Litigation Support Tip of the Night

June 3, 2019

If you are using a Dell laptop, be sure to turn off the touchpad zoom option.   In Windows 10 go to Settings . . .Devices . . .Touchpad . . . Additional Settings . . . Dell Touchpad settings.

Turn off the zoom gesture.  It is sure to mess you up. 

and click the option for 

May 3, 2019

Nirsoft has another get free utility called BlueScreenView, which can be downloaded here.    BlueScreenView will generate a table listing information about the times in the past that your PC has crashed.  It scans minidump files to get this information.   

A minidump contains memory for a single process.  

November 1, 2018

Recently I got some bad advice from an Apple Genius at the Apple Store near the Plaza Hotel in Manhattan.   He advised me that I should let my battery run down to 5% or lower as often as possible in order to maximize the battery life.    This is not the way to get the most out of your iPhone's lithium battery.  


Apple makes clear on its official site, that, "There’s no need to let it discharge 100% before recharging. Apple lithium-ion batteries work in charge cycles. You complete one charge cycle when you’ve used (discharged) an amount that equals 100% of your battery’s capacity — but not necessarily all from one charge."   Xfinity, Comcast's, internet, cable and telephone service, explains on its mobile phone information site, that phones using nickel ion batteries had a memory charge problem that required a full charge to be depleted so each section of the battery could be continuously used.   Phones with lithium batteries should not be fully discharged each day.  "[I]f you let your battery drain completely every day, it will last 500 days. If you charge it before it drains and top it off throughout the day, you’ll stretch out the time those 500 charges will last."

A Popular Science article recommends letting the battery life go down to only about 50% per cent before recharging and avoiding recharging fully.   "Shallow discharges and recharges are better than full ones, because they put less stress on the battery, so it lasts longer."

Battery University provides detailed research into this issue.   "If at all possible, avoid full discharges and charge the battery more often between uses."    The lower the discharge percentage, the higher the number of discharge cycles.


 

March 31, 2017

RAID stands for Redundant Array of Independent Disks - this fun acronym refers to digital storage units which use multiple disk drives to improve performance or for data redundancy.   Keep in mind that this means that RAID units are designed to operate faster and ensure that data is available if a drive fails.   It does not mean that a single RAID  unit operates as a back-up archive.  A RAID unit will not account for problems when files are corrupted or deleted.   So if a file on one of the RAID disks is deleted, it will be automatically removed from the mirrored disks in the same unit.

There are several different kinds of RAID configurations, and they are each assigned a number.

RAID 0 - employs striping to distribute the contents of a file evenly across the multiple disks in a RAID unit.    This lets concurrent read or write operations run more quickly, but if one disk fails, the entire volume is lost.

RAID 1 - does not use striping  - so each file is entirely on one disk, but there are redundant copies of the file on the other disks, so if one disk fails, the data can be recalled from one of the others.  The problem is that data can only be written at the speed of the slowest drive since all of the drives must be updated.

RAID 2 - in this configuration, the spindles on each drive are synchronized, and each sequential bit of a file is stored on a different drive.  This is a largely obsolete configuration, and is not used on any newly manufactured RAID units. 

RAID 3 - in this configuration the spindles are also synchronized, but the data for a file is spread across drives at the byte level.   RAID 3 is very rarely used. 

RAID 4 - this configuration uses block striping - a block usually being 512 KB.   [8 bits in a byte].  

RAID 5 - The data is distributed so that if one drive fails, the data can be assembled from the others.   A minimum of three drives are required.    It also uses block level striping. 

RAID 6 -  like RAID 5 this also uses block striping, but allows for recovery even if two drives fail, and requires a minimum of four drives.   

December 26, 2016

If a USB port on your PC is not functioning it may be because the operating system has disabled it in order save power.    You can re-enable it by following these steps. 

1. Press the Windows key, plus R, and type in regedit.   Press ENTER and your Registry Editor will open.

2.  In the folder tree to the left, browse to HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ services \ USB   - if the USB folder doesn't already exist, you can create it.

3. On the right, right click on the file named 'DisableSelectiveSuspend' and choose Modify.

4. Set the Value Data to 1.

Now after restarting your PC, the USB ports may be reactivated if they were disabled to save power.

December 25, 2016

HD Tune is a program you can use to monitor your drive performance.  It can be downloaded here.   There is a free 15 day trial membership, after which you must purchase a license for $35.    

This little utility will show you the temperature of internal or external hard drive, and also provide the following information about how the drive is running:

1. File Benchmark - shows how fast data transfers (both reading and writing), how many MBs per second, based on different file lengths:

2. Random Access - HD Tune will also measure the random access speed of the drive - as you can it takes longer to access data from discontinuous blocks. 

