MaxNAS Owner’s Guide October 2008 www.MicroNet.
Table of Contents Table of Contents Table of Contents ................................................................................................................................................. 2 FCC Compliance Statement ................................................................................................................................ 4 Warranty Information .....................................................................................................................................
Table of Contents 5. System Control Functions ....................................................................................................................... 36 5.1 Remote Notification Configuration ............................................................................................... 37 5.2 Event Logs ...................................................................................................................................... 37 5.3 System Time ............................
FCC Compliance Statement Federal Communications Commission Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
Warranty Limitations of Warranty and Liability MicroNet Technology has tested the hardware described in this manual and reviewed its contents. In no event will MicroNet or its resellers be liable for direct, indirect, incidental, or consequential damage resulting from any defect in the hardware or manual, even if they have been advised of the possibility of such damages.
Welcome Welcome From MicroNet Technology We are pleased that you have chosen the MaxNAS. Our systems are designed for speed, reliability, compatibility, and performance. We think you will find the system easy to install, and a productive addition to your computer system. Please take a moment to register your product online at www.MicroNet.com.
1-Getting Started Chapter 1- Getting Started Thank you for purchasing The Micronet MaxNAS storage solution. With speed, high capacity, ease of use, and support for numerous applications, MaxNAS is the ideal solution for all of your data storage needs. Please take advantage of the information contained within this manual to ensure easy setup and configuration. If at any time you require technical assistance, Micronet’s Help Desk is available at 310-320-0772 or email us at Support@micronet.com 1.
1-Getting Started 3. Unpacking the MaxNAS Please unpack your MaxNAS in a static free environment, carefully making sure not to damage or discard any of the packing material. If the RAID subsystem appears damaged, or if any items of the contents listed below are missing or damaged, please contact your dealer or distributor immediately. In the unlikely event you may need to return the MaxNAS for repair or upgrade, please use the original packing material to ensure safe transport. 4.
1-Getting Started 6. The MaxNAS interface components The following figures illustrate the connector locations for the RAID subsystems.
1-Getting Started 7. Visual and Audible Indicators The MaxNAS has an LCD panel, LEDs, and a buzzer to inform the user of the overall health and function of the unit. The following chart describes the various conditions indicated: Indicator Normal Status Firmware LED LAN1 LED LAN2 LED USB Copy LED System Error LED Glows amber at boot or firmware update. Dark after. Blinks green when there is network activity on the LAN 1 port. A steady green glow means there is a link but no activity.
2-Connecting the MaxNAS Chapter 2- Connecting the MaxNAS 1. Connect Your MaxNAS Place on a flat and stable surface capable of supporting at least 25lbs, and close enough to the available network jack to reach with an Ethernet cable. Step 1. Remove the disk canisters from the packing material and carefully insert into the MaxNAS. Step 2. Secure each canister into position and push the latch until it snaps into place. Step 3. Connect the provided power cord into the universal power socket on the back panel.
2-Connecting the MaxNAS 2.1 Wizard Installation and Usage ! IMPORTANT! The setup wizard uses TCP port 10000 and UDP ports 11000-11001 For communication. If you are using a software firewall, please make sure to unblock those ports in order for the wizard to get access to the MaxNAS. 2.1.1 Macintosh OS X The wizard application for Mac OS X is located on your MaxNAS CD in the “wizards” folder. You may launch the wizard directly from the CD, or you can copy it to your Applications directory.
2-Connecting the MaxNAS 2.1.3.3 You may change the password by entering a new “New Password” field, and re-enter the password (case sensitive) in the “Confirm Password” field. Click End to conclude the wizard session. 2.2 Launching the IP Storage Administration GUI, DHCP Environment ! Windows hosts can access the MaxNAS via WINS. Mac OS X and *nix based workstations may not support WINS and would require your network administrator to provide the newly assigned IP address before accessing the MaxNAS. 2.2.
2-Connecting the MaxNAS 3. LCD Operation The MaxNAS is equipped with an LCD on the front for easy status display and setup. There are four buttons on the front panel to control the LCD functions: Up (▲), Down (▼), Enter (↵) and Escape (ESC) keys. The following table illustrates the keys on the front control panel: Icon ▲ ▼ ↵ ESC Function Up Button Down Button Enter Escape Description Select the previous configuration settings option. Select the next configuration settings option.
