Adaptec 44300, 58300, 48300, 1220SA, 1420SA manual HostRAID Controller Features, Array Level Features

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 Managing Your Storage Space on page 50 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.