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Adaptec 6805TQ maxCache RAID controller


Adaptec’s take on maxCache

Adaptec maxCache 2.0 Storage Controllers– Evolved Performance
First generation maxCache offered significant performance gains for read-intensive applications, delivering up to 11x performance improvement in 100% random read workloads.  Using SSDs to cache copies of frequently accessed – or ‘hot’ – data, maxCache exploits the performance capabilities of SSDs to access the read data from the SSD rather than spinning media.  Read caching is improved with maxCache 2.0, with additional optimizations to the learned-path algorithm delivering an increase in overall IOPs performance to 13x for read-intensive environments.

To deliver the advanced performance capabilities of SSD caching to a broader set of application workloads, maxCache 2.0 evolves to offer caching of write data as well.  By caching writes to the SSDs, maxCache 2.0 leverages the performance and latency capabilities of SSD technology for workloads with reads and writes

Specifications taken from Adaptec’s site:

Supported Operating Systems
Microsoft Windows
Red Hat Linux
SUSE Linux
Debian Linux
Ubuntu Linux
Sun Solaris
For a detailed list see ASK Answer ID 17137
Supports Adaptec maxCache SSD caching with any SSDs.
Unified Serial storage controller supports both SATA and SAS devices.
Ideal for I/O intensive storage applications requiring low latency; NAS, OLTP servers, web servers, databases, and digital surveillance.
Key DifferentiatorsAdaptec maxCache SSD caching support
Zero-Maintenance Cache Protection
Intelligent Power Management
Customer Needs
High I/O transaction and high bandwidth processing.
Form Factor
MD2 Low-Profile
Cache Memory512MB of DDR2 memory
RAID Levels
RAID levels 0, 1, 1E, 5, 5EE, 6, 10, 50 and 60
Key RAID Features
• Supports Adaptec maxCache SSD caching with any SSD
• Supports SSD cache pool capacity up to size of 1TB
•Supports up to 8 SSDs in cache pool
• Supports 8 direct-attached or up to 256 SATA or SAS disk drives using SAS expanders
• RAID levels 0, 1, 1E, 5, 5EE, 6, 10, 50 and 60
• Quick initialization
• Online Capacity Expansion
• Copyback Hot Spare
• Dynamic caching algorithm
• Native Command Queuing (NCQ)
• Background initialization
• Hot-plug drive support
• RAID Level Migration
• Hot spares – global, dedicated, and pooled
• Automatic/manual rebuild of hot spares
• SAF-TE enclosure management
• Configurable stripe size
• S.M.A.R.T. support
• Up to 512TB array sizes
• Multiple arrays per disk drive
• Bad stripe table
• Dynamic sector repair
• Staggered drive spin-up
• Bootable array support
• Optimized Disk Utilization
Bus System Interface Type
8-lane PCIe Gen2
Internal Connectors2 internal (SFF-8087) Mini SAS
Data Transfer Rate
6 Gb/s per port
Package Contents
• Adaptec maxCache 6805TQ Controller with AFM-600
• Additional low profile vented bracket
• Adaptec RAID Installation DVD (bootable, including Driver &  Management Software)
3 yearsManagement UtilitiesAdaptec Storage Manager™ (ASM)
• Adaptec maxCache 2.0 SSD caching Software
• Java-based GUI Management Utility
• Remote configuration, monitoring & notification
• ASM OS Support: Windows, Linux,  Solaris, FreeBSD
• Microsoft VDS Support
• Remote firmware updatesARCCONF
• Command Line Interface
• SMI-S support for VMwareAdaptec BIOS Utility (ACU)
• BIOS level configuration utility
• Flashable BIOS supportPhysical Size2.5″ H x 6.6″ L (64mm x 167mm)Operating Temperature0°C to 50°C* (with 200 LFM airflow)

Note: This Adaptec card contains a powerful RAID processor which requires adequate
airflow to operate reliably. Please install this card only into server or PC chassis with recommended airflow (200 LFM).

* Ambient temperature measured 1″ away from the RAID processor

Operating Voltage

0.17 A @ 3.3 VDC
1.25 A @ 12.0 VDC

Regulatory Certification

CE, FCC, UL,  C-tick, VCCI, KCC

Mean Time Before Failure (MTBF)

860,953 hours at 40 degree C.

Closer Look:

Adaptec 6805TQ card 1 Adaptec 6805TQ card 3
Adaptec 6805TQ connectors to drives Adaptec 6805TQ card 4
Adaptec 6805TQ card 6 Adaptec 6805TQ card 7

The noticeable points on the 6805TQ card are the second layer circuit board that is sandwiching a large portion of the circuitry of the card. Also the locations where the cables are connected to the card are located in the middle of the card. The 6805TQ doesn’t have a sticker warning that it requires sufficient air-flow for cooling like the 6805E.  The 6805TQ needs only standard computer case airflow, so you do not need to breakout the nitrogen cooling system.

Adaptec 6805TQ Cable 1 Adaptec 6805TQ Cable 2

The cables are the same as the 6805E card review. These two cable branch out to four HDD each, for a total of eight supported HDDs.


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