2-Connecting the MaxNAS 4. Adding External Disks The MaxNAS has two rear USB ports, one front USB port, and one eSATA port for attaching external storage devices such as the Fantom Drives G-Force Megadisk lines of products, formatted in FAT32 or NTFS. Please note that NTFS volumes will be available in read only mode. The MaxNAS supports up to 6 external storage devices.
3-Administering the MaxNAS Chapter 3- Administering the MaxNAS This chapter describes the menu and control structure for your MaxNAS. The RAID subsystem configuration utility is firmware-based and its operation is independent of host computer type or operating system.
3-Administering the MaxNAS The Main Menu Configuration Tree 1. Status 2. Storage Configuration 3. Network Configuration 4. Accounts and Permissions 5. System Configuration MaxNAS Owner’s Manual 1.1 System Status Information 1.2 USB Printer 1.3 Monitored UPS Status 1.4 Wake-on-LAN Configuration 1.5 Scheduled Power-On Configuration 1.6 Product Information (About) 2.1 Disk Information 2.2 RAID Configuration 2.3 Folder (Shares) Configuration 2.4 Filesystem check 2.5 Stackable iSCSI Host Mode 2.
3-Administering the MaxNAS 1. Status Displays 1.1 System Status The Status window contains the basic system functionality indicators including current CPU load, uptime, disk information and health, and running services. To view the System Status, select “System” from the Status Menu. 1.2 System Information This field is the verbose description that will describe this particular MaxNAS. To access the System Information definition field, select “Info” from the Status Menu.
3-Administering the MaxNAS 1.4 Attached UPS Monitor Status The MaxNAS will monitor and respond to UPS status messages from a compatible attached UPS (for a list of compatible devices, please see appendix D.) To access the UPS monitoring control , select Status -> UPS. The following table describes the options available. To confirm settings, click Apply . Item Description UPS Monitoring Enable or disable UPS monitoring. Manufacturer Choose the UPS manufacturer and model number from the dropdowns.
3-Administering the MaxNAS 2. Storage Configuration The storage configuration menu contains the following submenus: • Disks (Informational) • RAID • Folder (Share) • File System Check • iSCSI stacked target host control • ISO disk image mounting service • nSync Task Configuration • Advanced Options 2.
3-Administering the MaxNAS as a single RAID5 volume (See Chapter 5, Understanding RAID, for more information on RAID and RAID levels.) The following is a description of each information element: Item Description Select Used to select the current RAID volume. Master RAID The RAID volume currently designated as the Master RAID volume. ID ID of the current RAID volume. Each volume must have a unique ID RAID Level Shows the current RAID configuration. Status Indicates status of the RAID.
3-Administering the MaxNAS 2.2.2 Expanding NAS volumes To expand the network accessible space of a RAIDset to take over unused space, select the desired RAIDSet and click RAID Config on the RAID information screen (see above, section 2.2.) The RAID Configuration page will appear. Click Expand . The Expand RAID Space screen will appear. Select the new percentage of the resulting volume to be used for network access. Remaining space may be allocated for iSCSI or USB target mode.
3-Administering the MaxNAS 2.2.5 Delete RAIDSet To Delete a RAIDset, Select the desired RAIDSet and click RAID Config on the RAID information screen (see above, section 2.2.) The RAID Configuration page will appear. Click on Remove RAID and confirm the operation in the following confirmation dialog. 2.2.6 Space Allocation To control space allocation for Target USB and iSCSI volumes, Select the desired RAIDSet and click Space Allocation on the RAID information screen (see above, section 2.2.
3-Administering the MaxNAS 2.3 Folder (Share) Configuration The Folder Screen, accessible through Storage -> Folder, allows you to create and configure folders on the RAID storage volume. The interface windows contains the following elements: http://maxnas/adm/getform.html?name=share RAID ID The RAIDset housing the share folder Folder name Displays the name of the Share folder. Description Provides a description of the Folder. (NFS) Button Click (NFS) to to configure NFS access.