3. Automatic Acoustic Management (AAM) -   many hard drives contain mechanisms to reduce the vibration caused by positioning a head over the platter of the drive.   Most people will be familiar with the clicking noise that a computer makes when the head is positioned at the targeted sector of the platter to access data.    AAM can make the drive operate more quietly, but will increase random access time.   Newer Western Digital and Seagate drives no longer include this feature.

4.  Error Scan - HD Tune can also scan a drive for errors.   It creates a map indicating where damaged areas are located.   An associated speed map will indicate where read performance is both high and low.

5. Folder Usage will very quickly provide a breakdown of the size of data contained in various locations in the folder structure of the drive. 

6. HD Tune also contains a secure erase function. 

September 21, 2016

I have a six year old Toshiba Satellite with a big 18" monitor - it's a desktop replacement really.  I bought it loaded with lots of VRAM in order to help with the successful presentation of video clips using Trial Director.   See the Tip of the Night for April 12, 2015.   Lately my laptop has been shutting down without warning - ostensibly it's overheating and needs to power down to protect the motherboard.  The problem may stem from the cooling fans (located at the bottom of the laptop) being clogged with dust.   While I did try blowing air through van ducts and out the vents on the side of the laptop, I think I have had better luck keeping it running simply by placing at a lengthwise on top of a coffee table book.   This keeps the fans elevated and clear. 

SpeedFan is available for download here .    While it's not able to access the fan speed settings from my particular laptop it can apparently do so on other hardware.    It's a good little utility to see how hot your machine is running.   See the temperatures listed below for the Graphics Processing Unit, Hard Drives, and Core Processors.

March 4, 2016

I love that there are helium sealed drives - this is just an inherently cool thing.   Helium sealed drives use less power, are quieter, generate less heat, and are more resistant to dust and debris which can lead to drive failure.   Helium is less dense than air, and this allows the drive to spin with less turbulence and take up less power, and also generate less sound through vibrations.   The drive operates at a cooler temperature because less friction is caused in the helium environment.     Because a Helium drive is smoother and more stable more platters (the circular discs that rotate on a spindle) can be fitted inside the same space.     The encasing needed to seal in the helium also keeps out particles than can effect the performance of the drive. 

 

Western Digital currently offers several multi TB helium sealed drives. 

 

 

 

March 3, 2016

When you have to comply with a government regulation like the SEC Rule described in last night's tip, or have a another pressing reason to ensure that data is stored indefinitely without being altered, consider investing in a WORM device.   WORM stands for Write Once, Read Many.   Optical discs like a CD-Rs are WORM media, but WORM drives also exist.    A SanDisk memory vault device will prevent the deletion of any file which has already been saved to it.   GreenTec's  WORM drives ensure all data is read only  by the protection in the hardware itself.  No matter what operating system is used and what access controls are placed on data, it cannot be overwritten.   EMC also manufacturers Centera drives which serve the same function.

 

Data storage devices can fall into hands other than those that originally acquired them to archive records.   Drives are often in short supply and get repurposed.    If a court order only allows a firm to retain a single copy of deposition transcripts or other documents after the settlement of a case,  you want to guarantee the data doesn't get deleted inadvertently at some point.   WORM drives may increasingly become part of standard electronic post-discovery due diligence for long term storage. 

 

 

 

 

 

 

February 10, 2016

If you're like me and you invested in an expensive laptop with lots of VRAM for graphic presentations which works great, but isn't so portable, it may be time to consider investing in an easier to carry laptop.   Prices for new laptops are very low these.   I just purchased a Asus laptop with a 11.6 inch screen which can be bought here for less than $150.   It only weights 2 pounds and is listed as getting 12 hours of battery life.  I am using it right now and I have not encountered any problems.   The widespread use of tablets and smartphones means that manufacturers have no choice but to slash prices.   But having a keyboard and a Windows operating system lets you do so much more.   I'm sure having a top of the line Surface Pro would be nicer, but for the money you could afford to get a new one of these laptops every year.   Note that the Asus laptop referenced above is a reconditioned device.

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Sean O'Shea has more than 15 years of experience in the litigation support field with major law firms in New York and San Francisco.   He is an ACEDS Certified eDiscovery Specialist and a Relativity Certified Administrator.

The views expressed in this blog are those of the owner and do not reflect the views or opinions of the owner’s employer.

 

All content provided on this blog is for informational purposes only. The owner of this blog makes no representations as to the accuracy or completeness of any information on this site or found by following any link on this site. The owner will not be liable for any errors or omissions in this information nor for the availability of this information. The owner will not be liable for any losses, injuries, or damages from the display or use of this information.

 

This policy is subject to change at any time.