Grass Valley K2 Summit Storage Area Network v.7.1 - Manual (Page 389)

389 K2 Storage Area Network Installation and Service Manual 26 October 2009
Chapter 11 Overview of K2 Storage Tools
The Storage Utility is your primary access to the media file system, the media
database, and media disks of the K2 SAN for configuration, maintenance, and repair.
It is launched from the K2 System Configuration application.
CAUTION: Use the Storage Utility only as directed by a documented
procedure or by Grass Valley Support. If used improperly, the Storage
Utility can render your K2 SAN inoperable or result in the loss of all
your media.
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 K2 System Configuration 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
K2 System Configuration application. To maintain a valid K2 SAN all
configuration must be controlled and tracked through the K2 System Configuration
application.
Refer to Chapter 12, Administering and maintaining the K2 SAN for procedures for
using Storage Utility.
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.
Storage Utility labels this group of disks a RANK. This is different than previous
versions of Storage Utility which labeled the group of disks a LUN. Storage Utility
on the stand-alone storage K2 client also labels the group of disks a LUN:
This name change is necessary because the maximum disk size recognized by some
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, but combines multiple LUNs into a larger size RANK, to support
the K2 SAN.
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