Adaptec 3085 PCIe SAS RAID Controller
Choose an Adaptec Unified Serial™ controller to leverage cost-effective, high-capacity Serial ATA (SATA) disk drives or high-performance Serial Attached SCSI (SAS) drives, or both, in a single storage system. With Adaptec Unified Serial controllers, you can scale up to 60TB (using 500GB drives) and increase performance for SATA and SAS storage.
This card offers the industry's first redundant path failover to minimize downtime with externally attached drives. With an x8 lane, 800 MHz processing power and 256MB of memory, your large capacity solutions will maximize performance and scalability.
The Adaptec RAID 3085 is an 8-port controller that supports externally attached SATA and SAS drives and supports the next-generation PCIe connectivity. It features Adaptec RAID Code (ARC) with RAID levels 0, 1, 1E, 5, 5EE, 6, 10, 50, 60, JBOD, as well as Copyback Hot Spare and optional Snapshot Backup. With an MD2 low-profile form factor, this card will fit into any server, including high-density rack mount and blade servers.
The card has 256MB of DDR2 memory and a battery unit is optional.Adaptec Storage Manager™ provides one-view, centralized management for all Adaptec RAID controllers.
Highlights
- 8 ports support up to up to 60TB of externally attached storage (using 500GB drives)
- 8-lane PCIe host interface
- 3 Gb/s per port
- RAID levels 0, 1, 1E, 5, 5EE, 6, 10, 50, 60, JBOD
- Copyback Hot Spare and optional Snapshot Backup
- LED header for drive activity and failure indication
- SES2 and SGPIO enclosure management
- 256MB DDR2 fixed data cache
- MD2 low-profile form factor
- RoHS compliant
- Optional battery backup module
- Includes low profile and standard height L brackets
- 3 year warranty

Comparison Chart
| Model Name | 3405 | 3085 |
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| Form Factor | MD2 - Low Profile |
MD2 - Low Profile |
MD2 - Low Profile |
Half Length / Full Height | Half Length / Full Height |
| Ports | 4 | 8 | 8 | 12 | 16 |
| Connectors | 1 internal SFF-8087 | 2 internal SFF-8087 | 2 external SFF-8088 | 3 internal SFF-8087 | 4 internal SFF-8087 |
| Bus Interface | 4-lane PCIe | 4-Lane PCIe | 8-Lane PCIe | 8-Lane PCIe | 8-Lane PCIe |
| Processor | Intel 80333 500MHz | Intel 80333 500MHz | Intel 80333 800MHz | Intel 80333 800MHz | Intel 80333 800MHz |
| Cache | 128MB | 128MB or 256MB | 256MB | 256MB | 256MB |
| Part Number | 2251800-R | 2252100-R | 2251600-R | 2252600-R | 2252900-R |
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