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
Colfax International - Reseller / System Integrator

2805 Bowers Ave, Santa Clara, CA 95051

Phone 408-730-2275

Ma Labs - Distributor

2075 North Capital Avenue, San Jose, CA 95132

Phone 408-941-0808

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