HP P9000 Operation & User’s Manual

Text of HP P9000 User Guide:

• HP P9000, The following example shows an exported text file. Explanations follow the example. 2002/07/25 20:26:43,Pairing Start,00:1a:80,-----,00:1a:85 2002/07/25 20:25:30,Pair Delete,00:00:84,-----,00:00:86 2002/07/25 17:01:33,Suspend Operation,00:00:85,-----,00:00:87 2002/07/19 20:01:58,Pair Resync. Complete,00:1a:80,-----,00:1a:9e,000:00:02 2002/07/19 20:01:56,Pair Resync. Start,00:1a:8a,-----,00:1a:a8 2002/07/18 09:36:22,Pairing Complete,00:1a:80,-----,00:1a:85,000:00:10 (1) (2) (3) (4) (5) (6) (1) Data and time when the operation finished. (2) Status (3) LDKC, CU, and LDEV numbers of the acces

• HP P9000, 7. In the Controller ID box, select the remote system’s controller ID. 8. In the Logical Adr. (RCU CU) box (appears when specific CU selected - not CU Free), enter the CU number of the RCU being added. The CU number differs by the specified controller ID, as follows: • When the specified controller ID is 6 (P9500) or 5 (XP24000/XP20000 Disk Array), you can select a CU number from 00 to FE. • When the specified controller ID is 4 (XP12000 Disk Array/XP10000 Disk Array), you can select a CU number from 00 to 3F. 9. In the SSID boxes (appe

• HP P9000, Table 24 General troubleshooting (continued) Corrective actionError See “Pinned track recovery” (page 80) for more information.There is a pinned track on a Continuous Access Synchronous volume. Because the time setting of SVP is changed, the monitoring data might not be updated. Disable Monitoring Switch, then enable again. For more information on Monitoring Switch, see the HP StorageWorks P9000 Performance for Open and Mainframe Systems User Guide. Monitoring data is not updated though the Monitoring Switch option is set to Enable. Table 25 Troubl

• HP P9000, LUN Manager • LUN Manager operations do not affect Continuous Access Synchronous operations. • Volumes that are under secure ports and/or that are assigned to host groups can also be assigned to Continuous Access Synchronous pairs. • Volumes that are assigned to Continuous Access Synchronous pairs can also be assigned to secure ports and host groups for LUN Manager. • Continuous Access Synchronous S-VOLs cannot be accessed by any UNIX/PC server host except when the pair is split. For more information on LUN Manager, see the HP StorageWorks P9000 Provisioning for Open Systems User Guide. Thin Provisioning A Thin Provisioning virtual volume (V-VOL) can be assigned to Continuous Acc

• HP P9000, Delete Continuous Access Synchronous You can delete the Continuous Access Synchronous relationship between the primary and secondary systems. Prerequisite information • All Continuous Access Synchronous pairs must be deleted. • All logical paths will be deleted when the relationship is deleted. • Deleting the Continuous Access Synchronous relationship with a remote system does not affect the Continuous Access Synchronous operations between other primary system CUs and that secondary system. • After a secondary system is deleted, you can reconfigure the data path to add another secondary system (RCU) to the primary system, or you can remove the data path

• Planning volume pairs To plan Continuous Access Synchronous pair volumes, you need to do the following: • At the local site, identify the volumes that contain important data to be backed up. • At the remote site, set up the volumes that will hold the copied data. Volume pair requirements and recommendations The following requirements and information are provided to help you prepare Contin

• HP P9000, Figure 5 Extender connection Set port topology to the following: NL/FL port: Fab on, FC-AL F port: Fab on, Point-to-Point • Best practice is to create at least two independent data paths (one per cluster) between the primary and secondary systems for hardware redundancy for this critical element. • When 4,000 pairs or more are used, we recommend that you restrict the number of pairs when creating pairs, so that 4,000 pairs or less use one physical path, to distribute load on the physical path. • The same write-workload would be used in the reverse

• 8 Data migration.........................................................................................64 Migrate data.........................................................................................................................64 9 Planning and procedures for disaster recovery..............................................65 Disaster recovery overview..........................

• HP P9000, When you start the initial copy, you will specify whether to manage differential data by Tracks or Cylinders. In Remote Web Console, you also have the Auto option. With Auto, either Cylinder or Track is used, depending on the basic size of the LU. • When creating a pair with RAID Manager, the Auto option is not available. If you do not specify anything, Track is used. • If VLL is used, the number of cylinders that you set with VLL software is used to determine the Auto setting. ◦ If the P-VOL has 10,019 or more cylinders, Cylinder is set. ◦ If the volume has less than 10,019 cylinders, Track is set.

