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The LG N4B1N Diskless System 4 Bay Super Multi NAS with Built-in Blu-ray Rewriter has four SATA drive bays supporting up to 4TB storage capacity. The NAS comes with a Marvell 88F5281 500MHz processor. The LG N4B1N Diskless System 4 Bay Super Multi NAS with Built-in Blu-ray Rewriter has four [[SATA]] drive bays supporting up to 4TB storage capacity. The NAS comes with a Marvell 88F5281 500MHz processor. [[File:G04-0234-2.jpg]]It uses Linux Kernel 2.6 with Samba. * It uses Linux Kernel 2.6 with Samba. * NAS (Network Attached Storage).== Usage ===== SD / USB / Memory Card Access ===Use the web admin interface and select the "Mobile Device" menu. Under the Mobile Device menu select the option "USB/Memory Card." An interface will open that looks like an orthodox file manager. Navigate your NAS storage drives and shared folders in the left pane, and your Memory Card or USB stick in the right pane. You can copy files directly back and forth. == Upgrading / Adding Drives ==The User Manual notes, "''Hard disks of size 250GB/500GB/1TB are recommended, all of which should be the same size and of the same company. If the disk sizes differ, the RAID configuration will use the smallest disk as a reference to measure all disk sizes,therefore the remainder can not be utilized and durability decreases.''"Supported Drive Type* 3.5inch SATAII HDDSpecifications* Recommend Capacity: 250GB, 500GB, 700GB, 1.0TB* Interface: [[SATA]] II (SATA 3Gb/s)* RPM: 7200* Buffer: 8MB / 16MB* Size: 88.9 mmThe [http://www.newegg.com/Product/Product.aspx?Item=N82E16822319001 LG NAS N4B1N on Newegg.com] (discontinued/out of stock).The [http://www.newegg.com/Product/Product.aspx?Item=N82E16822319001 LG NAS N4B1N] on [[Newegg.com]] (discontinued/out of stock). (''note: we do not recommend [[newegg.com]]'')LG [http://www.lg.com/ca_en/support/product/support-product-profile.jsp?customerModelCode=N4B1N&matchedModelCode=2300002181&searchEngineModelCode=N4B1N&initialTab=warranty&targetPage=support-product-profile Product Support for N4B1N]. The product information and support is not available on the LG United States site, but is available in the LG Canada English site. This product may not have been intended for the U.S. market, however, Newegg.com sold it to U.S. customers. The LG N4B2N and N4B2ND4 are the U.S. products similar to the N4B1N.LG [http://www.lg.com/ca_en/support/product/support-product-profile.jsp?customerModelCode=N4B1N&matchedModelCode=2300002181&searchEngineModelCode=N4B1N&initialTab=warranty&targetPage=support-product-profile Product Support for N4B1N]. The product information and support is not available on the LG United States site, but is available in the LG Canada English site. This product may not have been intended for the U.S. market, however, [[Newegg.com]] sold it to U.S. customers. The LG N4B2N and N4B2ND4 are the U.S. products similar to the N4B1N. See this: [http://m.lg.com/ca_en/digital-storage-devices/lg-N4B1N m.lg.com PRODUCTS > Computer Products > Digital Storage > LG N4B1N] with product specifications and support info. By Phone, Call an LG support representative <big>1.888.542.2623</big>=== Upgrading Firmware ===Source: Keltana / [[Newegg.com]] --- get the newest firmware from the german site v.4241. It provides a bit of added functionality over the the firmware included on the disk.Shove one drive in and let it configure that (no raid). Then update the firmware. After several reboots, when you have control again, delete the volume it created, shove in the rest of your disks and create the raid you want. German LG site (the NAS menus are still in english): http://www.lge.com/de/support/product/support-product-profile.jsp?customerModelCode=N4B1N&initialTab=driversUpdating the firmware to the latest (Google N4B1 firmware 3967) is a must. This takes care of a few of the problems brought up in other reviews.When upgraded to firmware 3967 it has extra options like time machine support and other fixes. You need to google N4B1 firmware 3967. Down load it from german LG site Its pretty nice. UPGRADE TO FIRMWARE 3967. NOW !!! if you want a nice machine. Do not expect any support from LG on this product. They couldn't find the side of a barn. They found any way to not give any support. If they want to compete in this segment they need to get there act together.=== Drives Larger than 1TB ===According to LG Support, drives above 1TB are not supported. However, users report success using 2TB drives.Source: MVU / [[Newegg.com]] --- installed 4x2TB (5.37TB in RAID 5), the unit detected and used the drives without problems. the manual shows 1TB as the largest drive size. === NFS Support ===Source: [[Newegg.com]] review --- NFS support, and after finding the German support site (search for 'n4b1 firmware' and look for lge.com/de/support in the url), I see that the 4241 update provides that! German firmware that provides DLNA and NFS.this is not a US based unit so don't expect support on the US lg site, you can get english support on the German site.