3-Administering the MaxNAS 2.3.2 Editing Folders (Shares) Share properties can be modified by clicking the Edit button corresponding to the share. The Edit Folder Interface Contains controls for the following elements: RAID ID Select the RAIDSet to use for the share from the pulldown list Folder name Enter the name of the Folder. Description Provide a description the Folder. Browseable Whether the share will be visible when the MaxNAS is viewed through “network browsing”.
3-Administering the MaxNAS 2.3.4 Access Control Lists Folder permissions are controlled via ACLs (Access Control Lists.) To access and edit ACL ACLs, click corresponding to the folder required. The Access control screen will appear. This screen allows you to configure access to the selected Folder for the users and groups. Select a user or a group from the left hand column Deny , Read Only , or and then click Writable to configure their access level.
3-Administering the MaxNAS 2.5 Stackable iSCSI Host Service The MaxNAS can aggregate up to 5 iSCSI targets and offer all networking services to those targets, regardless of where the storage is located physically. To access the Stackable Host Service control, navigate to “Storage” -> “Stackable” and the Stack Target List screen will appear. In this screen you can add, edit existing or remove mount points. A B C 2.5.
3-Administering the MaxNAS Please refer to section 2.5.1 of this chapter for more information. 2.5.4 Delete a Stackable shared iSCSI mount To delete an stackable shared iSCSI mount, click Delete corresponding to the desired iSCSI mount. A confirmation dialog box will appear. Click OK to remove the mount, or Cancel to abort. ! WARNING: Deleting a Stackable shared iSCSI mount will erase all data on it! 2.5.
3-Administering the MaxNAS 2.7 nSync Backup Service nSync is an FTP compatible synchronization method that allows backup and restoration of a share folder to another MaxNAS Target or any FTP server. When using nSync between two MaxNAS units, the synchronization also supports secure encryption. nSync can scheduled to run once, daily, weekly, or monthly. The available bandwidth for nSync tasks can be limited to reduce impact on network availability.
3-Administering the MaxNAS 2.7.4 Running an nSync backup task A task will launch automatically as scheduled, but may also be launched manually by checking the checkbox next to the task name to run and clicking Start in the action section. The “Last Status” section will display a button labelled In Progress and will change to Success when the backup is complete. Click either In Progress or Success at any time to launch a window with the log of the task. 2.7.
3-Administering the MaxNAS 3.1.2 Domain Suffix The Domain Name refers to your DNS network suffix. This value is necessary for proper DNS or Active Directory network participation. Consult your network administrator for more information regarding this value. 3.1.3 MAC Address A unique Media Access Control (MAC) address. This value is not modifiable. 3.1.
3-Administering the MaxNAS 3.2 LAN2 Configuration The LAN Configuration screen for the LAN2 Interface allows for the following controls: Jumbo Frame Support IP Address Netmask DHCP Server When you are ready to commit changes click Apply . 3.2.1 MAC Address A unique Media Access Control (MAC) address. This value is not modifiable. 3.2.
3-Administering the MaxNAS 3.3.1 SMB/CIFS The Server Message Block network protocol is the most widely used network protocol. It is used by all variants of the Microsoft Windows operating system, Apple Macintosh OS X, and most Unix and Linux variants include support for it even if using a different networking protocol. You may enable or disable SMB/CIFS support by navigating to “Network” -> “Service.” Click Apply to complete the operation. 3.3.
3-Administering the MaxNAS IP based network to manipulate files on another computer on that network regardless of which operating systems are involved (if the computers permit FTP access.) There are many existing FTP client and server programs, and many of these are free. You may enable or disable FTP server support as well as supported file character set language by navigating to “Network” -> “FTP.” Click Apply to complete the operation. 3.3.
3-Administering the MaxNAS • ADS Server Name: Specifies the AD domain controller or NT PDC. • ADS Realm: Specifies the fully qualified ADS realm (Domain). • Administrator ID/password: Domain administrator credentialsrequired for permission to join an Active Directory. Consult your network administrator for assistance with joining the MaxNAS to an Active Directory. When all fields have been entered, click Apply to begin the authentication process. See “Appendix C- Active Directory” for more information. 4.
