AMX Rack Rail Kit MMS Servers Specifications download pdf (Page 63)

Chapter 2. Architecture and technical overview 49

Draft Document for Review May 28, 2009 1:59 pm 4405ch02 Architecture and technical overview.fm

2.9.2 Split backplane

As described in paragraph 2.9.1, “Integrated RAID options” on page 48 the same features are

required to split the 6-pack DASD backplane in two groups of three disks. Using feature 3650

and 5900 disk 4,5, and, 6 are managed using the external SAS controller. Disk 1, 2, and 3 are

managed by the internal SAS controller.

2.9.3 Internal media devices

Inside each CEC drawer in the 570 there is an optional media backplane with one media bay.

The internal IDE media bay in separate CEC drawers can be allocated or assigned to a

different partition. The media backplane inside each CEC drawer cannot be split between two

logical partitions.

2.9.4 Internal hot-swappable SAS drives

The 570 can have up to six hot-swappable disk drives plugged in the physical 6-pack disk

drive backplane. The hot-swap process is controlled by the virtual SAS Enclosure Services

(VSES), which is located in the logical 6-pack disk drive backplane. The 6-pack disk drive

backplanes can accommodate the devices listed in Table 2-14

Table 2-14 Hot-swappable disk options

Prior to the hot-swap of a disk drive in the hot-swappable-capable bay, all necessary

operating system actions must be undertaken to ensure that the disk is capable of being

deconfigured. After the disk drive has been deconfigured, the SAS enclosure device will

power-off the slot, enabling safe removal of the disk. You should ensure that the appropriate

planning has been given to any operating-system-related disk layout, such as the AIX Logical

Volume Manager, when using disk hot-swap capabilities. For more information, see Problem

Solving and Troubleshooting in AIX 5L, SG24-5496.

3651 + 5900 or 5909 A hardware feature that occupies PCIe slot P1C3 provides a mini

SAS 4x connector to the rear bulkhead and allows all of the internal

SAS drives to be controlled using an external SAS controller.

Feature Description

Feature code Description

3646 73.4 GB 15,000 RPM SAS hot-swappable disk drive

3647 146.8 GB 15,000 RPM SAS hot-swappable disk drive

3548 300 GB 15,000 RPM SAS hot-swappable disk drive

Note: We recommend that you follow this procedure, after the disk has been deconfigured,

when removing a hot-swappable disk drive:

1. Release the tray handle on the disk assembly.

2. Pull out the disk assembly a little bit from the original position.

3. Wait up to 20 seconds until the internal disk stops spinning.

Now you can safely remove the disk from the DASD backplane.

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AMX Rack Rail Kit MMS Servers Specifications Page 63