How to Determine the Effectiveness of a Disaster Recovery Plan

With more and more businesses and companies relying on their IT systems, having a suitable disaster recovery plan has become almost compulsory. Any downtime of critical systems could very quickly cascade into a loss of revenue, and so having a disaster recovery plan that is ready to kick in and restore these systems as quickly as possible is crucial.

In the past most disaster recovery plans pivoted around the idea of having comprehensive backups in place that could be used when anything happened. Still, the process of rebuilding a server and restoring the backups used to be rather lengthy and translate into several days of downtime. Nowadays that is no longer the case and new technology has come in that significantly improves the timeframe for full restoration – even to the point where it should take just a few hours.

It is important that you look closely at your disaster recovery plan and analyze its effectiveness from time to time. When you do, some of the areas that you should look at include:

• Location

Assuming a physical disaster occurs, it is important that any backup and recovery options that you have in play are located far enough away from your main servers that they won’t be affected. Whether it is a power outage or earthquake or some other natural disaster – the actual location of your backups does matter.

• Frequency of back-ups

Generally speaking, backing up data more frequently is better – but the actual optimal frequency will vary from company to company. Some companies may be able to get by with daily backups (i.e. losing 24 hours of data at most might not be crippling) whereas others may require a much higher frequency and need to be backed up every 15 minutes.

• Back-up integrity checks

To ensure that your back-ups are ready to use in case of a disaster, their integrity needs to be checked from time to time. Once again this will vary on a case-by-case basis, with some companies requiring an integrity check on a daily or weekly basis while others do so quarterly.

• Time to partial and full restoration

Partial restoration normally refers to restoring data to the point where the company is able to access it, whereas full restoration refers to ‘normal’ usage being restored. With virtualization, it is possible for your server to be virtualized using a data center in just a matter of hours – but not all recovery plans will allow for this.

As you can see, analyzing the effectiveness of a disaster recovery plan could have a huge effect on whether or not you’re able to get your server up and running as soon as possible while minimizing (or eliminating) the loss of important data. While it is true that disaster recovery will incur some additional costs, when you consider the fact that it is balanced out against the risk of severe downtime that could affect your revenue then it is easy to put it into perspective.

Apple Invention Uses Spherically Curved Photosensor for Smaller, Better iPhone Camera

Apple’s Curved Photosensors – Smaller iPhone Cameras

Latest Apple patent discloses that the Cupertino Company would soon employ curved photosensors in creating smaller iPhone cameras which can capture improved photos. The design would aid Apple in its task of making the forthcoming smartphone much thinner.

The U.S, Patent and Trademark Office had recently published `Small form factor high-resolutions camera’ describing a cutting edge mobile camera module which utilises complex optics in delivering a much compact footprint with enhanced performance digital shooter suitable for placement in iPad and iPhone.

This exclusive arrangement offers a comparatively small ray fan spot size for all kinds of field heights at the image plane enabling a sharp low-distortion image. Apple has informed that employing curved array limits diffraction across image field, enabling smaller photosensor with equally smaller pixels. Moreover, with an axial length of two millimetres or less, the total camera package is extremely compact.

Sensor Refracts Light Through Trio Lenses

Apple has illuminated how the sensor tends to refract light through a trio of special lenses on a concave surface causing a sharp, low distortion image. The curved array limits diffraction, enables the use of smaller sensor with smaller pixels. AppleInsider has explained that to correct the diffraction as well as the visual aberration which tends to propagate within small cameras, the proposed lens system comprises of three lenses, two of which are convex or considerably convex.

A third meniscus lens or a lens with opposing convex as well as concave surfaces is placed between the first two lens components and the spherical photosensor. However the design seems to have its limitation like barrel distortion and Apple has described how it could use software in correcting the unwanted effects that tend to appear in various degrees of severity based on focal length, aperture as well as other system settings. It is not known whether Apple plans to apply its curved photosensor patent for its future iPhones since the company has relied for long on Sony’s stellar backside illuminated modules for its imaging requirements.

iPhone Thinner/Higher Battery Capacity

The patent had first been filed in 2013 and there seems to be no reason to think that Apple would be willing in replacing the Sony built imaging system already in use. Apple iPhone has been considered as having one of the best smartphone cameras all along. On the contrary, Apple has been looking for means of making the iPhone thinner with a higher battery capacity.

