GRASS VALLEY K2 SAN, Инструкция по установке и обслуживанию

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The Storage Utility’s primary functionality is hosted by the K2 Media Server. The Storage Utility
uses the Fibre Channel connection between the K2 Media Server and the RAID storage device for
access and configuration. When you launch Storage Utility from the K2Config application on the
control point PC, you use a Storage Utility remote interface to control the main application as it
runs on the K2 Media Server.
The Storage Utility requires that the storage system be in an offline operating mode before it allows
any configuration to take place. Take your K2 SAN devices offline before configuring with Storage
Utility. This means all media access operations are disabled while you are using the Storage Utility.
NOTE: Do not run Storage Utility as a stand-alone application, separate from the K2Config
application. To maintain a valid K2 SAN all configuration must be controlled and tracked through
the K2Config application.
NOTE: Do not use the MegaRAID utility on a K2 system. This utility is for use by qualified Grass
Valley Service personnel only. When this utility is opened it scans the SCSI bus and interferes
with record and play operations.
About RANKs and LUNs in Storage Utility
With Storage Utility you bind disks into a group. This group is a logical unit recognized by the
Windows operating system, the media file system, and other software. A logical unit is called a
LUN, which stands for Logical Unit Number. You can combine one or more LUNs into a group
called a RANK.
Storage Utility for K2 SAN uses RANK to define the group. In contrast, Storage Utility for
stand-alone K2 storage uses LUN to define the group.
The distinction between LUN and RANK is necessary because the maximum disk size recognized
by some older Windows operating systems is relatively low, and in a K2 SAN with large capacity
disks, a group of disks can exceed this maximum size. To solve the problem, Storage Utility binds
disks as smaller size LUNs which can be recognized by the Windows operating system as a logical
disk. Then multiple LUNs are combined into a RANK, as required to support the K2 SAN.
K2 software version 9.0 and higher takes advantage of recent Windows operating systems that have
a much higher maximum disk size and are able to accommodate LUNs with large capacity disks.
So for systems new with K2 software version 9.0 and higher, all binding of disks must be one LUN
per RANK. However, for the purpose of expanding existing storage pools, binding multiple LUNs
per RANK is still available.
In Storage Utility, there is no operational difference between what is currently labeled a RANK and
what was previously labeled a LUN. The tasks you perform are identical. However, Storage Utility
reports the number of LUNs in each RANK, which is useful information if you need to view disks
from Windows operating system administrative tools.
In systems on which Storage Utility bound disks to fit the limitations of the older Windows operating
systems, LUNs per RANK are as follows:
RAID 6 RAID 5 Drives
1 LUN/RANK 2 LUNs/RANK 500 GB 7.2K
4 LUNs/RANK 4 LUNs/RANK 600 GB 15K
260 K2 SAN Installation and Service Manual 2014 01 27
Overview of K2 Storage Tools