Preparing nearline 10 devices – Grass Valley K2 Storage System Instruction Manual v.3.2 Sep.24 2007 User Manual
Page 605
September 7, 2007
K2 Storage System Instruction Manual
605
Preparing nearline 10 devices
The non-redundant Nearline storage system has one Gigabit Ethernet switch. The
redundant Nearline storage system has two Gigabit Ethernet switches, connected by
Inter-Switch Links (ISLs) to support a redundant Ethernet fabric.
The storage system has one (non-redundant) or two (redundant) NH K2 Media
Servers. These can be NH1 (one Gig FTP bandwidth) or NH1-10GE (ten Gig FTP
bandwidth) servers, but all NH servers on a system must be of the same type: either
all NH1 or all NH1-10GE. The NH server for a Nearline system has two ports for
Fibre Channel connections. NH servers do not have media (iSCSI) ports.
A NH server on a Nearline system is configured with roles of FTP server and Media
file system server. On a redundant system these roles are identical on both servers and
provide redundancy as follows:
• FTP server — On a redundant system both servers are active in this role
simultaneously. To provide FTP redundancy in the event of a server failure, your
facility’s FTP system must be able to access alternate FTP servers.
• Media file system server — On a redundant system only one server is active at any
one time in this role, and the media file system provides redundancy. If a fault
occurs on the active server, one of the other servers automatically takes over as the
active media file system server.
In the Nearline system no K2 Media Servers take the role of iSCSI bridge or media
database server.
No K2 Media Clients or any other generic client are part of the Nearline system.
SATA drives provide the primary media file storage on a Nearline system. While
these drives do not provide the high bandwidth of the SAS drives required by an
online K2 storage system, they offer larger capacity and lower cost. This makes
SATA drives ideal for the Nearline storage system.
The primary RAID chassis has one controller (NL10) or two controllers (NL10R).
The primary RAID chassis is connected via Fibre Channel to the NH server. In the
redundant system, these Fibre Channel connections access the disks simultaneously
for increased bandwidth. Each controller in the RAID chassis is also connected to the
GigE control network, which is required for SNMP (NetCentral) monitoring.
There must be one primary RAID chassis and may be up to six optional Expansion
chassis. Primary chassis and Expansion chassis contain twelve SATA drives. All
disks (SATA) in both primary and optional Expansion chassis are bound as RAID 6.
The K2 configuration control point PC is connected to the GigE control network. The
K2 System Configuration application runs on this PC for configuring the storage
system.
Description of K2 Storage Devices for more information. Also
“Design considerations for Ethernet switches” on page 759
.
Preparing nearline 10 devices
Use the topics in this section to prepare each device so that it is ready to become part
of the nearline 10 storage system.
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