Installing Internal Drives - Netfinity 5600 - Type 8664

Installing Internal Drives

Different types of drives allow the system to read multiple types of media and store more data.
Several types of drives are available, such as:

•  Diskette
•  Hard disk
•  CD-ROM
•  Tape

Rack model 

The server contains hardware that lets you replace a failed hard disk drive without turning off the server.
Therefore, you have the advantage of continuing to operate the system while a hard disk drive is removed or installed.
These drives are known as hot-swappable drives.
They are also referred to as hot-swap drives.

Each hot-swap drive that you plan to install must have a hot-swap-drive tray attached.
The drive must have a single connector attachment (SCA) connector.
Hot-swap-drive trays come with the hot-swap drives.

•  The server comes with a preinstalled 3.5-inch, 1.44 MB diskette drive and a preinstalled IDE CD-ROM drive.
•  Bays A and B come without a device installed.
   These bays are for 5.25-inch, half-high, removable-media drives, such as tape backup drives.
   Bays A and B can be combined into a single full-high bay.
•  The Netfinity 5600 server supports only one diskette drive.

  Note: The server's EMI integrity and cooling are both protected by having bays A and B covered or occupied.
   When you install a drive, save the filler panel from the bay, in case you later remove  the drive and do not replace it with another.

•  If you are installing a device with a 50-pin connector in one of the non-hot-swap bays (bays A--B), you  need a 68-pin to 50-pin converter.
   To order the converter, contact the IBM reseller or IBM marketing representative.
•  The server supports six slim (1-inch) or three half-high (1.6-inch), 3.5-inch hot-swap hard disk  drives in the hot-swap bays.
•  The hot-swap bays connect to a SCSI backplane.
   This backplane is the printed circuit board behind the bay.
   The backplane supports up to six hard disk drives.
•  The diskette drive uses 1 MB and 2 MB diskettes.
   For optimum use, format 1 MB diskettes to 720 KB and format 2 MB diskettes to 1.44 MB.

SCSI Drives: Some drives have a special design called small computer system interface, or SCSI. This design allows you to attach multiple drives to a single SCSI channel.

Notes

1.  Any information about SCSI drives also applies to other SCSI devices, such as tape drives.
2.  If you plan to install both internal and external SCSI devices, you must follow the instructions in 'Connecting external options', in addition to the instructions in this section.

A 16-bit (wide) SCSI cable connects the SCSI HDD (hard disk drive) backplane to an integrated LVD SCSI controller on the system board.
An additional 16-bit 2-drop SCSI cable is shipped disconnected inside the server.
It is folded and restrained with a cable clamp to the side of the power supply housing.

If you want to install a device in one of the non-hot-swap bays, you can either:

•  Install an additional SCSI adapter and use the 2-drop SCSI cable to attach the device to that adapter.
•  Install a RAID adapter as follows:
  1.  Disconnect the SCSI cable from the SCSI cable extender on the system board.
      See the illustration in 'Installing a hot-plug PCI adapter' for the location of the SCSI cable extender.
      (The other end of the SCSI cable is connected to the SCSI HDD backplane.)
  2.  Connect the end of the SCSI cable that you disconnected from the SCSI cable extender to the RAID adapter.
      The other end of the cable is connected to the SCSI HDD backplane; the drives in the hot-swap bays are now connected to the RAID adapter.
  3.  Connect the 2-drop SCSI cable to the SCSI cable extender on the system board, and attach  the device in the non-hot-swap bay to one of the drops on the other end of the 2-drop SCSI cable.
      The device is attached to the integrated SCSI controller.

SCSI IDs: Each SCSI device that is connected to an individual channel of a SCSI controller needs a unique identification (ID) so that the controller can identify the devices and ensure that different devices do not attempt to transfer data at the same time. If you need to set IDs for SCSI devices, refer to the instructions that come with those devices.

The server automatically sets SCSI IDs for hot-swap hard disk drives.
The SCSI ID assigned to each hot-swap bay is shown on the server beside the bay and in the illustrations in (above shown) 'Internal drive bays'.
The server uses the hard disk drive SCSI IDs to send status information to the indicator lights above each hot-swap bay.

The SCSI backplane in the server supports up to six hot-swap bays.

The processing sequence for SCSI devices proceeds from the lowest SCSI ID to the highest (0 to 5, then 8 to 15).

Termination (internal SCSI devices): SCSI buses must be terminated at each end.
The ends of the SCSI buses in the server are already terminated.

All the hot-swap drives in the server have automatic termination and the SCSI controller provides termination at the other end of the SCSI bus.

You must disable termination on any SCSI devices that you install in the non-hot-swap bays.
Refer to the information that come with the SCSI device for instructions about setting device jumpers or switches that control termination.

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