3-Administering the MaxNAS 4.3.1 Creating Users To create a new user, click Add in the User Configuration screen. In the following screen (see illustration right) enter the new username, password in the “Password” and “Confirm” fields, and assign group membership by selecting the desired groups from the “Group List” pane and clicking the button. Please note that spaces, slashes or commas are not valid for user names. Click Apply to finalize the action or Back to abort. 4.3.
3-Administering the MaxNAS 5.1 Remote Notification Configuration The MaxNAS features an SMTP manager and can send email notifications for various subsystem conditions in addition to the audible buzzer. The following table discuss each attribute’s descriptions. Enable or Disable system beeper that beeps when a problem occurs. Enable or Disable e-mail notification of system problems.
3-Administering the MaxNAS 5.4 Save/Recover System Setting When all configuration options for the MaxNAS are entered and the unit is functioning correctly, it is recommended that you save your system settings to a settings file for safekeeping. Should the MaxNAS ever have to be reformatted or reset, you will then be able to retrieve all your settings, users, groups, and permissions from this file. To access the Save/Recover System Settings screen, select “System” -> “Config Mgmt.
3-Administering the MaxNAS 5.8 Change Administrator Password To change the administrator password or the LCD access password navigate to “System” -> “Administrator Password” and the Administration password screen appears. Enter the new password in the “New Password” field and re-enter the password (case sensitive) in the “Confirm Password” field. When both fields are entered click Apply to confirm. 5.9 Reboot/Shutdown To cleanly shut down or reboot the MaxNAS navigate to “System” -> “Reboot and Shutdown.
4-Connecting Users Chapter 4- Connecting Users Once the MaxNAS has been configured with storage, shares, users, groups, and permissions it is ready to accept user connections. The MaxNAS supports SMB/CIFS network services as well as Webdisk/Secure Webdisk user connections. This chapter includes discussion on both of those services and connection methods. 1. SMB/CIFS User Access Configuration SMB shares are accessible from Windows 95 and newer, OS-X 10.2 and newer, and most Unix/ Linux based workstations.
4-Connecting Users 1.2 Mapping a Network Drive (OS-X) The simplest method to locate and connect your MaxNAS to an OS-X workstation is by using the Finder Network browser. If you can’t locate the computer or server within the network browser, you may be able to find it by typing its network address in the Connect to Server dialog, accessible from the “Go” -> “Connect to Server” Finder menu option.
4-Connecting Users 2. Using Webdisk The MaxNAS provides a WebDisk function that allows you to access the system over the Internet from any browser. ! IMPORTANT: Make sure that WebDisk Support or Secure WebDisk Support is enabled in the Service Support screen in the system’s Network menu. Please see chapter 3, section 3.3.2 for more information 2.1 Logging In Webdisk can operate normally (unsecured) or in secured mode.
4-Connecting Users 2.2 The Webdisk control interface The webdisk interface consists of the following elements: Name Displays the names of folders and files. Size Shows the size of folders and files. Type Displays the type of folders and files. Modified Shows the time of most recent modification of folders and files. Change user password Logout from the webdisk session. Files are accessible for download by clicking them. 2.
4-Connecting Users 3. Using iSCSI iSCSI allows two devices to negotiate and then exchange SCSI commands using IP networks. iSCSI takes a popular high-performance local storage bus and emulates it over wide-area networks, creating a storage area network (SAN). Unlike some SAN protocols, iSCSI requires no dedicated cabling; it can be run over existing switching and IP infrastructure. As a result, iSCSI is often seen as a low-cost alternative to Fibre Channel which requires dedicated infrastructure.
4-Connecting Users 3.1.4 On the iSCSI Initiator Properties window, select the Targets tab. With the iSCSI target highlighted, click Log On . The Log On to Target dialogue will appear. To enable a persistent connection, check the “Automatically restore this connection” checkbox. If you have not enabled OK CHAP authentication on the MaxNAS click . If you have enabled CHAP, click Advanced . Under Advanced Settings check the CHAP login information checkbox and enter your username and password.
