Buying Guide

NAS gateway product snapshots

Rather than relying on the internal (captive) storage found in a NAS appliance, a NAS gateway

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offers file-based accesses to external storage on a disk array -- or a SAN, where users can take advantage of superior performance and reliability while maintaining a level of simplicity. Since storage is moved off of the NAS device, interoperability and connectivity are crucial issues, and virtualization is increasingly important for superior scaling and utilization of the storage resources. The product snapshots in this chapter highlight key specifications for a cross section of major NAS gateway products. The following products were selected based on input from industry analysts and SearchStorage.com editors, and specifications are current as of August 2007.

The following specifications have been provided by vendors and are periodically updated. Vendors are welcome to submit their updates and new product specifications to Matt Perkins.

Go to the first product snapshot, or select the desired product below:

  • EMC Corp.; EMC Corp.; Celerra NS40G/NS80G NAS gateway
  • EMC Corp.; EMC Corp.; Celerra NSX NAS gateway
  • Hewlett-Packard Co.; HP StorageWorks EFS Clustered Gateway
  • IBM; N5000 Gateway
  • IBM; N7000 Gateway
  • Neopath Networks Inc.; File Director 220 gateway
  • Neopath Networks Inc.; File Director 7200 gateway
  • Network Appliance Inc.; V-Series NAS gateway
  • ONStor, Inc.; ONStor, Inc.; Bobcat Series NAS Gateway
  • Sun Microsystems Inc.; StorageTek 5320 NAS Gateway

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    Product Snapshot #1
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    Product: EMC Corp.; Celerra NS40G/NS80G NAS gateway

    Internal Storage: The EMC Celerra gateway systems exclusively use external storage via a SAN connection to an EMC CLARiiON and Symmetrix storage systems.
    External Storage: The NS40G supports up to 32 TB usable capacity per system. The NS80G supports up to 60 TB usable per system.
    Data Throughput: Maximum data throughput is dependent on system configuration and operating environment. For specific configuration and performance information, see the EMC systems listed on www.spec.org.
    RAID Support: The Celerra gateway systems provide multiple RAID levels and disk types in a single array, and support RAID levels 1, 3, 5, 6 and 10, depending on the storage platform.
    Onboard Cache: The NS40G has up to 8 GB of cache; the NS80G has up to 24 GB
    Management Tools: Management: EMC Celerra Manager (Base or Advanced edition), Standard Microsoft Management tools (share management, quotas etc), Celerra specific Microsoft Management Console snap-ins, Command Line Interface, EMC Control Center, Management frameworks such as HP Open View and Tivoli via SNMP support; Archiving: Celerra FileMover (compatible with EMC and 3rd party HSM applications such as EMC Disk Extender for NAS, EMC Rainfinity, EMC Centera File Archiver, Arkivio auto-stor and Enigma Data Systems SmartMove) Business Continuity and Availability: Celerra Replicator, Celerra SnapSure; Resource Management: Celerra Automated Volume Management with Thin Provisioning, Celerra Manager, Celerra Multi-Path File System (MPFS/MPFSi), Smarts Storage Insight for Availability; Anti-virus: EMC Celerra Anti-Virus, compatible with many standard external AV Engines such as MacAfee, Symantec etc.
    Backup Features: Backup is through support of the standard NDMP protocol, or network backups via multiple commercially available backup products, such as EMC NetWorker, Symantec NetBackup, CommVault Galaxy, HP OpenView, Atempo Time Navigator, IBM Tivoli Storage Manager (TSM) and many others. Replication is supported as part of the back end CLARiiON and Symmetrix storage systems.
    Operating System: The Celerra products support NAS and iSCSI access from clients running UNIX, Windows, Linux, Novell (iSCSI only), Mac (NAS only)
    File Systems Supported: The Celerra system ships with a proprietary filesystem which supports multi-protocol access. From a client perspective, the filesystem appears to be native Windows (CIFS) or UNIX/Linux (NFS)
    Network Protocols Supported: NFS v2, v3, v4, CIFS, FTP, SNMP, NDMP, NTP, SNTP, TFTP, iSCSI
    Connectivity: NS40G: 4 Copper Gigabit Ethernet ports per blade or 2 Copper and 2 Optical GigE per blade, maximum 8 ports; NS80G: 6 copper and 2 optical GigE ports per blade, 10GbE optical port connectivity add on option for a maximum of up to 36 ports.
    Form Factor: NS40G: 2U, fitting into a standard 19-inch NEMA cabinet; NS80G: 9U, fitting into a standard 19-inch NEMA cabinet
    Vendor Comment: The Celerra gateways are high-performance, full-function IP-storage platforms which deliver NAS and iSCSI capabilities to consolidate application storage and file servers. The Celerra gateway, SAN-connected to CLARiiON and Symmetrix storage, is the most cost-effective way to leverage EMC SAN environments. These capabilities distinguish Celerra technology as the ideal foundation for an IP-based information lifecycle management strategy, especially when leveraged in combination with complementary technologies from EMC to deliver policy-based file mobility and archiving (EMC DiskXtender software), dynamic file virtualization (EMC Rainfinity software), performance optimization (EMC MPFSi software), advanced network management (EMC Smarts software), information classification and IT service management (EMC Infoscape software ), and IP-based fixed content storage (EMC Centera systems).
    Availability: Currently available
    Base Cost: U.S. list pricing for EMC Celerra Gateways begins at $33,000 USD
    Detailed Specs: http://www.emc.com/celerra
    Vendor URL: www.emc.com

