Adaptec 2170200 User Guide - Page 15
HostRAID Controller Features, Array Level Features
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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.
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