Option

    Remote replication leverages the power of storage systems to copy data between storage pools or systems in IP or FC SAN at different sites. When source data fails due to system malfunction or accidents, users can leverage the disk-based remote copy to restart service in minutes. If users would like to transfer responsibility back to the source, it can be quickly synced with the remote copy for only differentials. To further ensure the integrity of the remote data, remote replication allows users to protect the remote copy with snapshot technology. Granular snapshot images can help restore the corrupt remote copy in seconds when it is required to resume business service.



    Minimized unplanned downtime Reduce recovery time after system failures; intact data copies at remote sites can be immediately used to support applications
    Flexible data
    copy protection
    Synchronous and asynchronous options for IP and FC SAN; users can split and
    re-sync the mirroring between source and copy as needed and take snapshots
    for remote data to enhance protection

    data protection

    Achieve enterprise-class protection at affordable price points; companies with tight budgets do not need to compromise on data protection
    Data compression Leverage data compression for asynchronous remote replication for increased

    Automated Storage Tiering

    By enabling users to flexibly assign applications to four available tiers distinguished by different drive types and RAID levels, automated storage tiering provides an architecture that fully leverages the advantages of different storage media, including SSDs for high-performance data storage. With automated storage tiering, users can greatly optimize storage performance and increase ROI. As part of automated storage tiering, data is migrated between tiers based on data usage patterns and user-configured policies. With tiering implemented on the sub-volume level, data can be moved in a highly granular fashion. Data migration achieves efficient distribution of data, and ensures that SSDs and other high-performance drives have the necessary storage space to deal with mission-critical applications.



    storage deployment
    By assigning applications to different tiers consisting of different drive types and RAID levels, users can easily meet wide variety of service level requirements
    storage performance
    SSDs are used most efficiently in an automated storage tiering architecture to optimize performance by up to 150% at no additional costs compared to a non-tiered configuration

    Highly efficient
    data migration

  • Based on data usage patterns, migration ensures optimized distribution of data in storage pools
  • Sub-volume tiering ensures highly granular data movement
  • Scheduling options ensure data migration can be conducted based on actual user requirements
  • Ensures SSDs have the necessary space to serve mission-critical applications
  • Simplified
    Automated features help IT managers spend much less time on assigning applications to storage media and migrating data

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