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    Product Snapshot #2
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    Product: EMC Corp.; Celerra NSX NAS gateway

    Internal Storage: The EMC Celerra gateway systems exclusively use external storage via a SAN connection to an EMC CLARiiON and Symmetrix storage systems.
    External Storage: The NSX supports up to 168 TB usable per system
    Data Throughput: Maximum data throughput is dependent on system configuration and operating environment. For specific configuration and performance information, see the EMC systems listed on www.spec.org.
    RAID Support: The Celerra gateway systems provide multiple RAID levels and disk types in a single array, and support RAID levels 1, 3, 5, 6 and 10, depending on the storage platform.
    Onboard Cache: The NSX has up to 28 GB
    Management Tools: Management: EMC Celerra Manager (Base or Advanced edition), Standard Microsoft Management tools (share management, quotas etc), Celerra specific Microsoft Management Console snap-ins, Command Line Interface, EMC Control Center, Management frameworks such as HP Open View and Tivoli via SNMP support; Archiving: Celerra FileMover (compatible with EMC and 3rd party HSM applications such as EMC Disk Extender for NAS, EMC Rainfinity, EMC Centera File Archiver, Arkivio auto-stor and Enigma Data Systems SmartMove) Business Continuity and Availability: Celerra Replicator, Celerra SnapSure; Resource Management: Celerra Automated Volume Management with Thin Provisioning, Celerra Manager, Celerra Multi-Path File System (MPFS/MPFSi), Smarts Storage Insight for Availability; Anti-virus: EMC Celerra Anti-Virus, compatible with many standard external AV Engines such as MacAfee, Symantec etc.
    Backup Features: Backup is through support of the standard NDMP protocol, or network backups via multiple commercially available backup products, such as EMC NetWorker, Symantec NetBackup, CommVault Galaxy, HP OpenView, Atempo Time Navigator, IBM Tivoli Storage Manager (TSM) and many others. Replication is supported as part of the back end CLARiiON and Symmetrix storage systems.
    Operating System: The Celerra products support NAS and iSCSI access from clients running UNIX, Windows, Linux, Novell (iSCSI only), Mac (NAS only)
    File Systems Supported: The Celerra system ships with a proprietary filesystem which supports multi-protocol access. From a client perspective, the filesystem appears to be native Windows (CIFS) or UNIX/Linux (NFS)
    Network Protocols Supported: NFS v2, v3, v4, CIFS, FTP, SNMP, NDMP, NTP, SNTP, TFTP, iSCSI
    Connectivity: NSX: 6 Copper and 2 Optical Gigabit Ethernet ports per blade and 1 10 GigE Optical, maximum 72 ports
    Form Factor: NSX: Comes with cabinet, 75 in. height, 24 in. width, 41.5 in. depth
    Vendor Comment: The Celerra gateways are high-performance, full-function IP-storage platforms which deliver NAS and iSCSI capabilities to consolidate application storage and file servers. The Celerra NSX gateway, SAN-connected to CLARiiON and Symmetrix storage, has industry leading performance and advanced N+1 clustering to delvers data center class IP storage capabilities. These capabilities distinguish Celerra technology as the ideal foundation for an IP-based information lifecycle management strategy, especially when leveraged in combination with complementary technologies from EMC to deliver policy-based file mobility and archiving (EMC DiskXtender software), dynamic file virtualization (EMC Rainfinity software), performance optimization (EMC MPFSi software), advanced network management (EMC Smarts software), information classification and IT service management (EMC Infoscape software ), and IP-based fixed content storage (EMC Centera systems).
    Availability: Currently available
    Base Cost: U.S. list pricing for EMC Celerra Gateways begins at $33,000 USD
    Detailed Specs: http://www.emc.com/celerra
    Vendor URL: www.emc.com

