Adaptec 1430SA User Guide - Page 20

Choosing a RAID Level, Selecting Disk Drives, Disk Drives for Your Controller, Selecting Cables - serial ata ii raid

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Chapter 4: Getting Started ● 20 Choosing a RAID Level This section provides a brief overview of the RAID levels supported by your HostRAID controller, including the minimum and maximum number of disk drives required by each. RAID 0 (Non-redundant Array)-Stripes data across multiple disk drives. Improved performance but no redundancy (see page 49). RAID 1 Array-Created from two disk drives where one disk drive is a mirror of the other (the same data is stored on each disk drive). Redundancy, but reduced capacity (see page 50). RAID 10 Array-Built from two or more equal-sized RAID 1 arrays, stripes and mirrors data across multiple disk drives. Redundancy and improved performance (see page 50). Not supported on the 1220SA controller. Use the table on page 49 to see how many disk drives you must connect to your HostRAID controller to support the RAID level you want. Selecting Disk Drives When selecting disk drives for your RAID array, ensure that all the disk drives have the same performance level. You can use different-sized disk drives in the array, but the array will be limited to the capacity of the smallest and slowest disk drive. For more information, refer to the Adaptec Storage Manager User's Guide or Adaptec Storage Manager online Help. Disk Drives for Your Controller Your SATA controller supports both SATA (Serial ATA) I and II disk drives. For cable information, see next section. Selecting Cables This section describes the cable options and requirements for your HostRAID controller. SATA Cables You need one straight connector to straight connector SATA cable for each disk drive you are connecting to your Adaptec SATA RAID controller. SATA cables are included in the kit. All SATA straight connector to straight connector cables have the same connectors, as shown in the following figure, and the connectors are keyed so that you can't insert them incorrectly. Adaptec recommends using only Adaptec SATA cables. For more information or to purchase cables, visit the Adaptec Web site at www.adaptec.com.

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Chapter 4: Getting Started
●
20
Choosing a RAID Level
This section provides a brief overview of the RAID levels supported by your HostRAID
controller, including the minimum and maximum number of disk drives required by each.
RAID 0 (Non-redundant Array)
—Stripes data across multiple disk drives. Improved
performance but no redundancy (see
page 49
).
RAID 1 Array
—Created from two disk drives where one disk drive is a mirror of the other (the
same data is stored on each disk drive). Redundancy, but reduced capacity (see
page 50
).
RAID 10 Array
—Built from two or more equal-sized RAID 1 arrays, stripes and mirrors data
across multiple disk drives. Redundancy and improved performance (see
page 50
). Not
supported on the 1220SA controller.
Use the table on
page 49
to see how many disk drives you must connect to your HostRAID
controller to support the RAID level you want.
Selecting Disk Drives
When selecting disk drives for your RAID array, ensure that all the disk drives have the same
performance level. You can use different-sized disk drives in the array, but the array will be
limited to the capacity of the smallest and slowest disk drive.
For more information, refer to the
Adaptec Storage Manager User’s Guide
or Adaptec Storage
Manager online Help.
Disk Drives for Your Controller
Your SATA controller supports both SATA (Serial ATA) I and II disk drives. For cable
information, see next section.
Selecting Cables
This section describes the cable options and requirements for your HostRAID controller.
SATA Cables
You need one straight connector to straight connector SATA cable for each disk drive you are
connecting to your Adaptec SATA RAID controller. SATA cables are included in the kit.
All SATA straight connector to straight connector cables have the same connectors, as shown in
the following figure, and the connectors are keyed so that you can’t insert them incorrectly.
Adaptec recommends using only Adaptec SATA cables. For more information or to purchase
cables, visit the Adaptec Web site at www.adaptec.com.