4-Connecting Users 3.1.6 Right-click on the iSCSI volume. If it’s not initialized a red “No Entry” logo will cover the disk icon. Right click on the disk and select “Initialize Disk.” Follow the on-screen instructions. 3.1.7 Right click the initialized volume (The area right of the disk icon.) In the context menu select “New Partition.” Follow the on screen instructions. In the File System pop-up menu, select NTFS. The default formatting option is Full format.
4-Connecting Users 3.2.4 Select the MaxNAS IQN from the target list and click Log On . The iSCSI connection screen will appear. If you enabled CHAP, enter your CHAP username and password in the CHAP security area (ss illustrated). Click Connect to complete the operation. 3.2.5 Launch the “Disk Utility” application located under Applications/Utilities folder. 3.2.6 Highlight your new drive and select the “Partition” tab 3.2.7 Select the new partition map type. 3.2.
4-Connecting Users 4. File Backup With nSync You can backup a share folder to another MaxNAS or MicroNet PlatinumRAID (Nsync target) or any FTP server. When using Nsync between Nsync devices, you have the option to transmit files securely. To backup files regularly, you can set up a scheduled synchronization task to run only once, daily, weekly, or monthly. You can also limit the bandwidth of your Nsync tasks, so other users on the network can share the bandwidth equally.
4-Connecting Users 4.3 Setting Up an Nsync Target on Another Device If you selected “Other Device” when setting up your Nsync task, the MaxNAS will use the FTP protocol to back up the share folder. On the external storage device, make sure there is a folder named “nsync”, and the Auth ID has writable permission in that folder. 4.
4-Connecting Users 5.2 Windows Vista To set up the Printer Server in Windows Vista, follow the steps below: 5.2.1 Open Printer Folder from the Control Panel. 5.2.2 Click . 5.2.3 Select Add a network, wireless or Bluetooth printer. 5.2.4 Select The printer that I want isn’t listed. You can press The printer that I want isn’t listed to go into next page without waiting for Searching for available printers to finish.
4-Connecting Users 5.2.5 Click Select a shared printer by name. In the address entry box, type http://:631/printers/usbprinter in the box, where is the IP address or Netbios name of the MaxNAS. Click Next . http://:631/printers/usb-printer 5.2.6 Select or install a printer click OK . You can choose to set this printer as the default printer by checking the Set as Next the default printer box. Click to continue. Click Finish . Your printer is ready to use! 5.
5-Understanding RAID Chapter 5- Understanding RAID The MaxNAS controller subsystem is a high-performance SATA drive bus disk array controller. When properly configured, the RAID subsystem can provide non-stop service with a high degree of fault tolerance through the use of RAID technology and advanced array management features. The RAID subsystem can be configured to RAID levels 0, 1 (0+1), and 5.
5-Understanding RAID RAID 1 (Disk Mirroring) RAID 1, also known as “disk mirroring”, distributes duplicate data simultaneously to pairs of disk drives. Pros: RAID 1 offers extremely high data reliability as all the data is redundant. If one drive fails, all data (and software applications) are preserved on the other drive. Read performance may be enhanced as the array controller can access both members of a mirrored pair in parallel.
5-Understanding RAID RAID 6 Also known as dual parity, RAID 6 is similar to RAID 5, but offers double the fault tolerance by performing two parity computations on overlapping subsets of the data. RAID 6 offers fault tolerance greater that RAID 1 or RAID 5 but only consumes the capacity of 2 disk drives for distributed parity data. RAID 6 is an extension of RAID 5 that uses a second independent distributed parity scheme.
6-Troubleshooting Chapter 6- Troubleshooting Daily Use Tips • Read this User’s Guide carefully. Follow the correct procedure when setting up the device. • Additional application software may have been included with your drive. Please review the documentation included with this software for information on the operation and support of this software. The documentation can usually be found in an electronic format on the included CD. • Always operate your drive on a steady, level surface.
6-Troubleshooting Resetting the MaxNAS Should the MaxNAS become inaccessible (blinking fault light, forgotten password) or if directed by MicroNet support, please follow the below procedure to reset the MaxNAS to factory default: 1. If the unit is functioning, ping the MaxNAS from the host to obtain its IP address. Write down the IP address. 2. Shut down the MaxNAS and disconnect the Ethernet cable(s) 3.