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    Product Snapshot #3
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    Product: Hewlett-Packard Co.; HP StorageWorks EFS Clustered Gateway

    Internal Storage: Up to 2.4 TB using 8 300 GB SAS disks
    External Storage: Over 1000TB of external SAN storage. The EFS Clustered Gateway is compatible with any SAN storage.
    Data Throughput: Up to 6 GB/s
    RAID Support: Yes; Supported RAID Levels: 0, 1, 5, 1+0
    Onboard Cache: 4 MB
    Management Tools: HP Systems Insight Manager, HP Storage Essentials
    Backup Features: Snapshots, replication, remote copy. The EFS Clustered Gateway is also supported by every major backup software vendor.
    Operating System: Windows Server 2003R2, Windows Storage Server 2003R2, Suse Linux 9
    File Systems Supported: PolyServe File System
    Network Protocols Supported: FTP, NFS, CIFS, HTTP
    Connectivity: 1Ge, 10Ge, 4 Gb Fibre Channel
    Form Factor: 2U
    Vendor Comment: The HP EFS Clustered Gateway is a high performance file server that provides high availability and scalable performance. It leverages existing and/or new heterogeneous SAN storage or iSCSI storage for either Linux or Windows.
    Availability: Currently available
    Base Cost: $30,000 USD
    Detailed Specs: http://h18000.www1.hp.com/products/storageworks/efs/index.html
    Vendor URL: www.hp.com

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    Product Snapshot #4
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    Product: IBM; N5000 Gateway

    Internal Storage: No internal storage other than cache, all storage is external.
    External Storage: Up to 84 TB
    Data Throughput: Not provided
    RAID Support: RAID levels depend on capabilities of attached external storage
    Onboard Cache: Up to 8 GB
    Management Tools: SecureAdmin, FilerView, FlexVol, AutoSupport, FlexShare, reports into major higher level management products
    Backup Features: SnapVault, SnapMirror, NDMP/NFS/CIFS/iSCSI
    Operating System: Data ONTAP
    File Systems Supported: WAFL (Write Anywhere File Layout)
    Network Protocols Supported: NFS V2/V3/V4 over UDP or TCP; PCNFSD V1/V2 for (PC) NFS client authentication; CIFS; VLD; FTP; HTTP 1.0, HTTP 1.1 virtual hosts
    Connectivity: Up to 8 2Gb Fibre Channel (4 Gbps available) and 8 1Gb Ethernet
    Form Factor: 19" rackable, 3U or 6U depending on model
    Vendor Comment: The IBM System Storage N5200 and N5600 storage controller gateways each include have a Model G10, a single-node base unit, and the Model G20, a clustered, high-availability, dual-node base unit. They are designed to support entry-level and midrange customers requiring Network Attached Storage (NAS), Internet Small Computer System Interface (iSCSI) and Fiber Channel Protocol (FCP) attach.
    Availability: Currently available
    Base Cost: US list $34,650 to $54,450 depending on model and number of nodes
    Detailed Specs: http://www-03.ibm.com/systems/storage/network/n5000/gateway/
    Vendor URL: www.ibm.com

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    Product Snapshot #5
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    Product: IBM; N7000 Gateway