• HP P9000, HP StorageWorks P9000 Continuous Access Synchronous User Guide Abstract This guide explains how to use HP StorageWorks XP P9000 Continuous Access Synchronous Software to protect information stored on HP StorageWorks P9000 disk arrays from local disaster by continuously copying local data across Fibre Channel connections to remote HP StorageWorks P9000 disk arrays. Topics include configuring and managing remote copies using Remote Web Console, recovering from a disaster, troubleshooting, and using Continuous Access for data migration and point-in-time replication. The intended audience is a storage system administrator or authorized service

• 4 Sharing Continuous Access Synchronous volumes This chapter helps you plan Continuous Access Synchronous pair volumes when they are shared with non-Continuous Access Synchronous volumes. It discusses the program products that can be used with Continuous Access Synchronous. Volume types that can be shared with Continuous Access Synchronous The following table indicates whether non-Continuous

• HP P9000, RCU Operations list when “MCU&RCU” is selected List field descriptions when MCU&RCU is selected in the Display box are shown below. The fields vary according to the selections you make in the tree: • “When LDKC, a CU group, or CU is selected in tree” (page 96) • “When an MCU or RCU is selected in tree” (page 97) When LDKC, a CU group, or CU is selected in tree The following columns appear in the list area when MCU&RCU is selected in Display, and an LDKC, CU group, or CU is selected in the tree.

• HP P9000, DescriptionItem • Normal indicates no path failure to the RCU. • Failed indicates a failure in all paths to the RCUs. • Warning indicates that a failed path to the RCU exists. • The field is empty when the local CU is an MCU. Status Number of paths (blank when the connected CU is an MCU).Num. of Path When an MCU or RCU is selected in tree The following columns appear in the list area when MCU&RCU is selected in Display, and an MCU or an RCU is selected in the tree. DescriptionItem SSID or pathItem SSID of the paired CU or Path group IDID Path channel type (fibre) between MCU and RCU (blank when the target CU is the MCU)M-R Path Status of t

• HP P9000, This dialog box lets you view status and other information for the selected RCU. Right-click an RCU (MCU&RCU in Display), then select RCU Status. DescriptionItem Paths on this system. • No. The paths are listed in numbered order. • Path Status. The path’s condition. See “Logical path status definitions” (page 58) for definitions. • MCU Port. Port number of the MCU. • RCU Port. Port number of the RCU. List Serial number of the RCU. The LDKC number is displayed in parentheses to the right of the RCU S/N. RCU S/N Controller ID and model name.Controller ID Path group ID entered at RCU registration. Used to identify groups of

• HP P9000, Glossary array group A group of four or eight physical hard disk drives (HDDs) installed in a P9000 or XP disk array and assigned a common RAID level. RAID1 array groups consist of four (2D+2D) or eight HDDs (4D+4D). RAID5 array groups include a parity disk, but also consist of four (3D+1P) or eight HDDs (7D+1P). All RAID6 array groups are made up of eight HDDs (6D+2P). This is also known as a parity group or a RAID group. BC P9000 or XP Business Copy. An HP application that provides volume-level, point-in-time copies in the disk array. bit The basic unit of data in a binary numbering system (binary digit), represented by a 0 or a 1. Eight bits equals one byte. CHA Channel adapter. A device

• HP P9000, Typical components A typical configuration consists of the following elements. Many, but not all, require user set up. • A P9500 system on the local side connected to a host. The system on the remote side, which may be a P9500 system, must be connected to the local array via Fibre Channel data paths. The secondary system may consist of a different models—XP12000 Disk Array/XP10000 Disk Array or of other vendors’ systems. • A host at the local site, connected to the local storage system. It is also highly desirable to have a host at the secondary site connected to the secondary system for use in a disaster recovery. If this is not possible, the local host must be i

• HP P9000, Pairsplit-r dialog box This dialog box lets you split a pair. See “Split pairs” (page 48) for complete information. DescriptionItem Shows the selected volume’s port, GID, LUN (LDKC number, CU number, LDEV number).Volume Where the option is defined that allows write I/O to the S-VOL when the pair is split. Options are Enable and Disable. S-VOL Write Where the option is defined that allows write I/O to the P-VOL when the pair is split. Relates to whether you need to keep the P-VOL online or keep the pair synchronized. Options are S-VOL and P-VOL Failure. Suspend Kind Pairresync dialog box Pairsplit-r dialog box 91

• HP P9000, • The primary system records the updated tracks to the P-VOL that occur after the split as differential data. This data is copied to the S-VOL when the pair is resynchronized. • You can set an option to block updates to the P-VOL while the pair is split. This results in the P-VOL and S-VOL staying synchronized. • Another option is to enable I/O to the S-VOL from a host. The secondary system records the updated tracks as differential data. When the pair is resynchronized, the secondary system sends the differential data to the primary system which merges all differential data to determ

• HP P9000, Glossary..................................................................................................108 Index.......................................................................................................110 6 Contents

• Primary (MCU), secondary (RCU) systems The primary system manages the P-VOL and the following operations: • Host I/O operations to the P-VOL • Initial copy and update copy operations between the P-VOL and S-VOL • Pair status and configuration information The secondary system manages the S-VOL and the following operations: • Remote copy operations issued by the primary

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