Content Management
138 SL8500: Systems Assurance Guide • July 2011
• E24254-01
■
Grouping Tape Drives
•
The number of mounts exceeds the capacity of the HandBots.
•
There are too many “active” cartridges to fit on that rail
•
The number of concurrently mounted tapes exceeds the maximum
number of tape drives.
•
Add more tape drives (if possible).
•
Add expansion modules to increase cartridges for that rail
•
Use the TLC/FSM tool to model and re-evaluate the content.
•
Upgrade to an eight HandBot configuration.
During the installation, having an understanding about how to logically group and install the
tape drives in an SL8500 can minimize both elevator and PTP activity. Strategies to use when
determining where to install the tape drives include:
❏
Cluster tape drives
Install tape drives that use the same media types on the same rails.
For example
: place T9840 drives on one rail and T9940 drives on a
different rail with the media to match.
Potential issues:
Clustering tape drives and media on the same rail works well until:
Indicating:
There are too many active cartridges on that rail for the HandBots to
mount (keep up with) or not enough tape drives.
Recommendations:
When resources for a specific workload exceeds the capacity of a rail,
spread the cartridges and drives over two or more rails. Some
suggestions might be to:
❏
Use the CAP
Enter tape cartridges so compatible media is on the same rail with the
tape drives.
For example
: enter cartridges using a CAP magazine adjacent to the
desired rail (LSM) where compatible tape drives are located.
❏
Try not to exceed limits
Configure heavy tape applications so they do not exceed the
performance limits of that LSM and/or library configuration.
For example
: limit peak HSM workloads by the number of concurrent
recalls in that configuration.
❏
Use the TLC/FSM tool
Important:
Use the SE tool Tape Library Configurator / Field Simulation Model
(TLC/FSM) to determine the optimal drive configurations. When you
supply a configuration and a workload (trace file of the mounts),
TLC/FSM can output drive utilization statistics and suggestions.
❏
Redundant HandBot
configurations
When configuring the SL8500 with eight HandBots (two per rail),
install drives in the outer two columns first—this allows both
HandBots to access drives at the same time.
❏
Manage your tapes
Use ExLM to help manage tape locations to provide quick access to
tape drives.
Summary of Contents for StorageTek StreamLine SL8500
Page 4: ...Summary of Changes iv SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 12: ...Contents xii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 18: ...Tables xviii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 76: ...Introduction 56 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 97: ...E24254 01 Chapter 3 Site Survey Forms 77 Site Survey Forms Figure 21 Content Management Plan ...
Page 137: ...E24254 01 Chapter 4 Site Preparation 117 Site Preparation ...
Page 138: ...Site Preparation 118 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 198: ...Electrical Conversions 176 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 206: ...Comparisons 184 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 233: ...E24254 01 Appendix H Partitioning 211 Partitioning Make copies as necessary ...
Page 240: ...Partitioning 218 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 251: ...E24254 01 Appendix J Work Sheets 229 Work Sheets Figure 73 Content Management Work Sheet ...
Page 276: ...Index 254 SL8500 Systems Assurance Guide June 2011 E24254 01 ...
Page 277: ......
Page 278: ...Oracle Corporation Worldwide Headquarters 500 Oracle Parkway Redwood Shores CA 94065 U S A ...