Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Upgrade MacBook Pro Retina SSD
Internal SSD Wishlist…

SAVE $200 Sigma sd Quattro H Mirrorless

SAVE $500 Sony a7R II Mirrorless
SAVE $300 Sony 28-70mm f/3.5-5.6 Alpha a7…
SAVE $200 Sony 28-70mm f/3.5-5.6 Alpha a7…
SAVE $200 Sony a7 Mirrorless
SKU SOA7R2A
SAVE $100 Nikon D3300 DSLR with 18-55mm
SAVE $200 Olympus OM-D E-M1 Mark II Mirro…
SAVE $200 Panasonic 42.5mm f/1.2 Leica DG…
SAVE $300 Olympus OM-D E-M5 Mark II Mirro…
SAVE $900 Apple 15.4" MacBook Pro with To…
SKU SOA7R2A
SAVE $800 Apple 15.4" MacBook Pro with To…
SAVE $800 Apple 15.4" MacBook Pro with To…
SAVE $800 Apple 15.4" MacBook Pro with To…
SAVE $150 Fujifilm X-A10 Mirrorless with…
SAVE $750 Fujifilm X-T1 Mirrorless
SAVE $1151 Zeiss 15mm f/2.8 Distagon T* ZE
SAVE $500 Canon EOS 6D DSLR Body with Sto…
SAVE $700 Canon EOS 5D Mark III DSLR
SKU DRSP1000B
SKU SOA6500M165A
SAVE $50 Sony DSC-RX100 V with Free Acce…
SAVE $350 Sony a6300 Mirrorless with 16-5…
SAVE $100 Sony a5000 Mirrorless with 16-5…
SAVE $100 Sony a6000 Mirrorless Body (Gra…
SAVE $150 Sony a6000 Mirrorless with 16-5…
SAVE $100 Sony 35mm f/2.8 Sonnar T* FE ZA
SAVE $750 Fujifilm X-T1 Mirrorless
SAVE $200 Sigma sd Quattro Mirrorless
SAVE $200 Sigma 30mm f/1.4 sd Quattro Mir…
SAVE $250 Sigma dp0 Quattro with LVF-01 L…
DZ SAVE $90 Lowepro ProTactic BP 250 AW…
DZ SAVE $95 CyberPower CP1500PFCLCD PFC…
DZ SAVE $80 Dracast LED160 3200-5600K Va…
DZ SAVE $220 Sony UWP-D11 Integrated Digi…
DZ SAVE $220 Acer 17.3" Aspire AZ3 Multi-…
DZ SAVE $350 Canon EOS Rebel T5i DSLR wit…
View all 38 deals…

Toshiba 4TB Enterprise Hard Drive (MG03ACA400)

Last updated 2014-02-11 - Send Feedback
Related: Storage, storage

Thanks to OWC for making the Toshiba Enterprise Class MG03ACA400 hard drive available for testing.

The Toshiba MG03ACA400 hard drive is an enterprise class 4TB hard drive with a five year warranty.

4.0TB Toshiba MG03ACA400 3.5" 7200RPM SATA 6Gb/s Hard Drive w/ 64MB Cache. Enterprise Class with 24 x 7 operation, Error Correction (ECC), Rotational Vibration (RV) technology & 1.2 million hours MTBF. 5 Year Toshiba Warranty.

Description:

This new reliable nearline model features a top storage capacity of 4.0TB in a 3.5-inch form factor and leading-edge 6Gb/sec SATA interface. Intended for 24 x 7 operation, the MG03ACAxxx also includes features that are critical to business operations such as enhanced Error Correction Code (ECC), Anti Rotational Vibration (RV) technology for multi-drive systems, and enhanced power condition state technology.

The MG03ACAxxx provides a flexible and cost effective storage solution for enterprise applications including entry-level servers, storage arrays, RAID systems as well as private cloud storage.

Bigger is faster

A 4TB drive can be a good choice if the need is to store 2TB to 3TB of data: see Why You Need More Space Than You You Need and Larger Hard Drives Are Faster Than Smaller Ones, and see the performance tests below.

Testing protocol

Tested in the Mac Pro 3.33 GHz 6-core, internal SATA bus, using the DiskTester command line version as follows:

disktester fill-volume --xfer 16M volume-name

The DiskTester fill-volume command writes 1000 files to fill the volume to 99% capacity, then reads those 1000 files back while checking for data errors. The resulting data can be graphed to characterize the performance across the drive, as seen below.

Single drive sustained transfer MB/sec

Sustained transfer speed is the metric most important for most users, and especially for opening large files in Photoshop and similar.

Write performance declines very consistently across the drive as it does with all hard drives; see Larger Hard Drives Are Faster Than Smaller Ones.

Reasons for the read performance drops at the beginning and end are unclear. Otherwise the drive provides consistent performance in a tight band when used as a single drive.

Four samples were tested and are graphed along with an average.
Click for a larger graph.

Sequential read/write performance of 4TB Toshiba MG03ACA400 hard drive (four samples)
MB/sec for 1000 files across the capacity (DiskTester fill-volume)

RAID-0 striping

Single-drive performance is in a tight band with a single drive, but with RAID-0 striping the drives were observed to produce a multi-part noise that corresponds to a write performance drop seen in the downward spikes (red). Reasons for this are unclear. Tests with both Apple’s Disk utility and SoftRAID 5 beta showed the same pattern, though the spikes were slightly deeper with SoftRAID 5. Still, the performance is at high levels.

Sequential read/write performance of 4TB Toshiba MG03ACA400 with RAID-0 striping
MB/sec (DiskTester fill-volume)

RAID-5 striping

Performance is in line with the results for RAID-0 striping, e.g., four drives in RAID-5 is similar to three drives in RAID-0.

Sequential read/write performance of 4TB Toshiba MG03ACA400 with RAID-5 (SoftRAID 5 beta)
MB/sec (DiskTester fill-volume)

RAID-1 mirror

A modest benefit is achieved on read speed with a RAID-1 mirror (the use all disks for mirror reads option in SoftRAID).

Sequential read/write performance of 4TB Toshiba MG03ACA400 with RAID-1 mirror (SoftRAID 5 beta)
MB/sec (DiskTester fill-volume)

Compared to 3TB DT01ACA300

Please see this page.

RAID- stripe X 2: 4TB Toshiba MG03ACA400 vs 3TB Toshiba DT01ACA300 (5.7TB volume)
MB/sec (DiskTester fill-volume)

Blazing-fast PCIe storage for Mac Pro Tower
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 11 hours unless noted. Certain deals may last longer.
$2099 SAVE $700 = 25.0% Canon EOS 5D Mark III DSLR in Cameras: DSLR
$798 SAVE $200 = 20.0% Sony a7 Mirrorless in Cameras: Mirrorless
$2398 SAVE $500 = 17.0% Sony a7R II Mirrorless in Cameras: Mirrorless
$1799 SAVE $1151 = 39.0% Zeiss 15mm f/2.8 Distagon T* ZE in Lenses: DSLR

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__