HP XP10000 Operation & User’s Manual
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HP XP10000, Business Copy XP user guide for the XP10000/XP12000 59 start the paircreate operations. To open the Paircreate window, select one or more SMPL volumes or PSUS pairs in the Volume list on the BC main screen, right-click the selected volumes, and select Paircreate. Figure 34 Paircreate window The Paircreate window consists of the following components: • ”Paircreate Volume List” on page 59 • ”Copy Pace list” on page 60 • ”Select MU list” on page 60 • ”Select S-Vol box” on page 60 • ”Buttons” on page 61 • ”Creating L1 pairs” on page
14 Business Copy XP (BC) for the XP10000/XP12000 BC requirements for XP12000 and XP10000 BC operations provide disk array-internal copies of UNIX/PC server volumes (LUs) on the disk array. The following table describes the operational requirements for BC. Table 3 BC operational requirements for XP12000 and XP10000 Parameter Requirement Pair objects Logical devices (LDEV
HP XP10000, 58 Business Copy XP (BC) for the XP10000/XP12000 Resetting reserve attributes Use the Reset Reserve Attribute window to reset the reserve attribute for the volume selected on the BC main screen. To open the Reset Reserve Attribute window, select one or more reserved SMPL volumes in the Volume list on the BC main screen, right-click, and click Change Reserve. Figure 33 Reset Reserve Attribute window The Reset Reserve Attribute window displays the reserved volumes selected on the BC main screen. Clicking OK resets the reserve attribute for reserved volumes. The settings are displayed in the Preset Volume list on the BC main screen. The Cancel bu
HP XP10000, 28 Business Copy XP (BC) for the XP10000/XP12000 NOTE: When a reverse or quick restore pairresync operation is in progress, you cannot perform paircreate, pairsplit, or pairresync operations for any other pairs sharing the same P-VOL (pairsplit-S and pairsplit-E are allowed). Figure 6 BC P-VOL forming pair with Continuous Access XP S-VOL and external S-VOL, respectively Figure 7 BC P-VOL forming pair with external S-VOL and shared as Continuous Access XP S-VOL Figure 8 BC S-VOL forming pair with external P-VOL and shared as Continuous Access XP P-VOL Figure 9 BC P-VOL forming pair with Continuous Access XP Journal S-
HP XP10000, 64 Business Copy XP (BC) for the XP10000/XP12000 • SvolMode (LUN(S)): CU:LDEV of the S-VOL NOTE: An LDEV number ending with # (for example, 00:01#) indicates the LDEV is an external volume. • Type: Emulation type of the P-VOL and S-VOL • Capacity (MB): Volume capacity displayed in megabytes (MB) • CLPR(P): Cache logical partition of the P-VOL • CLPR(S): Cache logical partition of the S-VOL Window options Copy Pace list Use this list to select the copy pace (Slower, Medium, or Faster) for all
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 41 • External Storage XP. BC operations can be performed with External Storage XP operations to create pairs with the external volumes. Combining BC and Continuous Access XP Journal operations Continuous Access XP Journal volumes can be assigned to BC pairs, and BC volumes can be assigned to Continuous Access XP Journal pairs. BC and Continuous Access XP Journal can function together in the same Local disk array to provide both internal and remote backup for your important data. NOTE: • A primary volume (P-VOL) of Continuous Access XP Journal means a primary data volume of Continuous
HP XP10000, 4 Combining BC with LUN Security XP Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Copying access attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 License capacity of LUN Security XP Extension. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Starting BC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HP XP10000, 24 Business Copy XP (BC) for the XP10000/XP12000 want to finish the copy operation quickly in order to access the S-VOL, take the P-VOL offline before performing the operation. NOTE: Refer to the Table 8 for information about read/write operations from host servers to P-VOLS and S-VOLS of BC pairs during a pairsplit operation. Pairresync operations To change the status of the pairs from PSUS to PAIR, or from PSUE to PAIR, you must resynchronize the pairs. BC can perform the following types of pairres
Business Copy XP user guide for the XP10000/XP12000 43 • Use Continuous Access XP to provide remote backup copies of BC P-VOLs Figure 18 BC and Continuous Access XP: shared P-VOL/P-VOL The configuration shown in Figure 19 is an example of a volume functioning as both a Continuous Access XP S-VOL and BC P-VOL. With this configuration, you can use BC to provide remote copi
30 Business Copy XP (BC) for the XP10000/XP12000 Use the Pairsplit-S window (see ”Deleting BC pairs (Pairsplit-S)” on page 69) to delete BC pairs. When a BC pair is deleted, pending update copy operations for the pair are discarded, and the status of the P-VOL and S-VOL is changed to SMPL. CAUTION: The S-VOL of a duplex pair (PAIR status) may not be identical to its P-VOL du
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 15 Maximum number of pairs for the XP10000/XP12000 When you create BC pairs, resources called differential tables are required. The number of differential tables available in one disk array depends on the array’s amount of shared memory for differential tables. • You can use 13,652 differential tables if no additional shared memory for differential tables is installed. • You can use 30,718 differential tables if additional shared memory for differential tables is in
