Why RAID is (usually) a Terrible Idea - Puget Custom Computers. One of the commonly accepted beliefs is that if you want your data to be ultra-secure, then a RAID1 array for hard drive redundancy is the best route.
This an area where the first hand data we have accumulated gives me a very strong argument to the contrary. As we sell hundreds of computers a month, our self-built administrative systems log every single failed piece of hardware and trouble ticket we open. With this, we can see hard data on how often hard drives fail, and how often a RAID array has problems. This is really useful information to look at! Here is the data I have for our hard drive sales in the last year, where we have sold at least 200 units: When I look at those numbers I see excellent reliability. Unfortunately, it is not as clear of a number when it comes down to how many RAID failures there have been. The real question is: Is RAID1 really worth being 15-20 times more likely to have a problem? Install Ubuntu 14.04.1 LTS. 1 Using a DVD?
It’s easy to install Ubuntu from a DVD. Here’s what you need to do:Put the Ubuntu DVD into the DVD-driveRestart your computer. You should see a welcome screen prompting you to choose your language and giving you the option to install Ubuntu or try it from the DVD.If you don’t get this menu, read the booting from the DVD guide for more information.Using a USB drive? Networklessons.com - Cisco R&S, Wireless, Linux and Security. CCNP SWITCH Archives - Page 2 of 5 - Networklessons.com. TDW_130_Prezo. 9780133929485.pdf. How to Change the Dynamic NAT Configuration. Introduction Sometimes you receive these messages when you change the Network Address Translation (NAT) configuration: Dynamic mapping in use, cannot remove Dynamic mapping in use, do you want to delete all entries?
%Pool outpool in use, cannot destroy This document demonstrates how to change the NAT configuration if you receive these messages on the console. Prerequisites Requirements There are no specific requirements for this document. Components Used This document is not restricted to specific software and hardware versions. Conventions For more information on document conventions, refer to Cisco Technical Tips Conventions. Problem Description Dynamic NAT creates active translation entries in a table when a packet crosses from an IP NAT inside interface to an IP NAT outside interface, or vice versa. If a translation entry matches, then the %Dynamic Mapping in Use, Cannot remove message or the %Pool outpool in use, cannot destroy message are respectively echoed on the console. Solutions. Static NAT-PT for IPv6 Configuration Example.
IPv6_Transition_Mechanisms_Ripe_07092011_v1.2. IPv6 Static NAT-PT configuration. Static NAT-PT for IPv6 Configuration Example. Static NAT-PT for IPv6 Configuration Example. This documentation has been moved - Implementing NAT-PT for IPv6 [Support] Translating Between IPv6 and IPv4 - Cisco IOS Cookbook, 2nd Edition. Revealing & Backing Up Your Windows 8 – Windows 8.1 Pro License Product Key. Backing up your Windows License Product Key is essential for reinstallation of your Windows 8 or Windows 8.1 operating system.
In some cases, the Genuine Microsoft Label or Certificate Of Authenticity (COA) containing the product key, is placed in an area not easily accessible by users e.g inside the battery compartment in newer ultrabooks/laptops, making it difficult to note the product key. In this article, we’ll show you how to easily download and store your Windows License Product Key inside a text file with just two clicks! The information displayed under the System Information page in Windows 8 and Windows 8.1 (including professional editions), includes the Windows edition, system hardware (CPU, RAM), Computer name and Windows activation status. The Windows activation status section shows us if the product is activated or not, along with the Product ID: Figure 1. Product Keys and Product IDs are two completely different things, despite the similarity of the terms.
Figure 2. Cisco ASA Series CLI Configuration Guide, 9.0 - Configuring Remote Access VPNs [Cisco ASA 5500-X Series Next-Generation Firewalls] Cisco ASA Firewall Fundamentals 3rd Edition - Harris Andrea. "Probably the most updated and practical Cisco ASA tutorial out there...
" Third Edition - New Content Added April 28, 2015 Written By: This ebook has been recently updated to cover the newest ASA version 9.x and also all configurations will work on the new 5500-X Next Generation ASA models. LAN-to-LAN VPN on an ASA 5505. Today we're going to look at LAN-to-LAN VPNs using the pair of ASA 5505s in the community lab.
LAN-to-LAN VPNs are typically used to transparently connect geographically disparate LANs over an untrusted medium (e.g. the public Internet). Here we'll see how to configure a simple L2L VPN as pictured in the below topology in a few simple steps. Initial Configurations interface Vlan1 nameif outside security-level 0 ip address 172.16.1.2 255.255.255.252 ! KB0000050 - Cisco ASA 5500 Site to Site VPN (From CLI) KB ID 0000050 Dtd 17/09/14 Problem You want a secure IPSEC VPN between two sites.
Solution Note: There have been a number of changes both in NAT and IKE on the Cisco ASA that mean commands will vary depending on the OS that the firewall is running, make sure you know what version your firewall is running (either by looking at the running config or issue a "sho ver" command).