User manual HP hsg array controller annexe 1

[. . . ] Compaq StorageWorks UltraSCSI RAID Enclosure (DS­BA370 Series) User's Guide Part Number: EK­BA370­UG. C02/387403­001 September 1998 The DS­BA370 series UltraSCSI RAID rack-mountable enclosure is the basic building block of UltraSCSI RAID subsystems. This guide and its related publications comprise the basic documentation set for these subsystems. Compaq Computer Corporation Houston, Texas September 1998 While Compaq Computer Corporation believes the information included in this publication is correct as of the date of publication, it is subject to change without notice. Compaq makes no representations that the interconnection of its products in the manner described in this document will not infringe on existing or future patent rights, nor do the descriptions contained in this document imply the granting of licenses to make, use, or sell equipment or software in accordance with the description. [. . . ] 3 -- Used for a second expansion enclosure. Caution To preclude SCSI bus addressing conflicts, Compaq array controllers do not support enclosure address settings of 1, 4, 5, 6, or 7. Figure 4­6 Expansion Enclosure Address 2: Shelf and SCSI Bus IDs 1 Figure CALLOUT 5 6 1 2 3 4 1. SCSI bus 11 2 CXO-4842A-MC 10 9 8 CXO5776B UltraSCSI RAID Enclosure 4­9 Power Verification and Addressing Figure 4­7 Expansion Enclosure Address 3: Shelf and SCSI Bus IDs 1 Figure CALLOUT 5 6 1 2 3 4 1. SCSI bus 15 3 CXO-4843A-MC 14 13 12 CXO5777B Implementing the Standby Power Mode A major function of the PVA is implementing the standby power mode. This mode removes dc power from all enclosure components, except for the EMU alarm control switch. In standby power mode, the EMU alarm control switch now functions as a dc power switch when pressed. Complete the procedure in Table 4­4 to place the subsystem into standby power mode. Complete the procedure in Table 4­5 to restore dc power to each enclosure. Caution Some array controllers bypass the standby power mode functionality from the PVA standby power switch. Refer to the array controller documentation for availability of this feature. 4­10 UltraSCSI RAID Enclosure Power Verification and Addressing Table 4­4 1. 2. Turning Off the DC Power Distribution Clear the cache module and shut down the array controller per the array controller documentation. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 3. Press and hold the PVA standby power switch (CALLOUT 1 in step 2) on the master enclosure until the EMU initiates a power shut down on the master enclosure. Note The EMU alarm control switch (CALLOUT 1 shown below) on each enclosure now functions as the dc power switch. 1 2 3 4 CXO6302A UltraSCSI RAID Enclosure 4­11 Power Verification and Addressing Table 4­5 1. 2. Turning On the DC Power Distribution If there are no expansion enclosures, go to step 3. If there are expansion enclosures, momentarily press the EMU alarm control switch (CALLOUT 1) on each expansion enclosure. 1 2 3 4 CXO6302A 3. 4. Momentarily press the EMU alarm control switch (CALLOUT 1) on the master enclosure. Verify that the array controller restores the subsystem to an operational state. Replacing a PVA Complete the procedures in Table 4­6 to remove a PVA. Complete the procedures in Table 4­7 to install a PVA. Table 4­6 1. Removing a PVA Clear the cache module and shut down the controller per array controller documentation. 4­12 UltraSCSI RAID Enclosure Power Verification and Addressing Table 4­6 2. Removing a PVA (Continued) If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 3. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. Turn OFF all the ac input boxes by pressing O on each ac power switch (CALLOUT 1) on any expansion enclosure and then the master enclosure. 4. 1 1 0 2 CXO5488B UltraSCSI RAID Enclosure 4­13 Power Verification and Addressing Table 4­6 5. Removing a PVA (Continued) Note the enclosure address setting (0, 2, or 3) on the PVA SCSI ID switch (CALLOUT 3). 1 2 3 CXO5821A 6. Pull both extractor latches outward and remove the PVA. Table 4­7 1. Installing a PVA Verify that the PVA being installed is a model DS­BA35X­EC. CXO-5737A 2. Align the PVA (CALLOUT 2) with the top, right-hand slot and insert it. 2 CXO5754B 4­14 UltraSCSI RAID Enclosure Power Verification and Addressing Table 4­7 3. Installing a PVA (Continued) Pull the PVA extractor latches outward. Push the PVA into the slot until the extractor latches engage the enclosure, then push the extractor latches inward to seat and secure the PVA. Ensure that the PVA SCSI ID switch is set to the valid number for the enclosure: · · · Master enclosure -- 0 First expansion enclosure -- 2 Second expansion enclosure -- 3 4. 5. If there are no expansion enclosures, go to step 6. If there are expansion enclosures, turn ON all the ac input boxes for each expansion enclosure by pressing I on each ac power switch (CALLOUT 1). 1 1 0 6. Turn ON all the ac input boxes for the master enclosure by pressing I on each ac power switch (CALLOUT 1). 2 CXO5488B 7. After the array controller is operational, verify that the subsystem is functioning properly. UltraSCSI RAID Enclosure 4­15 5 Single-Ended I/O Module The single-ended I/O module (see Figure 5­1) performs two functions: · · Provides termination for both the internal and external SCSI buses Establishes SCSI bus communications between enclosures Figure 5­1 Single-Ended I/O Module CXO5816A Caution I/O modules provide termination for both the internal and external SCSI buses. [. . . ] terminators The interconnect components that form the ends of the transmission lines in bus segments. A SCSI domain must have at least one segment and therefore at least two terminators. The terminators ensure that inactive SCSI bus signals are in a known state. There are two basic types of terminators--active and passive: · · Single-ended bus segments use active, linear terminators Differential bus segments use passive (linear totem pole) terminators except for special cases where the electrical transmission lines are very short and only one termination or pull-up is required. terminator connector Any connector physically part of a terminator. [. . . ]