IBM RS/6000 7311-D20 I/O Expansion Drawer

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IBM RS/6000 7311-D20 I/O Expansion Drawer

IBM RS/6000 7311-D20 I/O Expansion Drawer Overview


7311-D20 Rack-Mounted High-Density Expansion Drawer

The 7311-D20 is a rack-mounted high density expansion drawer that attaches to the eServer pSeries 630 7028-6C4 to provide remote I/O.

It includes: 7x Hot Swap PCI-X 64-bit 133MHz 3.3 volt I/O slots 12x Hot Swap disk drive bays consisting of two 6-packs (optional) Redundant Hot Swap power supplies and fans (optional).

The 7311-D20 occupies 4U of rack space and mounts in a 19-inch standard rack drawer.

The fans, power supplies, and PCI adapters, are top-accessible while the disk drives are front-accessible for easy service and maintenance.

A total of two Model D20s can be attached to a pSeries 630 7028-6C4.

Limitations Optional SCSI backplane (FC 6429), Ultra3 SCSI PCI Adapter (FC 6203) or Ultra3 SCSI RAID adapter (FC 2498), and cables (FC 4257) are required to support the disk drives installation.

If the disk drives in the Model D20 are being used to support 2 LPARs, two SCSI adapters must be installed in the Model D20; one to support each 6-pack of DASD.

The optional SCSI backplane (FC 6429) consists of two 6-pack DASD bays.

The first Model D20 ordered requires 2 RIO cables and 2 SPCN cables to be on the order. A second D20 requires a third cable. These cables can be ordered as part of the Model D20 order or as part of the Model 6C4 order. However, the configurator validates system connections when the Remote I/O cables/SPCN cables are ordered on the Model D20. Anytime Remote I/O cables/SPCN cables are ordered on the Model 6C4, system validation cannot be performed.

To attach the 7311-D20, the pSeries 630 7028-6C4 must have either one of the following installed: FC 9575 RIO Ports and LPAR Enablement (Initial order only) FC 6575 RIO Ports (MES order only)


Operating Environment

5 to 35 degrees C (41 to 95 degrees F)
Relative Humidity
8 to 80 (percent)
Wet Bulb
(Power Off) 27 degrees C (80 degrees F)
Power Requirements
227 watts (Typical configuration)/340 watts (Maximum configuration)
Power source loading
239 kVA (Typical configuration)/358 kVA (Maximum configuration)
Thermal Output
774 Btu/hr (Typical configuration)/1161 Btu/hr (Maximum configuration)
Maximum Altitude
3,050 meters (10,000 ft)
Noise Level
6.1 bels (Operating)/6.0 bels (Idle)

Physical Specifications

482 mm (19.0 in)
610 mm (24.0 in)
178 mm (7.0 in)
45.9 kg (101 lb)

Hardware Requirements

I/O Riser Card (Default FC 6413 RIO Ports to I/O Planar Riser Card)
Power Supply (Default FC 6268 435W AC Power Supply)
Power Specify (Default FC 9172 AC Power Specify)
Power Cord Specify
Language Group Specify
Remote I/O (RIO) Cables (FC 3147 or 3148)
SPCN Cables (FC 6001 or 6006 or 6007 or 6008)


Express Computer Systems state-of-the-art engineering lab and certified technicians will make sure that your IBM RS/6000 7311-D20 I/O Expansion Drawer is tested rigorously and in perfect working condition. To back it up, we carry a 100% Satisfaction Guarantee on all of our used and refurbished gear, in addition to one of the industries best warranties.

Shipping Policy

We stock all of our products. Items are fully tested and professionally packaged to ensure functionality on arrival.

The 7311-D20 will ship the same day if the order is received with sufficient testing and packaging time.

*Alaska and Hawaii customers, please contact us for a shipping quote.

Shipping Methods

We ship via Fedex. Next Day and expedited shipping services are available. Please contact us for a quote to upgrade shipping.

We can also ship via UPS or FedEx on your account number. Other freight and carrier services are available, please contact us at to make arrangements.

Pickup & Delivery

Local customers may also arrange for pickup or delivery of items.

Net Terms

Approved Educational, Government, and Corporate customers may submit a purchase order to purchase the 7311-D20.

Please contact us and we will FAX or Email you a credit application.

Finance & Leasing Options

We have solutions to help you finance your purchase. Please contact us at to learn more about our finance and leasing options.

Credit Card

To pay via credit card, please call us at (800) 327-0730


FAX your card type, card number, expiration date, name as it appears on the card, complete billing address including apartment number, zip code and phone number to us at (800) 327-0730.

Wire Transfer

International buyers must pay via Wire Transfer.

Please email us at to purchase this product with a wire transfer.


Business and Personal Checks must clear prior to shipment.