LSI LSI00181 Leaflet

MegaRAID

®

 SAS 8704EM2 

Four-Port 3Gb/s PCI Express SAS/SATA RAID On Chip Adapter 

Product Brief

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The MegaRAID SAS 8704EM2, a second 

generation SAS/SATA RAID product from LSI, 

provides high-performance and cost-eff ective 

data protection for systems using SATA or SAS 

hard drives.  Architected with a x8 PCI Express 

host interface, 667MHz DDRII memory, and 

the LSI SAS1078 ROC controller, the MegaRAID 

SAS 8704EM2 is a powerful RAID solution for 

traditional application servers employing four 

direct-connect drives or up to 32 drives using 

SAS expanders.  With a true MD2 low-profi le 

form factor, this adapter is ideal for today’s data 

centers where space is at a premium.   

The MegaRAID SAS 8704EM2 supports all 

key RAID levels including RAID 6 and 60 for 

increased fault tolerance. RAID 6 tolerates two 

simultaneous drive failures, and thus the ability 

to manage unrecoverable media errors during 

re-builds. This is particularly useful when using 

a lot of high-capacity SATA disk drives. 

The MegaRAID Management Suite™ provides 

the essential software tools to effi

  ciently man-

age MegaRAID products, whether deployed 

in an enterprise or small business. LSI off ers a 

collection of applications and tools including 

a pre-boot setup utility and a full spectrum of 

online RAID management utilities. This new 

suite of applications allow administrators to 

adjust SAS topology views from the system 

host, controller and disk enclosure down to 

the logical and physical drive level.  Extending 

to enterprise deployments, these tools scale 

to easily confi gure, monitor and manage RAID 

volumes locally or over the LAN network.

The MegaRAID LSIiBBU06 is a battery-backup 

module that protects the integrity of the cached 

data on a MegaRAID controller in the event of a 

complete power or server failure.  This add-on 

module, which connects directly to the adapter, 

has the added functionality to automatically 

charge the battery pack and communicate 

with the host system the battery status, such 

as voltage, temperature, and capacity.  

Space-Saving RAID Adapter for Cost-Sensitive SAS/SATA Environments

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