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Bull ESCALA Power7 Series Manual

Sas subsystem
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SAS subsystem for the M6-700, M6-705,
M6-715, M7-700, M7-705 or M7-715
REFERENCE
86 A1 04FG 05

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  • Page 1 SAS subsystem for the M6-700, M6-705, M6-715, M7-700, M7-705 or M7-715 REFERENCE 86 A1 04FG 05...
  • Page 3 ESCALA Models Reference The ESCALA Power7 publications concern the following models: Bull Escala E1-700 / E3-700 (31E/2B ,8231-E2B) Bull Escala E1-705 (31E/1C, 8231-E1C) Bull Escala E1-715 (31E/1D, 8231-E1D) Bull Escala E3-705 (31E/2C, 8231-E2C) Bull Escala E3-715 (31E/2D, 8231-E2D) Bull Escala E2-700 / E2-700T...
  • Page 4 Quoting of brand and product names is for information purposes only and does not represent trademark misuse. The information in this document is subject to change without notice. Bull will not be liable for errors contained herein, or for incidental or consequential damages in connection with the use of this material.

  • Page 5: Table Of Contents

    Contents Safety notices ....... . . v SAS subsystem for the 17M/MB, 17M/MC, 17M/MD, 79M/HB, 79M/HC, or 79M/HD ..1 SAS architecture .
  • Page 6 SAS subsystem for the 17M/MB, 17M/MC, 17M/MD, 79M/HB, 79M/HC, or 79M/HD...

  • Page 7: Safety Notices

    Safety notices Safety notices may be printed throughout this guide: v DANGER notices call attention to a situation that is potentially lethal or extremely hazardous to people. v CAUTION notices call attention to a situation that is potentially hazardous to people because of some existing condition.
  • Page 8 DANGER When working on or around the system, observe the following precautions: Electrical voltage and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard: v Connect power to this unit only with the provided power cord. Do not use the provided power cord for any other product.
  • Page 9 Observe the following precautions when working on or around your IT rack system: v Heavy equipment–personal injury or equipment damage might result if mishandled. v Always lower the leveling pads on the rack cabinet. v Always install stabilizer brackets on the rack cabinet. v To avoid hazardous conditions due to uneven mechanical loading, always install the heaviest devices in the bottom of the rack cabinet.
  • Page 10 CAUTION: Removing components from the upper positions in the rack cabinet improves rack stability during relocation. Follow these general guidelines whenever you relocate a populated rack cabinet within a room or building: v Reduce the weight of the rack cabinet by removing equipment starting at the top of the rack cabinet.
  • Page 11 (L003) All lasers are certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for class 1 laser products. Outside the U.S., they are certified to be in compliance with IEC 60825 as a class 1 laser product.
  • Page 12 CAUTION: Data processing environments can contain equipment transmitting on system links with laser modules that operate at greater than Class 1 power levels. For this reason, never look into the end of an optical fiber cable or open receptacle. (C027) CAUTION: This product contains a Class 1M laser.

  • Page 13: Sas Subsystem For The 17M/Mb, 17M/Mc, 17M/Md, 79M/Hb, 79M/Hc, Or 79M/Hd

    SAS subsystem for the 17M/MB, 17M/MC, 17M/MD, 79M/HB, 79M/HC, or 79M/HD Review the SAS subsystem features, configurations, and limitations for the 7/70 (17M/MB, 17M/MC, or 17M/MD) and the 7/80 (79M/HB, 79M/HC, or 79M/HD) system. SAS architecture Serial-attached SCSI (SAS) architecture describes a serial device interconnection and transportation protocol that defines the rules for information exchange between devices.
  • Page 14 Figure 1. SAS subsystem overview Table 1. SAS subsystem parts Physical Diagram Customer card identification location location Part name Feature code (FC) numbers (CCINs) codes 175 MB Cache RAID – 5662 Card CCIN 2BC2 P2-C9-C1 Dual IOA enablement Note: If FC 5662 is installed, the card embedded SAS adapters report CCIN 57CF and operate as dual...
  • Page 15 Table 1. SAS subsystem parts (continued) Physical Diagram Customer card identification location location Part name Feature code (FC) numbers (CCINs) codes Optional internal SAS 1815 or 1819 P2-T2 cables: Notes: v Three-way split disk or v 1815 when FC 5662 is media backplane not installed configuration (cable FC...

  • Page 16: Sas Storage Configurations

    – Disks formatted to 528 bytes per sector, providing cyclical redundancy checking (CRC) and logically bad block checking – Optimized hardware for RAID 5 and 6 sequential write workloads – Optimized skip read/write disk support for transaction workloads 175 MB cache RAID – Dual IOA enablement card This feature is used to enable write cache on the two embedded SAS RAID adapters of the disk or media backplane by providing the necessary rechargeable batteries for memory backup.

  • Page 17: Sas Subsystem Configuration That Uses A Two-Way Split Backplane

    Table 2. SAS subsystem configurations (continued) 175 MB Cache RAID - Dual subsystem enablement External SAS configuration card (FC 5662) components SAS port cables SAS cables Limitations Dual storage None None Not applicable v Internal cable (FC Note: The 1815) cannot be configuration internal dual used with the...

