Intel R2000WT Technical Product Specification - Page 57
Intel, Embedded Server RAID Technology 2 ESRT2
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Intel® Server Board S2600WT TPS rate. RAID 5 is well suited for applications that require high amounts of storage while maintaining fault tolerance. Note: RAID configurations cannot span across the two embedded AHCI SATA controllers. By using Intel® RSTe, there is no loss of PCI resources (request/grant pair) or add-in card slot. Intel® RSTe functionality requires the following: The SW-RAID option must be enable in BIOS Setup Intel® RSTe option must be selected in BIOS Setup Intel® RSTe drivers must be loaded for the installed operating system At least two SATA drives needed to support RAID levels 0 or 1 At least three SATA drives needed to support RAID levels 5 or 10 With Intel® RSTe SW-RAID enabled, the following features are made available: A boot-time, pre-operating system environment, text mode user interface that allows the user to manage the RAID configuration on the system. Its feature set is kept simple to keep size to a minimum, but allows the user to create and delete RAID volumes and select recovery options when problems occur. The user interface can be accessed by pressing the keys during system POST. Provides boot support when using a RAID volume as a boot disk. It does this by providing Int13 services when a RAID volume needs to be accessed by MS-DOS applications (such as NTLDR) and by exporting the RAID volumes to the System BIOS for selection in the boot order At each boot up, provides the user with a status of the RAID volumes 5.6.2 Intel® Embedded Server RAID Technology 2 (ESRT2) Features of ESRT2 include the following: Based on LSI* MegaRAID Software Stack Software RAID with system providing memory and CPU utilization RAID Level 0 - Non-redundant striping of drive volumes with performance scaling up to 6 drives, enabling higher throughput for data intensive applications such as video editing. Data security is offered through RAID Level 1, which performs mirroring. RAID Level 10 provides high levels of storage performance with data protection, combining the fault- tolerance of RAID Level 1 with the performance of RAID Level 0. By striping RAID Level 1 segments, high I/O rates can be achieved on systems that require both performance and fault-tolerance. RAID Level 10 requires 4 hard drives, and provides the capacity of two drives Optional support for RAID Level 5 o Enabled with the addition of an optionally installed ESRT2 SATA RAID 5 Upgrade Key (iPN RKSATA4R5) o RAID Level 5 provides highly efficient storage while maintaining fault-tolerance on 3 or more drives. By striping parity, and rotating it across all disks, fault tolerance of any single drive is achieved while only consuming 1 drive worth of capacity. That is, a 3 drive RAID 5 has the capacity of 2 drives, or a 4 drive RAID 5 has the capacity of 3 drives. RAID 5 has high read transaction rates, with a medium write rate. RAID 5 is well suited for applications that require high amounts of storage while maintaining fault tolerance 43 Revision 1.0