All Posts by Date or last 15, 30, 90 or 180 days.
also by Lloyd: diglloyd.com photography and WindInMyFace.com
Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd B&H Deal Finder...
Buy other stuff at Amazon.com...
Upgrade the memory of your 2019 iMac up to 128GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$147 $80
SAVE $67

$260 $130
SAVE $130

$48 $28
SAVE $20

$580 $320
SAVE $260

$1699 $1199
SAVE $500

$799 $299
SAVE $500

$15199 $13699
SAVE $1500

$7995 $7495
SAVE $500

$1399 $1049
SAVE $350

$1299 $1099
SAVE $200

$700 $500
SAVE $200

$764 $399
SAVE $365

$290 $250
SAVE $40

$169 $99
SAVE $70

$370 $300
SAVE $70

$200 $170
SAVE $30

$250 $235
SAVE $15

$3899 $3699
SAVE $200

$2799 $2499
SAVE $300

$1199 $999
SAVE $200

$2999 $2399
SAVE $600

$18599 $17099
SAVE $1500

$600 $450
SAVE $150

$1149 $799
SAVE $350

$420 $170
SAVE $250

$1499 $649
SAVE $850

$1499 $649
SAVE $850

$420 $170
SAVE $250

$369 $239
SAVE $130

$1699 $1399
SAVE $300

$1498 $998
SAVE $500

$999 $949
SAVE $50

$1099 $999
SAVE $100

OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!

Hitachi Coolspin 4TB Hard Drive

A 4TB hard drive offers cavernous space for those looking to store and backup large data sets, such as 36-megapixel RAW files, or perhaps more likely, video footage. I suggest cloning as a backup strategy for such huge collections.

Testing is in progress on the 4TB Hitachi Deskstar 5K4000 'Coolspin' hard drive, namely DiskTester with the fill-volume command, which provides a complete picture of drive performance across the entire drive.

The DiskTester fill-volume command forces the drive to write to and read from all the accessible space on the drive— a very good idea with a new drive, just in case there are excessive bad block areas, which will show up as oddball performance patterns, which can be seen by graphing the performance data in the supplied Excel spreadsheet (example further below).

The fill-volume tests takes a long time, about 10 hours for the write phase, and another 10 hours for the read phase— and that’s running the drive as fast as it can possibly go! In short, 4TB is an incredible amount of space, which means that anyone using a 4TB drive had better also have a solid backup strategy, since so much is at risk.

The graph provides at-a-glance information on how fast a drive is for sequential transfers; users looking to achieve some guaranteed transfer rate can partition the drive so that there is some known minimum transfer speed. The additional space beyond the first fastest partition usually becomes a separate volume or volume(s), or it can just go unused, depending on the goal. For example, one might partition a 4TB drive into a 2TB volume and another 2TB volume. The first partition will be much faster (on average).

Alternately, the graph confirms consistent performance on the drive, at a glance. Be sure to disable Spotlight and exclude from Time Machine on any volume being tested, or the results will be erratic as those programs thrash the disk heads while the test progresses.

Graphing the DiskTester fill-volume results to look for erratic behavior
(example)
OWC Envoy Pro EX SSD
Blazingly fast Thunderbolt 3 SSD!

Up to 4TB capacity, USB-C compatible.

USB-C model also available


Great for travel or for desktop!
Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).



Deals Updated Daily at B&H Photo
View all handpicked deals...

Peak Design Everyday Backpack (20L, Heritage Tan)
$260 $130
SAVE $130

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__