HP P9000 Operation & User’s Manual

Text of HP P9000 User Guide:

• HP P9000, DescriptionTypeItem The following information is displayed for the Source LDEV: • LDEV: the ID of the volume is displayed in the following format: LDKC:CU:LDEV. • Emulation: the emulation type of the volume. • Capacity: the capacity of the volume. • RAID: the RAID type of the volume. • Protection: the data protection level. • PG: the parity group ID. If the indicated parity groups are the interleaved parity groups, the only parity group ID displayed will be that of the group at the top of the interleaved parity groups. • H

• HP P9000, 6. As needed, modify any auto migration plan parameters. For details, see “Setting up auto migration plan parameters” (page 26). 7. Click Make New Plan. All the existing auto migration plans are deleted and new auto migration plans are created based on the new settings. Stopping the Auto Migration function Before creating a manual migration plan, the Auto Migration function must be disabled. If you perform a manual migration operation, all current Auto Migration plans are canceled. Procedure 6 To sto

• LDEVs list The LDEVs list contains IDs, emulation type, capacity, and other statistics of each LDEV in the selected parity group, external volume group, or Thin Provisioning group. The list does not include pool volumes, journal volumes, system disks, and quorum disks. DescriptionTypeItem Indicates a normal volume that can be selected as a source volume and migrated to a different parity group

• HP P9000, DescriptionTypeItem The time limit for the execution of an auto migration plan is specified in the Max. migration duration field. Allowable values range from 10 to 120 minutes. If the auto migration plan is not complete within the specified limit, the remaining migration operation(s) are performed at the next scheduled execution time. fieldMax. Migration duration The disk usage limit during the execution of an auto migration plan is specified in the Max. disk utilization field. Allowable values range from 10 to 100 percent. If the most recent usage for any source or target parity group is over this limit when auto migration

• HP P9000, installed, you may use 104,768 or 209,600 differential tables. You may also use 146,688, or 209,600 differential tables. To install additional shared memory for differential tables, call HP Technical Support. • The amount of shared memory available for pair tables. You can install additional shared memory for pair tables. You may use 16,384 pair tables if additional shared memory for pair tables is installed. To install additional shared memory for pair tables, call HP Technical Support. • The emulation type and capacity of each volume to be migrated. The number of differential tables and pair tables needed to migrate one volume differs based on the emulation type and size of the volu

• HDD class and force another volume out of that parity group, the Auto Migration operation requires a minimum of 20 percent difference in estimated disk usage between the two volumes. If the difference in disk usage is less than 20 percent, the migration plan is considered an ineffective strategy, and the volume is not migrated. The following figure illustrates th

• HP P9000, Table 18 RAID Manager Errors Related to Manual Migration Plans (continued) Required ActionMessageError Code (SSB2) Release the setting of Cache Residency, and then migrate the volume. Cache Residency is set on the migration source volume. 2389 Release the setting of Cache Residency, and then migrate the volume. Cache Residency is set on the migration target volume. 238A None. LUSE volumes cannot be specified as source volumes or target volumes. The migration source volume and the migration target vol

• HP P9000, 7 Support and other resources Contacting HP For worldwide technical support information, see the HP support website: http://www.hp.com/support Before contacting HP, collect the following information: • Product model names and numbers • Technical support registration number (if applicable) • Product serial numbers • Error messages • Operating system type and revision level • Detailed questions Subscription service HP recommends that you register your product at the Subscriber's Choice for Business website: http://www.hp.com/go/e-updates A

• HP P9000, History window Figure 15 History Window The following Auto LUN operations may be performed with the Manual Migration window: • “Viewing the migration history logs” (page 30) The History window displays information about successful and failed Auto Migration and Manual Migration plans. The History window contains Auto Migration History and Migration History sections are described in the following table. DescriptionTypeItem Auto Migration History section This list is a log of Auto Migration plans that have been created and executed. Each entry has a time stamp. See “Auto migration messages” (page 31) for more info

