Over-Provisioning and SSDs

Over-provisioning is the allocating of a specific amount of free space on your SSD.  Over-provisioning improves SSD endurance and performance.   Many SSDs are packaged with software that helps the end user install the drive and to plan for OP.  (More advanced drives are doing away with OP).

The SSD controller manages all of the data that is stored on the drive.  While these drives are really fast, data writes are not just placed on the drive.  Data is moved around and the controller on the drive is programmed to use the drive evenly across the NAND blocks.   By moving the data around, the controller can use the free space (OP) to swap information as needed.     This in turn adds life to your SSD.  Always update your SSD firmware, use the manufacturer’s software for OP if your drive recommends it and don’t forget to trim your hard drive.  TRIM allows for the removal of junk or old data.  How? Easy – Open a command prompt (as Admin)

Type the following – fsutil behavior set DisableDeleteNotify 0

Over-provisioning in Samsung Magician’s software.

OP

 

 

SanDisk Connect 32GB Wireless Flash Drive For Smartphones And Tablets

TCAT Shelbyville IT Department:

Awesome Find Rick!

Originally posted on What's On My PC:

Everyday I become more enchanted with technology and what is out there (NOW) for our use. I came across a really neat product from SanDisk called the SanDisk Connect, that if I described it in one line, it would be something like this — “The SanDisk Connect Is A Flash Drive On Steroids”…

This drive is like no other flash drive. With the SanDisk Connect you can wirelessly store, share, stream movies, photos, music, and documents across your smartphones, tablets and computers. If you are looking to upgrade to another flash drive, I would definitely take a look at one of these [CLICK HERE]. The cost is more than a typical flash drive; however, the capability here outweighs the cost. Great customer reviews, as well.

SanDisk Connect

FEATURES:

  • Simultaneously connect & access data stored on up to 8 devices via Wi-Fi
  • No internet connection, cables or router required, works on…

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Achieving Excellence in the New School Year – Computer Information Technology at TCAT-Shelbyville

Our Information Technology Career Cluster winner, the Tennessee College of Applied Technology (TCAT) Computer Information Technology (CIT) program has been working hard over the summer to expand its outreach efforts, stretch its curriculum across Career Clusters and reach more students…more

Cipher /w:C securely erasing unused space

The Cipher program can be used to remove any erased data from unused disk space.  The command, Ciper /w:C is used to perform this action and can securely erase data that you once had on your computer.  While this command is relatively safe, you should always have a backup of your critical data.

If you want to do this to make sure files are deleted properly you have to remember a couple of things.  Only do this when the computer can set idle for several hours.   Another thing you have to remember is that if you interrupt this process, the Ciper command can fill up your hard drive with temporary files.   If you have to interrupt this process, you may see you have a lot of space that is suddenly missing.  Use Space Sniffer to find where the temp files were written so that you can erase them.

You can securely erase other drives by replacing the C in the command above with the drive letter of your choice.

cipher

 

 

 

Configuring WDS to extend your network

Want to extend your network and make it more reliable and robust?   

Here’s what you will need -

  • Two routers with the same firmware
    • Preferably Tomato or DD-WRT

Login to the first router.  

In this example, the static number 192.168.1.1 is the Main router.

  • Enable the WAN to match your ISP  
  • Enable DHCP
  • Enable Access Point + WDS  (Picture two below)
    • You must have the same wireless configuration on both routers
      • Enter the MAC address of router two under WDS Link with.

Router 1 no 1

Router 1 no 2

Login to the second router

  • Disable the WAN
  • Disable DHCP
  • Assign the router a static IP address (Below we have given the router .250)
  • Enter Router One’s IP Address for the Gateway
  • Enter a DNS of your choice
  • Make the wireless configuration the same as the first router.  Under WDS, change the drop down to automatic.

Router 2 no 1

Router 2 no 2

With the same settings, you can now extend your network several hundred feet under the right conditions.  Because the SSIDs are the same, once you join one of the routers with a smartphone or laptop, it will seamlessly change to the stronger signal.

With Tomato, you can chain together approximately 12 devices.

Links-

Tomato RAF

Shibby’s Tomato

DD-WRT

Note; The IP addresses and MAC addresses are in a lab environment.

How does it look on a network map?  The two routers are actually connected together.  The switch is the four ports on the back of the router closest to the internet.

Map

HP Pavilion 11 x360 Review

I usually don’t review hardware products but I felt a need to review HP’s Pavilion 11t-n000 x360.   

My father-in-law wanted a Microsoft Surface but still wanted a keyboard and the functionality of a laptop.   He also wanted to avoid the expense of a Microsoft Surface and wanted something with a small profile, light weight, lots of storage and plenty of ram for traveling.  He found the HP Pavilion 11 x360 that has the following features:

  • Quad core Pentium 2.17 Ghz
  • Windows 8.1 64bit
  • 4 GB DDR3 
  • 500 GB HD 
  • Beats Audio
  • less than 1″ profile
  • Screen 11.6″ (Touchscreen)
  • Gyros built in
  • 1 -USB 3.0
  • 2 -USB 2.0
  • Wireless 802.11
    • Miracast compatible 
  • Ethernet Port
  • 5 hour battery life (45 watt AC adapter)
  • SD Mediacard Reader
  • 12.12 x 8.46 x 0.86 in 
  • 3.08 lbs
  • HDMI
  • TruVision Webcam
  • 1 year warranty

I expected the laptop (netbook?) to be slow.  I was surprised at how responsive it was with 4GB of RAM.  It is by no means a powerful gaming computer but is a match for home, business or school users.   The pc is upgradeable to 8GB and a hybrid hard drive which would make a difference in performance.  Is this necessary for the typical user?  Probably not.

Once you setup a Microsoft account, Windows 8.1 has the Microsoft store (which now has over 400,000 apps ) and OneDrive to backup and sync pictures, files and more. 

With the HP Pavilion 11, you can fold the keyboard to have a tablet or you can flip the keyboard down and use the pc in ‘tent’ mode so it supports the tablet functionality.   Folding the keyboard under the touchscreen gives you a tablet.   The touchscreen is very responsive to the slightest touch.   

20140817_135729      20140817_135748

At $399,  I don’t know why you would buy a laptop or a tablet.   

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