6-Troubleshooting Frequently Asked Questions Q: I Forgot the Login or Password A: If you forget your network IP address or your password, you can reset the MaxNAS to its default settings. Please see “Resetting your MaxNAS” in the troubleshooting section. Q: I forgot my IP Address/I can’t find the MaxNAS on the network! A: The current IP Address for both LAN1 and LAN2 will be displayed on the LCD screen.
6-Troubleshooting Q: What is the warranty period for MaxNAS? A: MaxNAS standard warranty is One-year limited. Optional extended warranty and overnight exchange programs are available, consult your MicroNet dealer or visit www.MicroNet.com for additional information. Q: My Stackable Share is empty! Where’s my data? A: The connectivity between the MaxNAS and the iSCSI target shared may have been disrupted, and has not been re-established automatically.
A-Getting Help Appendix A: Getting Help If you experience problems with your MaxNAS, please contact your Authorized MicroNet Reseller for assistance. If the reseller is unable to resolve your issue, please contact MicroNet’s Help Desk for assistance. Please have the model, serial number, date of purchase, and reseller’s name available before making contact. If possible, call from a telephone near the system so we can direct you in any necessary system corrections. How To Contact MicroNet Technology, Inc.
B-RAID Level Comparison Table Appendix B: RAID Level Comparison Table RAID Level Span 0 1 10 5 6 Description Min. Max. Capacity Data Drives Drives Reliability Also known as disk spanning. Data 1 4 (N) No data protection is distributed sequentially to all Disks drives. There is no data protection. Also known as striping 1 4 (N) No data Data distributed across multiple Disks Protection drives in the array simultaneously.
C-Active Directory Appendix C: Active Directory With Windows 2000, Microsoft introduced Active Directory (ADS), which is a large database/ information store. Prior to Active Directory the Windows OS could not store additional information in its domain database. Active Directory also solved the problem of locating resources; which previously relied on Network Neighborhood, and was slow. Managing users and groups were among other issues Active Directory solved.
D- Support UPS List Appendix D: Supported UPS List The MaxNAS can support UPS communication with the following UPS communication protocols: SEC protocol Generic RUPS model Generic RUPS 2000 (Megatec M2501 cable) PhoenixTec protocol Safenet software The following Models have been tested and approved for compatibility: Brand Series Ablerex MS-RT ActivePower 1400VA AEC Model Notes MiniGuard UPS 700 M2501 cable Back-UPS Pro Matrix-UPS Smart-UPS APC Back-UPS 940-0095A/C cables, 940-0020B/C cables, 9
D- Support UPS List Brand Series Model Notes PowerPal P-series Fenton Technologies PowerPal L-series PowerOn PowerPure Fairstone Fideltronik Fiskars L525/L625/L750 Ares 700 and larger Other Ares models PowerRite MAX PowerServer 10, 30 All models with alarm interface MP110/210 Gamatronic MS-T MS µPS3/1 Gemini HP UPS625/UPS1000 R3000 XR R5500 XR INELT Monolith 1000LT Infosec iPEL Ippon (various) Liebert UPStation GXT2 contact-closure cable Masterguard Meta System 350, 500, 750, 1000 (v
D- Support UPS List Brand Orvaldi Series Model Notes various not 400 or 600 SMK-800A Powercom Powercom ULT-1000 TrustTrust 425/625 BNT-1000AP Advice Partner/King Pr750 BNT-2000AP PowerGuard PG-600 PowerKinetics 9001 PowerTech Power Walker Comp1000 DTR cable power Line-Interactive VI1000 Powerware Powerwell PM525A/-625A/-800A/-1000A/-1250A 3110, 3115, 5119, 5125, 5119 RM, PW5115 PW5125PW9120, PW9125, 9120, 9150, 9305 RPF525/625/800/1000 Repotec RPT-800A RPT-162A SMS (Brazil) SOLA SOLA/BASIC
E-Glossary Appendix E: Glossary Active Directory an implementation of LDAP directory services by Microsoft for use in Windows environments. Active Directory allows administrators to assign enterprise wide policies, deploy programs to many computers, and apply critical updates to an entire organization. An Active Directory stores information and settings relating to an organization in a central, organized, accessible database.