• HP P9000, 5. In the navigation tree, double-click the HDD class in which you would like to reserve a volume. The HDD class folder expands and parity groups in that HDD class can be viewed. 6. In the expanded HDD class folder, select a low-usage parity group. The volumes contained in the selected parity group load in the “Parity Group list” (page 59). 7. In the “Parity Group list” (page 59), right-click a volume with the icon to reserve that volume as a target volume candidate, and then select Reserved LDEV from the pop-up menu. 8. Click Apply to reserve the volume. An icon should appear adjacent to the volume. To change a reserved volume to a normal volume, right-cl

• HP P9000, Auto LUN can now create and execute migration plans. Auto LUN creates plans 30 minutes later than the specified Sampling Term (for example, if 13:00 - 15:00 is specified, a plan will be created at 15:30). The migration plans will be executed on the specified day at the specified Migration Time. Deleting auto migration plans You can change or cancel auto migration plans before they are executed. If you delete an auto migration plan which is being executed, the data in the target volume is not guaranteed. Procedure 4 To delete auto migration plans: 1. Click Actions→Other

• HP P9000, • IBM 3390 Concurrent Copy volumes • Volumes reserved by a migration program other than Auto LUN • Volumes undergoing a Quick Format operation • Volumes in an abnormal or inaccessible condition (such as, pinned, tracked, or fenced) • External Storage Access Manager P-VOLs or S-VOLs The following table lists the volumes and volume types that can and cannot be considered as candidates for source and/or target volumes for an Auto LUN operation. The table is categorized by program product. Table 2 Candidates for Source and Target Volumes by Program Product Target Volume Candidate?Source Volume Candidate?Volume Type/StatusProgram Product Yes,

• HP P9000, Interoperability of Auto LUN and RAID Manager When you perform a manual Auto LUN plan by using RAID Manager commands, note the following: • A volume reserved through Auto LUN cannot be used as a target volume. • A migration plan being executed by Auto LUN cannot be canceled using RAID Manager. • A migration plan created by Auto LUN cannot be displayed using RAID Manager. • Click File→Refresh All on the menu bar of the Remote Web Console main window to check RAID Manager settings in Remote Web Console. • While the

• Table 13 Stopped Auto Migration Plan Messages (continued) DescriptionMessage The disk usage rate of the parity group including the source volume is over the specified limit. Or, the disk usage rate is unknown. If applicable, increase the Max. disk utilization value in the Auto Plan Parameters section of the Auto Plan window and reinstate the auto migration plan. Th

• B Auto LUN GUI reference The GUI elements of Auto LUN windows are summarized. Auto LUN window This section describes the fields in the Auto LUN window.s Figure 11 Auto LUN Window DescriptionTypeItem Enable: Performance Monitor is monitoring the storage system. Disable: The storage system is not being monitored. fieldMonitoring Switch Specify a period in which to gather usa

• HP P9000, The Source LDEV section displays the current usage rate for the source volume’s parity group and an estimated usage rate for the parity group after the proposed migration plan. The Target (Reserved) LDEV section displays the current usage rate for the target volume’s parity group and an estimated usage rate for the parity group after the proposed migration plan. The line graph illustrates the past usage rates of the source volume and the target volume. 10. If the estimate shows acceptable disk performance, click Close and go to the next step. If not, restart at the beginning of this task and select a different source and/or target volume. 11. Click Set to add th

• HP P9000, Table 2 Candidates for Source and Target Volumes by Program Product (continued) Target Volume Candidate?Source Volume Candidate?Volume Type/StatusProgram Product NoNoA volume in COPY (SP) or PSUS (SP) status Business Copy NoNoA volume in SP-Pend or V-Split status Business Copy Z NoNoA volume with data stored in cache Cache Residency and Cache Residency Z NoYesIndividual LDEV within expanded LU LUN Expansion (LUSE) NoYes. If all LDEVs are used, make sure that an adequate amount of target volumes are reserved. All LDEVs in an expanded LU NoNoA volume undergoing an Auto