Credit for the patent filed goes to Xi Chen, David S. Gere and Matthew C. Waldon as its inventors. The technology could delay the unavoidable while Apple tends to cram more components in a shrinking device line-up. As in the case of every patent, there is no guarantee that this technology would show up in the near future devices though it is good to know that Apple tends to keep pushing the boundaries with its technology.

With rumours of a FaceTime camera set to make an appearance with the Apple Watch 2 this year, 2016 could probably be the year Apple may come up with one of the smallest and the highest quality cameras one has ever seen.

You can finally disable the iPhone's Default Apps

An Option for Disabling iPhone’s Default Apps

The latest versions of Apple iOS 9 enables users to delete over 30 stock apps built-in, on iPhone. It began with Stocks wherein Apple then added Maps, iBook, Watch, Health, Tips and much more. Presently there are 32 apps on the iPhone which the users are unable to erase.

Most of them seem to be necessary such as Settings, Phone and App Store while the others like Find Friends and Podcasts are seldom used by several users. For many years, user have been finding ways of deleting some of the default apps on the phone while others have accumulated them in a folder in the hope of ignoring them as much as they can.

However, there is now another option for disabling the iPhone’s default apps though it is only available to Apple developers and one may have to pay £79, together with a bit of technical confidence and a full reset of the phone. Being complicated, it recommends that Apple could eventually be ready to permit users in eliminating the default apps. Users who intend to have an easier option of removing the apps, could follow a method which enables them to do it by downloading any special software but the apps tends to return when the phone is turned off and on again,

How to Remove Default Apps

It has been revealed by Reddit user bfodder on how iPhone users who had downloaded the beta version of the new iOS 9.3 software by using a beta version of Apple’s Configurator program enabled businesses as well as school in managing the devices to get rid of stock apps. To remove the default apps one can:

•  Sign up for the iOS beta programme to enable the download of iOS 9.3 public beta, though the full release is not yet out. A full guide is provided on signing for the beta programme including backing of the device. 
•  Once done, then go to Settings > General > Software Update in order to download the iOS 9.3 beta 
•  Then download Apple Configurator 2.2 beta which needs an Apple developer membership cost of £79 
•  Users could then set up a configuration on selecting the option of `Do not allow some apps’ On entering the commands of these apps such as `com.apple.stocks’ for Stocks they can be detached from the iPhone.

System Removes Apps But Returns on Restart

This system which was introduced last year in iOS 9 tends to remove apps though they would return when the phone would restart. This is how it tends to work:

•  Put the app you intend to delete in a folder 
•  Press and hold on the apps till they begin jiggling as though you were to delete or move the app 
•  Drag the app towards the edge of the folder in order to move, so that it moves the next page of the folder, but keep the app in place when the page has been moved 
•  While holding the app, press the home button which should fly off the edge of the screen

Last year, Tim Cook, Chief executive of Apple had stated that the company had been looking for ways of allowing users to remove default apps, but some apps like Phone were linked to functions in iOS , which meant that deleting them could have resulted in problems or rendering the phone to be less capable. Though the latest iOS trick needs difficult work-around, it could be headway for the feature to be utilised more extensively

Future iPhones could feature Li-Fi, a technology 100 times faster than Wi-Fi

Li-Fi Transfer Information at Over 100 Gigabits

Due to the researchers at universities which include St. Andrew, Cambridge, Edinburgh and Strathclyde, Li-Fi has been in development for many years which uses light emitting diodes – LEDs in order to beam information through air and the same is received by a light sensor.

In 2011, Professor of the University of Edinburgh, Harald Haas had been credited with its creation, when he had demonstrated it with a flickering light from a single LED wherein he could transmit more data than a cellular tower. While the out-dated Wi-Fi has the capability of transmitting data around 7 gigabits per second –Gbps, Li-Fi test have portrayed that it can transfer information at over 100 Gbps, with theoretical productivity of 224 Gbps.

