Adaptec 4805SAS User Guide - Page 39

Connecting Disk Drives to SAS RAID Controllers, Connecting Directly to the Controller - directive

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Chapter 5: Installing the Controller and Disk Drives ● 39 6 Optional-Connect your RAID controller's I2C connector (not available on all models) to an I2C connector on an internal backplane or enclosure, using an I2C cable. For more connection details, see About Your RAID Controller on page 15. 7 Prepare and install your internal disk drives, following the instructions for your type of controller: ● For SAS RAID controllers, see page 39. ● For SATA RAID controllers, see page 41. ● For SCSI RAID controllers, see page 41. If you are not installing internal disk drives, close your computer cabinet, reattach the power cord, then continue with Connecting External Devices on page 42. Connecting Disk Drives to SAS RAID Controllers You can connect SAS disk drives, SATA disk drives, or a combination of both to your SAS RAID controller. There are no jumpers or switches to set before installation. If you plan to build a bootable array using internal disk drives, ensure you install at least the minimum number disk drives required to support the RAID level you want. See page 31 for more information. Note: Although you can connect both SAS and SATA disk drives to your SAS controller, Adaptec recommends that you not combine SAS and SATA disk drives within the same array or logical drive. See page 69 for more information. You have two connection options: ● To connect directly to the controller, see the following section. ● To connect to a backplane, see page 40. Connecting Directly to the Controller In a direct-attach connection, SAS or SATA disk drives are connected directly to a SAS card with SAS cables.The number of direct-attached disk drives is limited to four per internal SAS connector. (For more information about direct-attach connections, see page 72.) 1 Install your internal SAS or SATA disk drives, following the instructions in your system's documentation.

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Chapter 5: Installing the Controller and Disk Drives
●
39
6
Optional
—Connect your RAID controller’s I2C connector (not available on all models) to
an I2C connector on an internal backplane or enclosure, using an I2C cable. For more
connection details, see
About Your RAID Controller
on page 15
.
7
Prepare and install your internal disk drives, following the instructions for your type of
controller:
●
For SAS RAID controllers, see
page 39
.
●
For SATA RAID controllers, see
page 41
.
●
For SCSI RAID controllers, see
page 41
.
If you are not installing internal disk drives, close your computer cabinet, reattach the
power cord, then continue with
Connecting External Devices
on page 42
.
Connecting Disk Drives to SAS RAID Controllers
You can connect SAS disk drives, SATA disk drives, or a combination of both to your SAS
RAID controller. There are no jumpers or switches to set before installation.
If you plan to build a bootable array using internal disk drives, ensure you install at least the
minimum number disk drives required to support the RAID level you want. See
page 31
for
more information.
Note:
Although you can connect both SAS and SATA disk drives to your SAS controller, Adaptec
recommends that you
not
combine SAS and SATA disk drives within the same array or logical
drive. See
page 69
for more information.
You have two connection options:
●
To connect directly to the controller, see the following section.
●
To connect to a backplane, see
page 40
.
Connecting Directly to the Controller
In a direct-attach connection, SAS or SATA disk drives are connected directly to a SAS card
with SAS cables.The number of direct-attached disk drives is limited to four per internal SAS
connector. (For more information about direct-attach connections, see
page 72
.)
1
Install your internal SAS or SATA disk drives, following the instructions in your system’s
documentation.