Fiber Optic Host Cables - IBM TotalStorage DS6000 Introduction And Planning Manual

Fiber optic host cables

Each host port requires one LC-LC type fiber optic cable to attach to host systems
or switches. Cables are available with two duplex LC-type connectors (LC-LC type)
of various lengths.
The fiber optic host cables can be multimode 50 micrometers or 9.0 micrometers for
distances up to 300 meters at 2 Gbps performance for the host port.
Table 9 lists the feature codes used to order 50 micron (multimode) host cables for
use with the fibre channel/FICON host shortwave Small Form-factor Pluggable
(SFP) feature (#1310). The cables include a LC connector for attachment to the
DS6800 with SFPs. The cables range from 2 meters to 31 meters in length.
Table 10 on page 36 lists the feature codes used to order a 9 micron (singlemode)
host cable for use with the Fibre Channel/FICON host longwave SFP feature
(#1315). The cables include an LC connector for attachment to the DS6800 SFPs
and are available with an LC connector for attachment to servers and fabric
components. The cables range from 2 meters to 31 meters in length.
Table 8. Disk drive set capacity (RAID 5 arrays) (continued)
Disk Total
size physical
(GB) capacity
(See (GB) per
Note 2) disk drive
set
(See
Note 3)
300 1200
Note:
1. All values for capacity and extent numbers are based on preliminary data.
2. Physical capacities are in decimal gigabytes (GB). One GB is one billion bytes.
3. Although disk drive sets contain 4 drives, arrays use either 4 or 8 drives.
4. In RAID 5 configurations, the parity information uses the capacity of one disk but is
actually distributed across all of the disks within the array.
5. The array consists of 2 data drives and 1 parity drive. One other drive is used as a
spare.
6. The array consists of 3 data drives and 1 parity drive.
7. The array consists of 6 data drives and 1 parity drive. One other drive is used as a
spare.
8. The array consists of 7 data drives and 1 parity drive.
Table 9. Shortwave fiber optic host cables feature codes for DS6800
Feature
Code
1350 2M (50 micron) LC-LC cable
1351 7M (50 micron) LC-LC cable
1352 31M (50 micron) LC-LC cable
Fixed
block
(FB) or
Ranks of RAID 5 arrays (See Note 4)
count key
data
2 + P
(CKD)
(See
Note 5)
FB 561.27
(523)
CKD 555.31
(587)
Cable Type (LC-LC)
Chapter 3. Planning the physical configuration
Effective capacity in G
(Number of Extents)
3 + P 6 + P
(See (See
Note 6) Note 7)
845.03 1692.22
(787) (1576)
832.48 1669.70
(880) (1765)
Quantity
1 per feature
1 per feature
1 per feature
7 + P
(See
Note 8)
1972.46
(1837)
1947.83
(2059)
35