=== Web Administration Interface: No space left on device (28) ===After entering your username and password into the web administration interface you see the following error and cannot use the interface:<small><small> Warning: session_write_close() [function.session-write-close]: write failed: No space left on device (28) in /usr/local/apache/htdocs/en/php/login_set_prms.php on line 220 Warning: session_write_close() [function.session-write-close]: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp/session) in /usr/local/apache/htdocs/en/php/login_set_prms.php on line 220 Warning: Cannot modify header information - headers already sent by (output started at /usr/local/apache/htdocs/en/php/login_set_prms.php:220) in /usr/local/apache/htdocs/en/php/login_set_prms.php on line 222</small></small>The internal storage for the unit seems to have filled up, perhaps from log files, or simply the internal storage has become faulty.<del>Update: The internal storage, which is solid state, has suffered from progressive failure. This is a hardware problem and has no known resolution beyond replacement.</del><del>Resolution: unknown Start backing up your data immediately.</del>=== Recovering Data from RAID 1 Drives when LG NAS has failed and the drives are Good ==='''NOTE: Verified successful complete data recovery using a Linux system, and mdadm.''' LG used a standard linux RAID configuration on this NAS model making compatibility and recovery a breeze. Lets first discuss the RAID 1 technology used by LG on this Linux based device. According to this [https://www.anandtech.com/show/4510/lg-n2a2-nas-review/5 Anandtech article], "The RAID implementation is the standard mirroring and there is no proprietary twist here with respect to the data duplication." This is good news meaning that you should be able to attach the mirrored pair to a system that is already running Linux in order to access the contained data.Data Recovery Tools to try:* Linux mdadm is not so much an independent tool but rather the Software RAID used by Linux* [https://www.ufsexplorer.com/ UFS Explorer] (Windows, Mac, Linux)* [https://www.cgsecurity.org/wiki/TestDisk TestDisk] is OpenSource softwareFirst looking at using mdadmBoot to linux off of a separate disk or bootable flash media and use GParted to ensure that all the disks and partitions were being correctly recognized by the OS. mdstat - use this command to see what kind of RAID is recognized.See this link: https://forum.cgsecurity.org/phpBB3/viewtopic.php?t=8138See the discussion page here for more details on a successful recovery.== NAS Operating System, Password Data, and Settings ==The first user installed harddrive on the NAS, in addition to the partition created for network share, are two hidden partitions. By hidden it is meant that they are not visible by other computers on the network to which the NAS is attached. They are not visible from the NAS display. This NAS has no VGA connection option. These two hidden partitions are for the linux operating system of the NAS. One of the partitions is ext3 and contains the typical structure of a linux installation, including all the typical directories like /etc /home and so on. The other is a swap partition.If you are locked out of your LG NAS you can explore the option of removing the drives and installing them in another Linux computer to recover data or unlock your account by modification of the /etc/passwd and shadow files.Explore the file system of the NAS via another system.* /dev/md0 on /mnt/lg1 type ext3 (rw,relatime,data=ordered) drwxr-xr-x 16 root root 4.0K Jan 20 2010 ./ drwxr-xr-x 11 root root 4.0K Feb 23 12:23 ../ drwxr-xr-x 2 root root 4.0K Jan 20 2010 bin/ drwxr-xr-x 2 root root 4.0K Jan 20 2010 boot/ drwxr-xr-x 8 root root 12K Mar 6 2000 dev/ drwxr-xr-x 10 root root 4.0K Feb 24 12:09 etc/ drwxr-xr-x 2 root root 4.0K Mar 7 2008 home/ drwxr-xr-x 3 root root 4.0K Jan 20 2010 lib/ lrwxrwxrwx 1 root root 11 Jan 20 2010 linuxrc -> bin/busybox* drwxr-xr-x 5 root root 4.0K Mar 6 2000 mnt/ drwxr-xr-x 2 root root 4.0K Jan 30 2006 proc/ drwxr-xr-x 2 root root 4.0K Jan 30 2006 root/ drwxr-xr-x 2 root root 4.0K Jan 20 2010 sbin/ drwxr-xr-x 2 root root 4.0K Mar 7 2008 sys/ drwxrwxrwx 2 root root 4.0K Mar 6 2000 tmp/ drwxr-xr-x 7 root root 4.0K Jan 20 2010 usr/ drwxr-xr-x 7 root root 4.0K Jan 20 2010 var/What file contains the network settings for the device, if those are actually stored on the first drive and not on some kind of flash memory within the mainboard? Searching for network IP addresses with rgrep we only found /etc/sss_script/diag/diag_asm.ini: TEST_IP 192.168.1.200 /etc/sss_script/diag/diag_asm.ini: HOST_IP 192.168.1.100 It is believed that the actual IP address settings for the NIC must be stored on a SSD / EPROM on the main board. [[Category:Tangible Product]]
