Each FICON attachment can support up to 512 logical channels. At 16 Gbps speed, the total cable length cannot exceed the following lengths: 

– 130 meters (426.5 feet) using 50-micron OM4 (47000 MHz*km) Aqua blue-colored fiber 

– 100 meters (328 feet) using 50-micron OM3 (500 MHz*km) Orange-colored fiber 

– 35 meters (114.8 feet) using 50-micron OM2 (500 MHz*km) Orange-colored fiber 

GLYPH<SM590000> FC 3403 (16 Gb FICON Long Wavelength Attachment) provides one long-wavelength FICON adapter, with an LC Duplex connector, for the attachment to a FICON host system long wave channel that uses a 9-micron single-mode fiber cable. The total cable length cannot exceed 10 km (6.2 miles). Each FICON attachment can support up to 512 logical channels. 

Requirement:  FC 3401 (Enable 8 Gb or 16 Gb FICON dual port) enables the second port on each installed 8-Gb or 16 Gb FICON adapter. 

## Extra cables, fabric components, and cabling solutions 

Conversion cables from SC Duplex to LC Duplex are available as features on IBM Z platforms if you are using cables with SC Duplex connectors that now require attachment to fiber components with LC Duplex connections. Extra cable options, along with product support services, such as installation, are offered by IBM Global Technology Services. 

For more information about Fibre Channel cable planning, see IBM Virtualization Engine TS7700 Introduction and Planning Guide , GA32-0568. 

If Grid Enablement (FC4015) is ordered, Ethernet cables are required for the copper/optical 1 Gbps and optical LW adapters to attach to the communication grid. 

## 7.2 TS7700 component upgrades 

Several field-installable upgrades give a TS7700 more functions or capacities. This section reviews the TS7700 component FC upgrades. 

## 7.2.1 TS7700 concurrent system component upgrades 

Concurrent system upgrades can be installed while the TS7770 is online and operating. The following component upgrades can be made concurrently to an onsite TS7770: 

GLYPH<SM590000> Secure data transfer FC 5281 

Secure data transfer offers next-level cybersecurity with SP 800-131A-compliant encryption for secure file transfer between TS7700 clusters within a grid and logical volume data encryption, including remote reads, writes, and replication. Secure data transfer supports TLS 1.2 by using AES128 or AES256 bit encryption and uses the POWER8 (VEC) and POWER9 (VED) in-core cryptographic acceleration. Encryption settings can be enabled and disabled through the management interface concurrently. 

GLYPH<SM590000> Capacity on Demand 

This component allows clients to enable disk capacity in 20 TB and 100 TB increments concurrently. Consider the following points: 

– A total of 10 FC 5262 for 20 TB are required before the first instance of feature number 5263 100 TB cache enablement can be installed. 

