HP RX8620-32 - Manual (Page 22)

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The core I/O Management Processor, external LAN port, and external SCSI port functionality in the
HP Integrity rx8620-32 Server is the same as described above in the Integrity rx7620-16 Server core
I/O section. However, there are slot count and bus routing differences in the peripheral bay
implementation. The following section pertains specifically to the Integrity rx8620-32 Server
peripheral bay.
Access to internal peripheral bay—The first core I/O card enables half of the Integrity rx8620-32
Server peripheral bay, which includes one removable-media device
and two low-profile disks. The
second core I/O card enables the remaining internal peripherals, two disks, and one removable-
media bay. Customers who require access to more than two internal disks or more than one
removable-media slot will need the second core I/O card and a minimum of two cell boards.
HP Integrity rx8620-32 Server internal peripheral bay
The Integrity rx8620-32 Server internal peripheral bay is located at the top front of the system chassis.
The peripheral bay holds up to four low-profile hot-plug disks and two removable-media devices.
Each Integrity rx8620-32 Server core I/O card contains two dual-channel SCSI controller chips that
support the SCSI devices in the internal peripheral bay. Each core I/O card supports two internal
disks and one removable-media device, each on a dedicated 40 MB/s SCSI channel. If use of more
than two internal disks or one removable-media device is needed, the Integrity rx8620-32 Server will
require both core I/O cards. This architecture also provides an added degree of availability by
supporting full disk mirroring across independent buses, controllers, core I/O cards, and master I/O
controller chips.
Hot-plug disk drives—The Integrity rx8620-32 Server holds up to four SCSI disks, which are
accessible from the front of the server. These are hot-plug disks, so they can be removed and inserted
while the Integrity rx8620-32 Server continues to operate. Three disk sizes are currently supported:
36 GB, 15K rpm; 73 GB, 15K rpm; and 146 GB, 10K rpm.
Removable-media bays—The Integrity rx8620-32 Server contains two removable-media bays, which
support either a DVD drive or DDS-4 DAT drive. Access to these devices is also from the front of the
server. The DVD drive provides enhanced features while preserving backward read compatibility with
CD-ROM drives. Data transfer rates of up to 6.75 MB/s are achieved with the DVD format; 4.8 MB/s
can be achieved using the CD-R format. The DDS-4 drive has a maximum storage capacity of 40 GB,
with a peak transfer rate of 21.6 GB/hour (compressed).
HP Server Expansion Unit
The HP Server Expansion Unit (SEU) is an add-on chassis containing I/O resources that complement
the I/O and partitioning capabilities within the HP Integrity rx8620-32 Server. The Integrity
rx8620-32 Server contains built-in ability to connect to the HP SEU. Connection to the SEU doubles
the amount of Integrity rx8620-32 Server I/O resources, and the SEU enables the creation of two
additional nPars within the chassis. The following features are provided by the SEU:
• 16 high-performance PCI-X I/O slots
• All slots 133 MHz × 64 bit capable
• All slots support hot-plug
• All slots supported by independent dual or single links
• Four disk drive bays
• Two removable media slots (either DVD or DAT)
• Two additional nPars in the Integrity rx8620-16 and rx8620-32 Server host are enabled
• Two core I/O slots
• Redundant and hot-swappable fans and bulk power supplies
• Redundant line cords for dual grid support