High-Density 4U Disk Expansion Unit

  • High Reliability, Serviceability and Availability
  • High Density and Flexibility
  • Cost-effectiveness by Shared Architecture

* Limited Availability * 
Please contact a local distributor or QCT local office for the product availability and support.

High Density and Flexibility

M4240H is the high density SASII/SATAIII 6Gb/s 4U-24 bay 3.5”/2.5” JBOD. M4240H delivers a high-performance, high-availability, high-serviceability & cost-effective disk expansion solution to meet the enterprise class demand in solving the challenges of today’s fast growing of storage capacity.

High Redundancy and Serviceability

M4240H supports SAS full duplex access capabilities with dual SAS Interface Module, with three host 6Gb/s SAS ports in each SAS Interface Module can provide 3 servers connect to M4240H simultaneously to share the pooled storage.

High Scalability and Capacity

With total 3 sets of M4240H daisy chained, the solution can scale up to 72 disk drives, equipped with 4TB drives, can support up to 288TB in a single storage farm which can meet most of the application capacity demand in Small-and-Medium Business (SMB) and Enterprise environment.

  • BSMI--Taiwan--EMISafety
  • CB-EU
  • CE-EU
  • FCC-ClassA-US
  • MSIP--class--A(Korea)
Form Factor
Form Factor
w/o Cable ARM
17.52 x 6.88 x 21.93
w/ Cable ARM
445 x 174.75 x 557.02
w/o HDD
64.53 lb. (29.33kg)
Controller Module
Controller Module
(2)Hot-swappable SAS Interface Modules (SIM)
External I/O Ports
External I/O Ports
(3)6Gb/s mini-SAS ports per SIM
HDD Number
Storage type
2.5" Hot Plug
3.5" Hot Plug
Management Port
Management Port
(1)RJ11 management port
Expansion Support
Expansion Support
Scalable up to (72)HDDs in cascading (3) M4240H
Power Supply
Power Supply
(2)760W redundant power supplies, input requirements 88 - 264V AC
Cooling Fans
Total 2+2 redundant in the system, (2)fans in each power supply module
LED Indicators
LED Indicators
Power LED
System ID/ Status LED
HDD Active and ID/ Status LED
Operating Environment
Operating Environment
Operating Temperature: 0°C to 40°C (32°F to 104°F)
Humidity: 50% to 93% relative humidity
Altitude: 40°C / 3200 Meter
Shock : [email protected], half-sine shock
Operational Vibration: 0.26Grms random vibration 5~350Hz
AMAX Engineering Corp. - Reseller / System Integrator

1565 Reliance Way, Fremont, CA 94539

Phone 1-510-651-8886

Toll-Free (800) 800-6328

Avnet, Inc. - Distributor

2580 Junction Avenue, San Jose, CA 95134

Toll-Free 1.800.409.1483

BlueChipTek - Reseller / System Integrator

3350 Scott Blvd. #64, Santa Clara, CA 95054

Phone 408-731-7700

Colfax International - Reseller / System Integrator

750 Palomar Ave, Sunnyvale, CA 94085

Phone 408-730-2275

Continental Resources - Reseller / System Integrator

175 Middlesex Turnpike Suite 1 | P.O. Box 9137 Bedford, MA 01730-9137

Phone 781-275-0850

Toll-Free 800-937-4688

Daystrom - Reseller / System Integrator

225 Cabrillo HWY S Suite 103D. Half Moon Bay, CA 94019

Phone 650-712-4429

Toll-Free 800-656-3224

Genstor - Reseller / System Integrator

1501 Space Park Drive, Santa Clara, CA 95054

Phone 408-980-0121

Toll-Free 877-25 SERVER

HPM Networks, Inc. - Reseller / System Integrator

6700 Koll Center Parkway, Suite 250 Pleasanton, CA 94566

Phone (925) 965-0700

International Computer Concepts - Reseller / System Integrator

300 Wainwright Dr, Northbrook, IL 60062

Phone 1-877-422-8729

Ma Labs - Distributor

2075 North Capital Avenue, San Jose, CA 95132

Phone 408-941-0808

Myriad Supply Company LLC - Reseller / System Integrator

22 West 19th Street, 4th Floor, New York, NY 10011

Phone 866-725-1025

Toll-Free 866-725-1025

RackLive - Reseller / System Integrator

645 National Ave Mountain View, CA 94043

Phone (650) 230-8060

Redapt Inc. - Reseller / System Integrator

12226 134th CT NE, Building D, Redmond, WA 98052

Phone 425.882.0400

Toll-Free 888-800-5633

SHI International Corp. - Reseller / System Integrator

290 Davidson Avenue, Somerset, NJ, 08873 USA

Phone 732-868-8724

Toll-Free 888-764-8888

SYNNEX - Distributor

44201 Nobel Drive Fremont, CA 94538

Phone (800) 756-9888

Toll-Free 888-756-4888