    Internal Storage: No internal storage other than cache, all storage is external
    External Storage: Up to 504 TB
    Data Throughput: Not provided
    RAID Support: RAID levels are provided by the attached external storage
    Onboard Cache: Up to 4 GB
    Management Tools: SecureAdmin, FilerView, FlexVol, AutoSupport, FlexShare, reports into major higher level management products
    Backup Features: SnapVault, SnapMirror, NDMP/NFS/CIFS/iSCSI
    Operating System: Data ONTAP
    File Systems Supported: WAFL (Write Anywhere File Layout)
    Network Protocols Supported: NFS V2/V3/V4 over UDP or TCP; PCNFSD V1/V2 for (PC) NFS client authentication; CIFS; VLD; FTP; HTTP 1.0, HTTP 1.1 virtual hosts
    Connectivity: Up to 16 2Gb Fibre Channel (4 Gbps available) and 12 1Gb Ethernet
    Form Factor: 19" rackable, 6U or 12U depending on model
    Vendor Comment: The IBM System Storage N7600 and N7800 storage controller gateways each include have a Model G10, a single-node base unit, and the Model G20, a clustered, high-availability, dual-node base unit. All models are designed to provide fast data access, simultaneous multiprotocol support, expandability, upgradability, and low maintenance requirements.
    Availability: Currently available
    Base Cost: US list $113,500 to $170,000 depending on model and number of nodes
    Detailed Specs: http://www-03.ibm.com/systems/storage/network/n7000/gateway/
    Vendor URL: www.ibm.com

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    Product Snapshot #6
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    Product: Neopath Networks Inc.; File Director 220

    Internal Storage: Six 146GB Ultra SCSI disks
    External Storage: Not provided
    Data Throughput: Up to 50,000 IOPS
    RAID Support: RAID-5
    Onboard Cache: Not provided
    Management Tools: Web-based management GUI via HTTPS or a command-line interface via SSH. An SNMP MIB is also provided.
    Backup Features: Not provided
    Operating System: NetApp, EMC, Solaris, Windows, Linux
    File Systems Supported: Not provided
    Network Protocols Supported: NFS, CIFS
    Connectivity: 6 GbE ports
    Form Factor: 2U
    Vendor Comment: NeoPath's File Director family of file virtualization appliances helps organizations utilize file storage more effectively. The File Director 220 with SMARTtouch software, create a virtualized namespace that enables companies to implement heterogeneous global namespace, perform non-disruptive file migrations, consolidate file servers and aggregate storage servers across departmental-level to enterprise data centers.
    Availability: Currently available
    Base Cost: $45,000 USD
    Detailed Specs: http://www.neopathnetworks.com/products
    Vendor URL: www.neopathnetworks.com

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    Product Snapshot #7
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    Product: Neopath Networks Inc.; File Director 7200

    Internal Storage: Two 73 GB SAS disks/blade
    External Storage: Not provided
    Data Throughput: Up to 500,000 IOPS
    RAID Support: RAID-1
    Onboard Cache: Not provided
    Management Tools: Web-based management GUI via HTTPS or a command-line interface via SSH. An SNMP MIB is also provided.
    Backup Features: Not provided
    Operating System: NetApp, EMC, Solaris, Windows, Linux
    File Systems Supported: Not provided
    Network Protocols Supported: NFS, CIFS
    Connectivity: 4 GbE ports/blade
    Form Factor: 7U
    Vendor Comment: NeoPath's File Director family of file virtualization appliances helps organizations utilize file storage more effectively. The high-density blade-server File Director 7200, based on Dell blade server technology, with SMARTtouch software, create a virtualized namespace that enables companies to implement heterogeneous global namespace, perform non-disruptive file migrations, consolidate file servers and aggregate storage servers across departmental-level to enterprise data centers.
    Availability: Currently available
    Base Cost: $90,000
    Detailed Specs: http://www.neopathnetworks.com/products
    Vendor URL: www.neopathnetworks.com

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    Product Snapshot #8
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    Product: Network Appliance Inc.; V-Series NAS gateway

    Internal Storage: 504 TB
    External Storage: 504 TB
    Data Throughput: See test results: http://www.spec.org/osg/sfs97r1/results/sfs97r1.html
    RAID Support: Yes
    Onboard Cache: Not provided
    Management Tools: MultiStore, SnapMover, SnapDrive, SnapManager for Microsoft Exchange, SnapManager for Microsoft SQL Server, Single Mailbox Recovery, VFM (Virtual File Manager), SnapValidator, FlexClone, FlexCache. DataFabric Manager, SecureAdmin, ApplianceWatch for HP OpenView, ApplianceWatch for Tivoli, HiScan Agent for HDS HiCommand (applicable only to HDS arrays)
    Backup Features: NetApp V-Series systems support a range of data protection software including: SnapRestore, SnapMirror, SnapVault, SnapLock Enterprise, LockVault Enterprise
    Operating System: Network Appliance Data ONTAP® 7G software
    File Systems Supported: FC SAN, IP SAN, and NAS
    Network Protocols Supported: File and block
    Connectivity: Not provided
    Form Factor: 6U and 12U
    Vendor Comment: NetApp V-Series systems seamlessly integrate into mission-critical enterprise class SAN infrastructures, allowing users to deliver NAS as well as block solutions, while dramatically increasing utilization of your infrastructure. Companies gain the advantages of enterprise Fibre Channel storage connectivity without the costs of physically connecting each host to the SAN infrastructure, thereby optimizing storage usage and preserving future scalability. The NetApp V-Series product line also supports a broad range of IBM, Hitachi Limited, and HP storage subsystems, including the IBM Enterprise Storage Server (ESS) series, IBM TotalStorage DS4000 series, Hitachi Limited SANRISE, and HP StorageWorks XP series.
    Availability: Currently available
    Base Cost: Pricing varies based on deployment
    Detailed Specs: http://www.netapp.com/products/v-series/
    Vendor URL: www.netapp.com

