Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Upgrade the memory of your 2018 Mac mini up to 64GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$4500 $3500
SAVE $1000

$1699 $1199
SAVE $500

$6799 $6799
SAVE $0

$249 $249
SAVE $0

$3198 $1798
SAVE $1400

$2799 $2099
SAVE $700

$199 $199
SAVE $0

$1398 $898
SAVE $500

$140 $100
SAVE $40

$699 $549
SAVE $150

$4499 $2649
SAVE $1850

$1699 $1199
SAVE $500

$5999 $5999
SAVE $0

$181 $141
SAVE $40

$7699 $7699
SAVE $0

$4499 $2649
SAVE $1850

$400 $330
SAVE $70

$4499 $2649
SAVE $1850

$2350 $1950
SAVE $400

$1700 $1300
SAVE $400

$200 $160
SAVE $40

$1997 $897
SAVE $1100

$250 $110
SAVE $140

$3999 $2499
SAVE $1500

$200 $170
SAVE $30

$3999 $2499
SAVE $1500

$1498 $1398
SAVE $100

$2497 $1897
SAVE $600

$748 $598
SAVE $150

$899 $699
SAVE $200

CalDigit T3: 3-HDD RAID-5 vs RAID-0

Last updated 2014-01-11 - Send Feedback
Related: hard drive, RAID, RAID-0, RAID-4, RAID-5, storage, Thunderbolt

Performance with RAID-0 striping should run at the speed of the drives installed, or very close to it: three drives striped should run nearly 3X faster than one drive.

A RAID-5 (“striping with parity”) uses the capacity of drive for parity information (could be distributed among drives or dedicated to one drive). Hence, the best speed that can be expected of an 3-drive RAID-5 is 2X that of a single drive.

When a drive fails in a RAID-0, the volume is kaput. When a drive fails in a RAID-5, it degrades to a RAID-0. Hence one trades off some speed for fault tolerance.

Results

Tested with three fast Toshiba 7200 rpm DT01ACA200 series drives. Single-drive speed of the drives used is ~180MB/sec on the fast portion of the drives (left side of graph).

The RAID-5 volume was created using a beta version of SoftRAID 5.

The RAID-5 speed is about 2X the speed of a single drive and the RAID-0 speed is about 3X the speed of a single drive. Which is what one would expect.

The falloff over the capacity (left to right in graph) is an unavoidable function of hard drive speed across the capacity (it would not occur with SSDs).

CalDigit T3 Thunderbolt: RAID-5 vs RAID-0

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

Apple 13.3" MacBook Pro (Mid 2017, Space Gray)
$1699 $1199
SAVE $500

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__