Hitachi G1500 - Back-End Director

Data
transfer
rate
OM2 cable (50/125
μm
multi-mode fiber)
OM3 cable (50/125 μm
laser optimized,
multimode fiber)
OM4 cable (50/125 μm
laser optimized,
multimode fiber)
MBps feet / meters feet / meters feet / meters
800 164 / 50 492.1 / 150 623.4 / 190
1600 118 / 35 328 / 100 410.1 / 125
Table 10 Maximum cable length (longwave)
Data transfer rate ( MBps) OM3 cable length (km)
200, 400, 800, 1600 10
Back-end director
A back-end director (BED) is a pair of blades installed into the controller chassis and it
controls the data transfer between the cache memory and internal drives of the storage
system.
Hitachi oers the following BEDs:
■
Standar
d
back-end dir
ector
■
Encrypting
back-end director
The standard back-end director blades are each equipped with four 6-Gbps SAS ports
and do not support encryption.
The encrypting back-end director (EBED) blades each provide four 6-Gbps SAS ports.
When writing data to the internal drives of the system, the EBED encrypts the data. The
encrypted data-at-rest is unencrypted by the EBED as it is read from the drive. The EBED
is certied as FIPS 140-2 Level 2 compliant to meet the strict security standards of
customers managing storage systems. A Hitachi Encryption License Key must be installed
during installation in order to enable the encryption functionality of the EBED and an
additional license key known as FIPS 140-2 Level 2 License Key must be installed for
operating in compliance with the FIPS 140-2 Level 2 specication. For more information
about the encrypting back-end directors and implementing a storage system with FIPS
140-2 Level 2 compliance, contact a Hitachi Vantara representative.
For more information about FIPS 140-2 criteria and certicate for VSP G1x00, see the
following websites:
■
FIPS 140-2:
http://csrc.nist.gov/groups/STM/cmvp/standards.html
■
FIPS 140-2 Le
vel 2 certicate #2727 for the VSP G1x00:
http://csrc.nist.gov/
groups/STM/cmvp/documents/140-1/1401val2016.htm#2727
Back-end director
Chapter 2: Storage system hardware overview
Hitachi Virtual Storage Platform G1000, G1500, and VSP F1500 Hardware Guide 45