User manual ZYXEL NSA-2401

[. . . ] NSA-2401 Network Storage Appliance User's Guide Version 1. 00 11/2008 Edition 1 DEFAULT LOGIN LAN1 IP Address LAN2 IP Address Username Password 192. 168. 1. 3 192. 168. 100. 3 admin 1234 www. zyxel. com About This User's Guide About This User's Guide Intended Audience This manual is intended for people who want to configure the NSA using the Web Configurator. Related Documentation · Quick Start Guide The Quick Start Guide is designed to help you get up and running right away. It contains information on setting up your network and configuring for Internet access. · Web Configurator Online Help Embedded web help for descriptions of individual screens and supplementary information. [. . . ] The more sectors the hard drive has to reallocate, the slower read and write speeds become. A failure in the mechanical positioning system, such as servo damage or a thermal widening of the disk, results in seek errors. An increasing number of seek errors indicate the condition of the disk surface and the mechanical subsystem are worsening. This is an average performance indicator for the seek operations of the magnetic heads. The raw value lists the total number of hours (or minutes, or seconds depending on the manufacturer). This is the number of attempts to spin up to fully operational speed the hard drive has made when the first attempt did not succeed. An increase in this value is an indicator of hard disk mechanical subsystem problems. This is the number of times recalibration was requested when the first attempt did not succeed. A decrease in this value is an indicator of hard disk mechanical subsystem problems. 06 07 Read Channel Margin Seek Error Rate 08 Seek Time Performance Power-On Hours (POH) Spin Retry Count High 09 Low 10 Low 11 Recalibration Retries High NSA-2401 User's Guide 155 Chapter 6 Storage Screens Table 42 S. M. A. R. T. Attributes (continued) ID 12 13 190 190 ATTRIBUTE NAME Device Power Cycle Count Soft Read Error Rate Airflow Temperature Temperature Difference from 100 G-sense error rate Power-off Retract Count Load/Unload Cycle Temperature Hardware ECC Recovered Reallocation Event Count Low Low High BETTER DESCRIPTION This is the number of times the hard drive has gone through a full power on and power off. This is the number of uncorrected read errors the hard drive has reported. This indicates the temperature of the airflow measured by a Western Digital hard drive. Manufacturers can set a minimum threshold that corresponds to a maximum temperature. This is the number of load and unload cycles into head landing zone position. This is the time between ECC (Error Correction Code)-corrected errors. The raw value is the total attempts to move data from reallocated sectors to a spare area. If the sector is later successfully written or read, this value decreases and reallocation is not performed. This can be difficult to test since only direct I/O writes to the disk cause reallocations, not cached writes. This is the number of errors reading or writing a sector that were not correctable. An increase in this value is an indicator of disk surface defects or mechanical subsystem problems. This is the number of data transfer errors through the interface cable according to the ICRC (Interface Cyclic Redundancy Check). This is the total number of errors in writing sectors. 191 192 193 194 195 196 Low Low Low Low High Low 197 Current Pending Sector Count Low 198 Uncorrectable Sector Count UltraDMA CRC Error Count Write Error Rate / Multi-Zone Error Rate Soft Read Error Rate Data Address Mark Errors Run Out Cancel Soft ECC Correction Thermal Asperity Rate (TAR) Flying Height Low 199 Low 200 Low 201 202 203 204 205 Low Low Low Low Low This is the number of read/write head off-track errors. [. . . ] Note Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any kind to the purchaser. You may also refer to the warranty policy for the region in which you bought the device at http://www. zyxel. com/web/ support_warranty_info. php. [. . . ]