E-Glossary Disk Array A Disk Array is a logical disk comprised of multiple physical hard disks. The number of hard disks in an disk array is dictated by the type of the array and the number of spares that may be assigned to it. Furthermore, whether a disk array can be built using part of the space on a disk (as opposed to being forced to use the whole disk) depends upon the implementation. Disk Arrays are typically used to provide data redundancy and/or enhanced I/O performance.
E-Glossary by any RAID array as a backup. In the event a hard disk in a RAID array fails, this backup is automatically mobilized by the RAID controller to step in place of the failed hard disk. The data in the failed hard disk is “reconstructed” and written into the new hard disk. In the case of a RAID 1, data is reconstructed by simply copying the contents of the surviving disk into the spare.
E-Glossary be obtained by simply evaluating the XOR of the N bytes. Parity allows one error in a group (of bytes) to be corrected. Partition The space contributed to each array on a physical drive is referred to as a partition. PCI An acronym for “Peripheral Component Interconnect”. It is Intel’s local bus standard that supports up to four plug-in PCI cards per bus. Since PCs can have two or more PCI buses, the number of PCI cards they can support are a multiple of four.
E-Glossary of the disks fails, its contents can be retrieved from the duplicate disk. Furthermore, a RAID 1 array can also improve the throughput of read operations by allowing separate reads to be performed concurrently on the two disks. RAID 5 A RAID 5 array is similar to a RAID 4 array in that, it utilizes a striped set of three or more disks with parity of the strips (or chunks) comprising a stripe being assigned to the disks in the set in a round robin fashion.
E-Glossary Secondary Storage Mass storage devices such as hard disks, magneto-optical disks, floppy disks and tapes are frequently referred to as secondary storage. Secure Sockets Layer (SSL) is a cryptographic protocol which provide secure communications on the Internet. SSL provides endpoint authentication and communications privacy over the Internet using cryptography. In typical use, only the server is authenticated (i.e.
E-Glossary the favoured replication model is the HUB and SPOKE, and thus the WINS design is not central but distributed, each WINS server holds a full copy of every other related WINS system records. There is no hierarchy in WINS (unlike DNS) but like DNS its database can be queried for the address to contact rather than broadcasting a request for which address to contact. The system therefore reduces broadcast traffic on the network, however replication traffic can add to WAN / LAN traffic.
F-Product Specifications Appendix F: Product Specifications System Architecture CPU: System RAM: NVRAM: Disk Interface: Network Interface: Expansion Ports: System Displays: Disk Mechanisms: Ultra Low Voltage Intel® 1.5GHz Celeron® M Processor 512MB DDR On-board non volatile memory for firmware 5 channel SATA2-300 with NCQ drive controller Dual Gigabit Ethernet host controllers 3x USB 2.
F-Product Specifications System Features RAID level 0, 1, 5, 6, 10 and Span configurations Multiple RAID and LUN support Automatically and transparently rebuilds hot spare drives Hot swappable disk drives Disk S.M.A.R.T.
G-Licence and Copyright Appendix G: Licence and Copyright This product included copyrighted third-party software licensed under the terms of GNU General Public License. Please see THE GNU General Public License for extra terms and conditions of this license. Source Code Availability Micronet has exposed the full source code of the GPL licensed software. For more information on how you can obtain our source code, please visit http://www.micronet.
G-Licence and Copyright GNU General Public License Version 2, June 1991 Copyright © 1989, 1991 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. PREAMBLE The licenses for most software are designed to take away your freedom to share and change it.
G-Licence and Copyright contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1.
G-Licence and Copyright code or executable form with such an offer, in accord with Subsection b above.) The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable.
G-Licence and Copyright 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number.
MicroNet Techology 19260 Van Ness Ave Torrance, CA 90501 www.MicroNet.com 10-30-2008 Rev 1c The material in this document is for information only and is subject to change without notice. While reasonable efforts have been made in the preparation of this document to assure its accuracy, MicroNet Technology assumes no liability resulting from errors or omissions in this document, or from the use of the information contained herein.
