Adaptec 1220SA Manuale Utente

Chapter 2: About Your HostRAID Controller

l 15

HostRAID Controller Features

●

Port multiplier support— You can connect one SATA drive enclosure with a port 
multiplier to 1225SA HostRAID controller.

Note: 

To find out the version of the port multiplier, refer to the drive enclosure documentation.

Adaptec supports SiI3726 with one 3 Gbps SATA II host interface and five SATA device 
ports. We support only 3Gbps NCQ enabled drives.

Note: 

NetWare does not support drive enclosures with port multipliers but supports eSATA drives.

●

Greater than 2 TB support—You can create and manage HostRAID arrays which are bigger 
than 2TB size. Hence,users can use the current and future high capacity hard disk drives 
above 750GB.

●

Flash ROM for updates to controller firmware.

●

Event logging and broadcasting, including messaging for alphanumeric pagers.

●

Support for Adaptec Metadata Format (AMF) allowing the migration of simple volumes 
and arrays to Adaptec RAID controllers.

●

Multiple options for creating and managing RAID arrays—A full software application 
(Adaptec Storage Manager), a BIOS-based utility, and a command line utility. See 

 for more information.

●

Support for disk drive hot swapping.

●

Support for disk drive enclosures with SAF-TE enclosure management hardware.

Array Level Features

●

Support for RAID 0, 1, 10, and simple volumes with these HostRAID limitations:

●

RAID 0: support for max. six drives with SAS and max. four drives with SATA

●

RAID 10: support for max. four drives

●

RAID 1 is build with two drives always

The maximum number of arrays per controller is two.

The maximum number of global hot spares per controller is one.

●

Hot swap rebuild of fault tolerant arrays through the operating system.

●

Support for automatic failover, so arrays are automatically rebuilt when a failed disk drive 
is replaced (applies to redundant arrays in SES2- or SAF-TE-enabled disk drive enclosures 
only).

●

Global hot spare protecting every fault tolerant array that the drive has enough available 
capacity to protect.

●

Support for migration:

●

Simple Volume to RAID 0 

●

Simple Volume to RAID 1

●

(SATA-only) Native command queuing (NCQ), which lets disk drives arrange commands 
into the most efficient order for optimum performance.