This means that high definition films can be downloaded on device through Li-fi connection within seconds. Fitting any type of light device comprising of a humble light-bulb with a microchip can transform the same into a wireless data transmission point according to Professor’s Hass in his TED talk. Presently Li-Fi is in highly progressive stage which means that it is very unlikely to feature in the iPhone 7 that is expected to be released in September.

New Li-Fi to Overtake Wi-Fi Connection

The new Li-Fi technology is being geared up to blow the prevailing Wi-Fi connection by providing speeds of up to 1 Gbps. It tends to work by transmitting information through light rather than radio waves which means that it needs light source, like an LED light bulb together with an internet connection.

The term had been introduced initially by Professor Harald Haas and is presently being tested in Europe and is expected to be available to consumers within four years. The possibility of the technology is that it is restricted in its present form as visible light is unable to travel through walls and a device is needed to be within direct sight of a receiver, within a radius of about three meters. It also means that it could only be utilised in rooms that are lit.

According to Spectrum IEEE, devices in future would be capable of sidestepping this limit by using a tracking as well as location system which means that a user can place a laptop at a spot on a table and allow the system to locate it and create a link.

Pilot Project in Various Industries

Presently, Estonian company Velmenni is testingthe product and it has stated that it has been tested in an office as well as in an industrial space. Deepak Solanki, Chief executive had informed International Business Times that they were doing a few pilot projects in various industries wherein they could use the visible light communication – VLC technology.

Presently a smart lighting solution for industrial environment has been designed wherein the data communication is being done through light. A pilot project with a private client is also being done where setting up a Li-Fi network in order to access the internet in their office space. But the system seems unlikely to completely replace Wi-Fi and it could be utilised along with the prevailing technologies in order to provide more efficient systems.

How to Secure the Notes App on iOS 9.3

iOS Update – Features Like Night Shift

A preview of the upcoming iOS update had been announced by Apple recently. Included in the forthcoming iOS 9.3 update, Apple has been adding features like Night Shift which it states would help you to fall asleep easily in spite of staring at the screen after sunset.

Apple is attempting in helping users to get better rest at night with Night Shift which is a setting that tends to change the colours on the screen at night. Researchers are of the belief that the blue light produced by LED screens tends to stop the production of melatonin, the hormones which informs our brain to sleep. Changing from bright white and blue undertones to warmer colours is considered to be easier on the eyes enabling the body to fall asleep naturally.

Other features comprise of enabling multiple users accounts on an individual iPad, CarPlay improvements together with the ability to password protect personal musings in the Notes app can be located in the update. With the option to protect a note, probably comprising of details of bank account number, health information of perhaps a daily diary, it feels like it should have been in the Notes app from the beginning.

Secure Note in the Notes App

Though it is not so, Apple intends fixing the same. Users need to be aware that in order to lock a note they would have to be using the developer or public beta preview of iOS 9.3. One could learn more on the risks of running a beta version of an iOS on their device and where to sign if one intends to do so, by visiting the beta page of Apple. Those already on iOS 9.3 or planning to do so, the following needs to be done in order to secure a note in the Notes app:

• At first, begin by selecting a note, if one would like to lock down using a password of Touch ID 
• Tap on the share button towards the upper-right hand area 
• Opt for Password Protect Note from the list of options

Presently available as Developer Preview

Should it be the first time of selecting this option, the password would be needed and a hint to the password. Observe the warning below the password unit.User would be unable to access any secured notes on non-iOS 9.3 or Mac OS S 10.11.4, also in beta devices. If one prefers to use Touch ID in addition to a password, the switch should be left in the `On’ position.

On the other hand, one could set up or change the Notes password by introducing the Setting app on the iOS device and go to Notes > Password Protection. Here you could also change the password for your Notes, if desired. Using the password set, the next time the Password Protect Note is selected from the share menu, the note would be placed behind your password and you will be able to identify which notes seem to be protected while viewing the list of notes in your account due to a lock icon seen below the title.

Presently the iOS 9.3 is made available as a developer preview which means that it is not fully completed. No information has been provided about its arrival on the iPhone or iPad, though Apple naturally releases a preview only a few months prior to the final version.