Compaq ProSignia 500 Compaq ProSignia Family of PC Servers Maintenance and Ser - Page 66

Table 5-7. COMPAQ 32-Bit Intelligent Drive Array Controller-2 IDA-2, Maximum Transfer Rate on EISA Bus

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Interleave 1:1 1:1 1:1 Average Seek Time (ms) 12 12 16 Table 5-6. Drive Array Specifications 1020-MB Arrays 680-MB Arrays Number of Drives Two 510-MB Two 340-MB Size 3.5 in 3.5 in Logical Configuration (per physical drive): Cylinders 989 658 Heads 16 16 Sectors per Track 63 63 Bytes per Sector 512 512 Recommended Controller IDA-2 IDA-2 Array Transfer Rate (Mbyte/sec) 4 4 Average Data Service Rate (Requests/sec) 120 119 Table 5-7. COMPAQ 32-Bit Intelligent Drive Array Controller-2 (IDA-2) Dimensions: Height 4.3 in 10.92 cm Depth 5.0 in 12.7 cm Width 13.2 in 33.53 cm Total Weight 13.28 oz 131 g Processor 16-MHz NEC V53 Processor RAM 256-Kbyte 70-ns static RAM Data Transfer Buffer 128-Kbyte 25-ns static RAM Drives Supported Up to six (three drive array pairs) Data Transfer Method 32-bit busmaster Maximum Transfer Rate on EISA Bus 33 MB/sec Simultaneous Drive Transfer Channels Four Reliability Features: Drive Mirroring (RAID 1) Yes Data Guarding (RAID 4) Yes Distributed Data Guarding (RAID 5) Yes Drive Failure Alert System Audible Warning and LED Indicators Rear LED Indicators: Drive Failure Large Amber Drive Activity Indicators Green

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Interleave
1:1
1:1
1:1
---------------------------------------------------------------------------
Average Seek Time (ms)
12
12
16
===========================================================================
Table 5-6. Drive Array Specifications
===========================================================================
1020-MB Arrays
680-MB Arrays
---------------------------------------------------------------------------
Number of Drives
Two 510-MB
Two 340-MB
---------------------------------------------------------------------------
Size
3.5 in
3.5 in
---------------------------------------------------------------------------
Logical Configuration
(per physical drive):
Cylinders
989
658
Heads
16
16
Sectors per Track
63
63
Bytes per Sector
512
512
---------------------------------------------------------------------------
Recommended Controller
IDA-2
IDA-2
---------------------------------------------------------------------------
Array Transfer Rate (Mbyte/sec)
4
4
---------------------------------------------------------------------------
Average Data Service Rate
(Requests/sec)
120
119
===========================================================================
Table 5-7. COMPAQ 32-Bit Intelligent Drive Array Controller-2 (IDA-2)
===========================================================================
Dimensions:
Height
4.3 in
10.92 cm
Depth
5.0 in
12.7 cm
Width
13.2 in
33.53 cm
Total Weight
13.28 oz
131 g
---------------------------------------------------------------------------
Processor
16-MHz NEC V53
---------------------------------------------------------------------------
Processor RAM
256-Kbyte 70-ns static RAM
---------------------------------------------------------------------------
Data Transfer Buffer
128-Kbyte 25-ns static RAM
---------------------------------------------------------------------------
Drives Supported
Up to six (three drive array pairs)
---------------------------------------------------------------------------
Data Transfer Method
32-bit busmaster
---------------------------------------------------------------------------
Maximum Transfer Rate on EISA Bus
33 MB/sec
---------------------------------------------------------------------------
Simultaneous Drive Transfer Channels
Four
---------------------------------------------------------------------------
Reliability Features:
Drive Mirroring (RAID 1)
Yes
Data Guarding (RAID 4)
Yes
Distributed Data Guarding (RAID 5)
Yes
---------------------------------------------------------------------------
Drive Failure Alert System
Audible Warning and LED Indicators
---------------------------------------------------------------------------
Rear LED Indicators:
Drive Failure
Large Amber
Drive Activity Indicators
Green