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AS/400 (iSeries) 9406-820
Model 820 Capacity NOTE: Capacities shown are for new models shipped from the plant and include any prerequisite expansion features. Some combinations of devices may be subject to configuration restrictions.
SWG = Software Group Hardware Options Memory Options The model 820 supports from 256MB to 32GB of memory or main storage. Memory features are available in the following capacities. Up to 32 memory slots are available. Memory features or DIMMs are plugged in pairs or quads of the same capacity.
I/O Towers Up to five PCI I/O towers or expansion units can be attached to the Model 820 via a High Speed Link (HSL) loop. These towers or expansion units include:
Disk Options iSeries supports either internal or external disk drives. Most iSeries customers choose internal disk drives for their ease of management and ordering, total storage solution price, balanced performance, convenient packaging structure and reliability. iSeries native (internal) disk drives are physically housed in iSeries system unit or expansion towers. They are ordered by iSeries feature code numbers. Currently IBM offers 17.54GB or 35.16 disk drives for iSeries Model 820. 8.58GB drives are also available through December, 2002. These drives are industrial strength drives which have iSeries performance/reliability functions. These drives are supported by iSeries disk controllers and I/O processors within the iSeries which provide additional performance and reliability benefits.
External disk drives are ordered with their own type/serial number and housed outside of the iSeries or AS/400 system units or expansion towers. The best IBM option for external disk is the IBM Enterprise Storage System (ESS). The ESS is attached by an iSeries Fibre Channel disk controller. The Fibre Channel controller is used for most storage area network (SAN) connections. Disk mirroring support is built into OS/400. RAID-5 support is also built into OS/400 for internal drives, but also requires selecting an iSeries disk controller which supports RAID capabilities and an adequate number of disk drives. Current disk controller offerings include:
The Model 820 can support multiple disk drive sizes (capacities) which can be mixed, but most customers choose to keep them close to the same size within a partition or ASP for operational flexibility and balanced performance considerations. The base 820 has space for 6 internal disk drives which can be expanded to 12 disk slots. Combined with optional, physically separate PCI expansion towers provide up to 225 additional disk drives as well as additional PCI slots. Save/Restore OptionsTape drives provide a very cost-effective means for backup/restore, near online and archival storage of your organization's information. They also provide an alternate IPL location capability, data migration and program distribution capability. IBM offerings incorporate the latest technology to ensure the highest data integrity, reliable back-up and restore in a timely manner. IBM tape products range from small single tape drives to large tape libraries capable of managing thousands of terabytes of data. DVD-RAM is another backup/restore alternative which can be lower cost if it also used in place of the CD-ROM drive. However, it is much slower and requires more manual intervention than most of the tape drives except perhaps the 4GB tape drive. Tape is usually a better option on most Model 820 configurations. Internal tape drives are physically enclosed in iSeries and AS/400 system or expansion towers. They are ordered by feature code numbers associated with the iSeries or AS/400. QIC (Quarter Inch Cartridge) technology is the most commonly used internal tape technology on iSeries due to its cost effectiveness, performance, packaging convenience and reliability. Internal QIC drives include:
The Model 820 has space for two internal removable media devices. One must be either a CD-ROM or a DVD-RAM. The other can be an internal tape drive. To reduce cost and save PCI slots, the internal tape drives are usually driven by the same PCI controller which drives the internal disk drives. External tape drives can also be used, but a separate PCI tape controller must be used. Tape drives that are ordered with their own type/serial number and housed outside of the iSeries system units or expansion towers are called external tape drives. Shops using IBM tape libraries or the largest/fastest possible tape drives will usually use external tape. Current examples include the IBM LTO 3580 Ultrium and IBM Magstar 3590. External QIC and 8mm options are also available. iSeries supports several tape controllers or Magnetic Media Controllers which support external tape drives include:
Using PCI I/O adapters (IOAs) iSeries supports the popular connections including:
Rack Options The Model 820 does not require a rack. It is a stand-alone unit and does not fit into a standard 19" rack. The 820 I/O towers can be racked |
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