HP XP10000, 32 Business Copy XP (BC) for the XP10000/XP12000 their second L2 pair. For the S-VOLs associated with each of these pairs, the MU number is once again MU=0 because this is the first pair of which they are a member. Figure 12 Cascade pairs When L1 and L2 cascade pairs are created, the P-VOLs and S-VOLs of the cascade pairs are classified using the following terms (as shown in the previous figure): • The root volume is the P-VOL of the L1 pair, which is the original BC pair. You can add up to three S-VOLs (node volumes) to a root volume. • The node volume is the S-VOL (reserved) of an L1 pair and the P-VOL of an L2 pair. You can add up to two S-VOLs (leaf volum
74 Business Copy XP (BC) for the XP10000/XP12000 0801 The BC feature could not be used. Ensure that the disk array has the correct microcode level for BC, the disk array has BC installed and enabled, and the Command View XP management station or XP Remote Web Console has BC installed and enabled. 080B The request could not be accepted. Retry about one minute later. 0810
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 25 • Normal. This operation (see Figure 4) resynchronizes the S-VOL with the P-VOL. The copy direction for a normal pairresync operation is P-VOL to S-VOL. The pair status during a normal resync operation is COPY(RS), and the P-VOL remains accessible to all hosts for read and write operations during a normal pairresync. • Quick. This operation speeds up the normal pairresync operation without copying the P-VOL data to the S-VOL. The P-VOL and S-VOL
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 83 Calculating differential tables for open-system volume migration When you migrate open-system volumes, use the information in Table 27 to calculate the total number of required differential tables per migration plan. The following table shows the number of control cylinders according to the emulation type. Table 27 Total number of differential tables per migration plan Emulation type Equation OPEN-3 Total number of differential tables per migration plan = (X): Capacity of the volume to be migrated (KB)
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 21 • = 13,652 when additional shared memory for differential tables is not installed. • = 30,718 when additional shared memory for differential tables is installed. For example, if you create 10 pairs of LUSE volumes consisting of three OPEN-3 volumes, use the following equation: . Since 30 is less than 13,652, 10 pairs of LUSE volumes consisting of three OPEN-3 volumes can be created. NOTE: When the emulation type is OPEN-3, and the capacity of the volume is 2,403,360 KB, th
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 23 • If shared memory is lost (for example, offline micro exchange or volatile PS on), the differential bitmap is also lost. In this case, the disk array treats the entire BC P-VOL (S-VOL for COPY(RS) pairs) as difference data and recopies all data to the S-VOL (P-VOL for COPY(RS) pairs) to ensure proper pair resynchronization. For pairs with COPY(SP) or PSUS(SP) status, the disk array changes the status to PSUE due to the loss of the differential bitmap, also ensuring proper resynchronization of these pairs. If shared memory is l
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 71 Viewing BC pair status and history The History pane displays current BC pair status information and BC pair history information for the selected port. To open the History pane, click the History tab on the BC main screen. Figure 39 History pane NOTE: If Snapshot XP is installed, the lower area of the pane lists the operation history of Snapshot XP pairs. For more information, see the HP StorageWorks Snapshot XP user guide. The upper area of the History pane lists the operation history of BC pairs. The
HP XP10000, 80 Maximum pair calculations Calculating the number of pairs you can create If LUSE is not used The maximum number of pairs that can be created is the largest number that meets the equation , where: • Σ (α) is the total number of differential tables (α) required for creating a copy pair. • β is the number of available differential tables (13,652 with no additional shared memory, 30,718 with additional shared memory). For example, if you want to create 20 pairs of OPEN-V volumes, each with 60 GB (62,914,560 KB) of capacity, 5 differential tables are required for each vo
HP XP10000, Business Copy XP user guide for the XP10000/XP12000 31 The Quick Restore pairresync operation on a pair with status of PSUS exchanges data in the pair’s P-VOL and S-VOL. If you use the Swap&Freeze option when performing the Quick Restore pairresync operation, the update copy operation will not take place after the Quick Restore pairresync operation is complete. Therefore, data on the P-VOL and S-VOL is kept exchanged. If you do not use the Swap&Freeze option when performing the Quick Restore pairresync operation, the update copy operation will take place after the Quick Restore pairresync operation is comple
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