Ports & interfaces
| Serial ports quantity |
4 |
| Host interface |
PCIe |
Other features
| Ports quantity |
4 |
| Mac compatibility |
N |
| Form factor |
MD2 |
| Data transfer rate |
3000 Mbit/s |
Additionally
| Wireless technologies |
Wired |
SAS/SATA RAID, PCIe 1 x 4ports, 3Gb/s
Four-port 3Gb/s PCI Express SAS/SATA RAID Adapter
The four-port MegaRAID SAS 8704EM2 provides high-performance and cost effective data protection for internal SAS systems using up to 32 SAS or SATA hard drives. Leveraging the smallest standard PCI Express MD2 form factor, this adapter is a perfect fit for 1U and 2U servers and space-limited storage environments. Featuring the LSISAS1078 ROC, a x8 PCI Express host interface and 667MHz DDRII, the MegaRAID SAS 8704EM2 is a high-performance RAID adapter with advanced data protection capabilities for low-cost server and nearline applications.
Features
- Four internal SAS/SATA ports;
- One Mini-SAS SFF-8087 x4 connectors;
- 3Gb/s throughput per port;
- LSISAS1078 RAID on Chip (ROC);
- 500MHz power-PC;
- Hardware RAID 5 & 6 parity engines;
- Low-profile MD2 form factor (6.6” X 2.536”);
- x8 PCI Express host interface;
- 128MB DDRII Cache (667MHz);
- Optional battery backup unit (direct attach);
- Connect up to 32 SAS and/or SATA devices;
- RAID levels 0, 1, 5 and 6;
- RAID spans 10, 50 and 60;
- Auto-resume on rebuild;
- Auto-resume on reconstruction;
- Online Capacity Expansion (OCE);
- Online RAID Level Migration (RLM);
- Comprehensive RAID management suite;
- Global and dedicated hot spare with revertible hot spare support;
- Automatic rebuild;
- Enclosure affinity;
- Emergency SATA hot spare for SAS arrays;
- Single controller multipathing (failover);
- I/O load balancing;
- Support for extended RAID 1 volumes of up to 32 devices;
Benefits
- Cost-effective RAID protection for SATA and SAS drives using RAID 0, 1, 5, 6, 10, 50 or 60;
- LSISAS1078 ROC, x8 PCI Express host interface and 667MHz DDRII cache enhance performance of storage for low-cost server and nearline applications;
- True MD2 form factor perfect fit for 1U and 2U servers and space-limited storage environments;
- Battery backup and advanced error detection and correction capabilities deliver outstanding RAID availability;
- Common suite of management utilities for all MegaRAID SAS/SATA adapters.
