Front-End Directors - Hitachi Virtual Storage Platform G1000 Hardware Manual

Item Name
Power
1
supply
Service
2
processor
(SVP)
Service
3
processor
(SVP)
or Hub
Back-end
4
director or
(optional)
front-end
director
Front-end
5
director
(host I/O
module)
Cooling fan
6
(exhaust)
FED or VSD
7
slot
Note:
1. Achieved FIPS 140-2 Level 1 certification.

Front-end directors

A front-end director (FED) is a pair of blades installed in the controller.
The front-end director connects the storage system to the host servers,
processes channel commands from hosts, manages host access to the cache,
and controls the transfer of data between the hosts and the controller cache.
The following FEDs are available:
• iSCSI
34
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
Table 6 Controller components, rear view
Min Max
2 4
1 2
0 1
0 if 4
diskless
2 with
drives
1 2 to 5 with
drives
6 if diskless
system
5 5
0 4
Storage system hardware overview
200-240 VAC input. Provides power to the controller chassis in a
redundant configuration. Each power supply contains two
cooling fans to ensure constant cooling if one fan fails.
A custom PC monitoring and controlling the storage system. It
contains the Device Manager - Storage Navigator software,
which configures and monitors the system. Connecting the SVP
to a service center enables the storage system to be remotely
monitored and maintained by the support team.
This space can be empty or can contain either a second SVP or
a hub. When a second SVP is installed, the primary SVP is the
active SVP, and the secondary SVP is the hot idle SVP with
active Windows. A hub facilitates the transfer of information
from the VSD pairs to the primary SVP.
Connects the HDDs, SSDs, and FMDs. It controls the data
transfer between the drives and the cache.
VSP G1000, VSP G1500, and VSP F1500 support two types of
back-end directors:
• Standard back-end director
• Encrypting back-end director
Important: Each back-end director and front-end director
consists of a set of two of blades. See
installation on page 38 for details.
A front-end director (FED) provide ports that support
connectivity to the open and mainframe systems belonging to
the customer. In addition, some of the FEDs support
virtualization of externally attached storage, remote replication
between VSP G1000, VSP G1500, and VSP F1500 and other
storage systems, including communication between two Hitachi
storage systems in a global active device cluster. See
directors on page 34 for details.
The exhaust fans on the rear of the controller pull hot air away
from the components and push it out the back of the rack.
The slots on the controller support both front-end directors and
VSDs. Both FEDs and VSDs must be installed in pairs.
Description
1
Flexible front-end director
Front-end