Adaptec GDTSETUP Manual do Utilizador descarregar pdf (Página 19)

$3URGXFW'HVFULSWLRQ

$,QWHOL5',23URFHVVRU

The i960RD I/O processor is a member of a new RISC CPU generation which was specifically

designed for I/O applications. This CPU on an ICP Controller can reach a performance of

MIPS

and supervises all tasks of the Fibre Channel / SCSI devices, the RAID controlling and

the communication with the PCI computer. In doing so, it significantly offloads the PCI

computer, leaving it free to perform its original tasks.

$$UFKLWHFWXUH*HQHUDO%,7

To meet the demands on a high performance controller, the bus architecture of the ICP

Controller has a general

32-bit

layout.

 32-bit control processor (i960RD (TM) I/O Processor)

 32-bit SCSI processors

 32-bit bus-interface (PCI)

 32-bit Cache RAM

$&DFKH5$0([SDQGDEOHWR0%

The cache RAM of a ICP Controller consists of one standard PS/2, 72 PIN, 32-bit or 36-bit,

SIMM (

ingle

nline

emory

odule). This can be a Fast Page Mode (FPM) SIMM with an

access time of 60ns (or less), or an Extended Data Out (EDO) SIMM with an access time of

50ns. Operation of the controller with an EDO SIMM increases the controller's overall per-

formance.

The cache size is flexible as different memory sizes can be obtained by using different

SIMMs. Thus, the memory can be expanded to 4MB, 8MB, 16MB, 32MB, 64MB or 128MB.

An intelligent multi-level cache algorithm ensures that a high hit rate (cache hit) is

achieved. Both, look-ahead and special delayed-write cache functions are implemented.

With the GDT configuration program "GDTSETUP" and the monitoring utility GDTMON, the

user can adjust various cache parameters.

$&RPSDWLELOLW\3&,

The controllers of the GDT series have been developed in accordance with the 2.1 PCI-Bus

specifications. They perform full bus-master DMA.

$8SWR:LGH8OWUD6&6,&KDQQHOV1DUURZ8OWUD6&6,&KDQQHO

The ICP Controllers are available with up to five Wide/Ultra2 SCSI Channels. In addition all

models have a Narrow/Ultra SCSI channel for legacy SCSI devices. Per Wide/Ultra2 SCSI

Channel up to

15 Ultra2 SCSI devices

can be connected. The maximum data transfer rate

80MB/sec on the Wide/Ultra2 SCSI Channel

and

20MB/sec on the Narrow/Ultra SCSI

channel.

The Wide/Ultra2 SCSI channels are equipped with a SE/LVDS (Low Voltage Differential Sig-

naling) Termination, which has an automatic detection of SE or LVDS mode operation. The

Narrow/Ultra SCSI channel has a SCSI-2-compliant (alternative 2), active termination. The

termination of all SCSI channel is software-switchable. The Wide/Ultra2 SCSI channels

allow for a separate termination of the lower and higher byte of the SCSI bus.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 217 218

Comentários a estes Manuais

Sem comentários

Adaptec GDTSETUP Manual do Utilizador Página 19

Comentários a estes Manuais

Manuais e produtos relacionados com Software Adaptec GDTSETUP