• HP P9000, Target (Reserved) LDEV list The Target (Reserved) LDEV list contains IDs, emulation type, capacity, and other statistics of each reserved LDEV in the selected parity group, external volume group, or Thin Provisioning group. The reserved LDEV fields are summarized in the following table. DescriptionTypeItem Indicates the LDEV ID of the volume in the following convention: LDKC:CU:LDEV fieldLDEV identifier Indicates the emulation type of the volume (VLVI or LUN).fieldEmulation Indicates the capacity of the volume.fieldCapacity Indicates the average usage

• HP P9000, NOTE: In a manual migration plan, you can specify a volume in a fixed parity group as a target or a source volume. Auto Migration Parameters The current values of Auto Migration Parameters are initialized each time a change is made to the storage system configuration. For example, the parameter values are initialized when new drives or LDEVs are installed. Keep in mind that changes to Auto Migration Parameters may be required each time a change is made to the storage system configuration. Auto LUN allows you to automate the creation and execution of migration plans. If you automate creation and execution of migration plans, Auto

• HP P9000, HP StorageWorks P9000 Auto LUN User Guide Abstract This guide explains how to balance system workloads and improve performance by migrating high-usage volumes to low-usage and high-performance disks using HP StorageWorks P9000 Auto LUN Software. Topics include how to create and execute migration plans manually and automatically and how to troubleshoot errors. The intended audience is a storage administrator with independent knowledge of HP StorageWorks P9000 disk arrays, the HP StorageWorks Remote Web Console, and the operating system and web browser on the HP StorageWorks Remote Web Console. HP Part Number: AV400-96358 Published: May 2011 Edition: Fourth

• Table 18 RAID Manager Errors Related to Manual Migration Plans (continued) Required ActionMessageError Code (SSB2) The volume cannot be migrated. Check the configuration definition file The migration source volume is a quorum disk.2039 The volume cannot be migrated. Check the configuration definition file. The migration target volume is a quorum disk.203a Specify a volume whose capacity is s

• HP P9000, Common elements The top-level elements and the four tabs of the Auto LUN window are summarized in the following table. DescriptionTypeItem The starting and ending times for collecting performance and usage statistics for HDD classes, parity groups, and volumes. Auto LUN analyzes disk usage information collected by Performance Monitor during the monitoring period, and then calculates estimated usage rates of the source and target parity groups after a proposed volume migration. The program does not calculate estimated usage rates of external volume groups. fieldMonitoring Term Displays the data collection interval used in Performance Monitor. Th

• HP P9000, DescriptionTypeItem Indicates the capacity of the volume.fieldCapacity Indicates the RAID type of the source volume.fieldRAID Indicates the data protection level of the source volume.fieldProtection Indicates the parity group ID or the external volume group ID of the source volume. The number before the hyphen (-) is the frame number. The number after the hyphen is the group number. If the indicated parity groups are the interleaved parity groups, this item only displays the ID of the parity group at the top of the interleaved parity groups. fieldPG Indicates the type of hard disk drive containing the source volume.fieldHDD Indicates the number and name of the CLPR corresponding

• HP P9000, • http://www.hp.com/support/downloads • http://www.hp.com/storage/whitepapers Conventions for storage capacity values P9000 disk arrays use the following values to calculate physical storage capacity values (hard disk drives): • 1 KB (kilobyte) = 1,000 bytes • 1 MB (megabyte) = 1,000 2 bytes • 1 GB (gigabyte) = 1,000 3 bytes • 1 TB (terabyte) = 1,000 4 bytes • 1 PB (petabyte) = 1,000 5 bytes • 1 EB (exabyte) = 1,000 6 bytes P9000 disk arrays use the following values to calculate logical storage capacity values (logical devices): • 1 KB (kilobyte) = 1,024 bytes • 1 MB (megabyt

• HP P9000, DescriptionTypeItem Displays the event type.fieldAction Displays the source volume and the parity group (or the external volume group if applicable). If the source parity groups and target parity groups are the interleaved parity groups, the parity group ID at the top of the interleaved parity groups appears. fieldSource[Parity Gr.] Displays the target volume and the parity group (or the external volume group if applicable). If the source parity groups and target parity groups are the interleaved parity groups, the parity group ID at the top of the interleaved parity groups appears. fi

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