Adaptec 6805Q 2270700-R User Manual

Chapter 3: About Your RAID Controller

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About the Adaptec RAID 51645

The Adaptec RAID 51645 is a SAS RAID controller with these features:

Form Factor

Full Height, Half Length

Bus compatibility

PCIe 1.1

PCIe bus width

x8

Data transfer rate

3 Gb/s per port

Phys (Unified Serial Ports)

20

Standard cache

512 MB DDR2

Connectors, Internal

4 mini-SAS x4 (SFF-8087)

Connectors, External

1 mini-SAS x4 (SFF-8088)

Maximum number of disk drives

20 direct-attached (or up to 256 with expanders)

Enclosure Support

I2C and SGPIO (Serial General Purpose Input/Output)

Onboard speaker

Yes

Battery Backup Module

Adaptec Battery Module 800/800T (sold separately—see 

CN1

I2C, CN0

I2C, CN1

Ext. Alarm

Aggregate Activity

Reserved

Activity CN2, CN3

I2C, CN3

I2C, CN2

Activity
CN0, CN1

CN6

CN0

CN2

CN3

Mode 0 Flash

Battery connector

1 external 
mini-SAS 
connector

4 internal 
mini-SAS 
connectors