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    Product Snapshot #9
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    Product: ONStor, Inc.; ONStor, Inc.; Bobcat Series NAS Gateway

    Internal Storage: No internal storage. Nodes are completely stateless
    External Storage: 40,000 TB, SATA, SATA, or FC disk from ONStor, EMC, HDS, 3PAR, HP, Compellent, Xiotech, Nexsan
    Data Throughput: Up to 300GB/sec per node, 2.4GB/sec per cluster
    RAID Support: RAID is supported on external storage
    Onboard Cache: 2 GB to 8 GB
    Management Tools: Single-pane-of-glass graphical user interface manages entire cluster; includes capacity and performance reporting, and remote monitoring and support capabilities.
    Backup Features: Snapshot, disk-to-disk data replication, NAS system replication, including replication of virtual servers.
    Operating System: Client support includes Windows, Unix, Linux, Mac
    File Systems Supported: Integrated 64 bit file system; 100TB/file system; up to 400 file systems per cluster.
    Network Protocols Supported: CIFS, NFS
    Connectivity: Four GigE ports, two 2Gb FC ports
    Form Factor: 1U per node; 8U for a fully populated cluster
    Vendor Comment: Industry's broadest storage interoperability; incorporates virtualization that enables completely non-disruptive growth from 1 node to 8 node clusters.
    Availability: Currently availability
    Base Cost: Starts at $20,000 USD including all required software
    Detailed Specs: http://www.onstor.com/bobcat_series.php
    Vendor URL: www.onstor.com

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    Product Snapshot #10
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    Product: Sun Microsystems Inc.; StorageTek 5320 NAS Gateway

    Internal Storage: Not provided
    External Storage: Supports the following arrays: ST6140, ST6540, SE6130, ST6920, SE9970, SE9980, ST9985, ST9990, FLX 210, 240, 280, 380. Capacity is as per the back-end array specifications.
    Data Throughput: Not provided
    RAID Support: RAID-5 (all StorageTek 5000 Family models)
    Onboard Cache: Memory 4 GB DDR1/400 ECC registered DRAM
    Management Tools: Intuitive, browser-based GUI Interface with wizard-driven menus; Optional CLI; Sun StorageTek Compliance Archiving software addresses the most stringent regulatory requirements for electronic storage media retention and protection.
    Backup Features: Not provided
    Operating System: Not provided
    File Systems Supported: File system 64-bit journaling file system, checkpoints, online extensible/expandable capacity, NTFS streams support, quotas: user, group, and directory tree, Unicode
    Network Protocols Supported: CIFS/SMB, NetBIOS, NFS v2 and v3, FTP Block access protocol iSCSI target; Directory and name services ADS (LDAP, Kerberos v5), NT 4.0 multiple master; domains (MMD), DNS, WINS, NIS, NIS+, local files; Network services DHCP, NTP, RDATE, network status monitor
    Connectivity: Four standard 10/100/1000 BaseT Ethernet ports; Up to 2 optional dual-port 10/100/1000 BaseT or Optical Gigabit Ethernet NICs; One optional Ultra 320 SCSI multimode (SE/LVD); Two USB ports (bottom for UPS connection, top for factory use only); Five internal PCI-X 64 bit (3 available for expansion); Two dual-port 2-Gb/sec FC HBAs
    Form Factor: Enclosure Fits into a standard 19-inch rack
    Vendor Comment: Not provided
    Availability: Not provided
    Base Cost: Not provided
    Detailed Specs: Not provided
    Vendor URL: www.sun.com

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    This was first published in August 2007

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