  • Page 18: Sas Subsystem Configuration That Uses A Three-Way Split Backplane

    v Each SAS adapter can recognize only three of the disk drives and cannot function in dual storage I/O adapter (IOA) or high availability (HA) RAID mode. One SAS adapter connects to D1, D2, and D3. The other SAS adapter connects to D4, D5, and D6. v The SAS adapters can be assigned to separate partitions for boot devices.
  • Page 19 v A three-way split backplane uses three sets of two drives and cannot function in dual storage I/O adapter (IOA) or high availability (HA) RAID mode. One SAS adapter connects to D1 and D4. The other SAS adapter connects to D2 and D5. An external SAS adapter connects to D3 and D6. v The SAS adapters can be assigned to separate partitions for boot devices.

  • Page 20: Sas Subsystem Configuration That Uses A Dual Storage Ioa With Internal Drives

    Figure 4. Physical connection to internal SAS adapter The following table lists the details of the three-way split backplane configuration. Table 4. Configuration details Embedded SAS adapter Configuration details Embedded SAS adapter A v The SAS adapter connects to disk drive D1 and D4. v The SAS adapter reports CCIN 57C7.

  • Page 21: Sas Subsystem Configuration That Uses A Dual Storage Ioa With External Drives

    v No separate SAS cables are required to connect the two embedded SAS RAID adapters to each other. The connection is contained within the backplane. v RAID 0, 10, 5, and 6 support up to six drives. v Solid-state drives (SSDs) and hard disk drives (HDDs) can be used, but they can never be mixed in the same disk enclosure.
  • Page 22 v The two SAS adapters with write cache can connect to each other, connect to the six internal disk drives, and connect to the 12 disk drives in an external disk drive enclosure by using the dual IOA enablement card and the external SAS port. v Only hard disk drives (HDDs) are supported in this configuration.
  • Page 23 Figure 7. Physical connection to attach external disk enclosures The following table lists the configuration details. Table 6. Configuration details Embedded SAS adapters Configuration details Two embedded SAS adapters v RAID mode is required for this configuration. v SAS adapters connect to all six disk drives and to any drives that are attached by the external cable.

  • Page 24: Sas Subsystem Service Considerations

    Related concepts: “SAS subsystem service considerations” There are several considerations to review before servicing features within the SAS subsystem for the 17M/MB, 17M/MC, 17M/MD, 79M/HB, 79M/HC, or 79M/HD system. “Service considerations for the 175 MB cache RAID - dual IOA enablement card” on page 13 To prevent data loss, follow proper procedures before replacing the 175 MB cache RAID –...

  • Page 25: Service Considerations For The 175 Mb Cache Raid - Dual Ioa Enablement Card

    Figure 8. Disk bays controlled by each embedded SAS adapter in a two-way split backplane Review the SAS subsystem configuration that uses a three-way split backplane example. If you add the optional internal SAS cable for a three-way split backplane (FC 1815), the disk bay configuration changes. The six disk bays are split into three groups of two.

  • Page 26: Service Considerations For The Cache Battery Pack

    following figure, the highlighted disk bays represent the disk bays that are controlled by each embedded storage adapter (D1- D3 and D4 - D6). Figure 10. Disk bays controlled by each embedded SAS adapter in a two-way split backplane Review the SAS subsystem configuration that uses a dual storage IOA with internal drives example. If you add the optional 175 MB Cache Raid –...

  • Page 27: Problem Determination And Recovery

    The 175 MB cache Raid – dual IOA enablement card (FC 5662) contains two rechargeable battery packs and battery charger circuitry. Each battery pack provides power for the write cache of an embedded SAS storage adapter. When you replace a failing cache battery pack, be sure to replace the correct battery pack.
  • Page 28 SAS subsystem for the 17M/MB, 17M/MC, 17M/MD, 79M/HB, 79M/HC, or 79M/HD...

  • Page 29: Notices

    Notices This information was developed for products and services offered in the U.S.A. The manufacturer may not offer the products, services, or features discussed in this document in other countries. Consult the manufacturer's representative for information on the products and services currently available in your area.

  • Page 30: Trademarks

    This information is for planning purposes only. The information herein is subject to change before the products described become available. This information contains examples of data and reports used in daily business operations. To illustrate them as completely as possible, the examples include the names of individuals, companies, brands, and products.
  • Page 31 equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense. Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits.
  • Page 32 Japanese Electronics and Information Technology Industries Association (JEITA) Confirmed Harmonics Guideline (products less than or equal to 20 A per phase) Japanese Electronics and Information Technology Industries Association (JEITA) Confirmed Harmonics Guideline with Modifications (products greater than 20 A per phase) Electromagnetic Interference (EMI) Statement - People's Republic of China Declaration: This is a Class A product.
  • Page 33 Electromagnetic Interference (EMI) Statement - Korea Germany Compliance Statement Deutschsprachiger EU Hinweis: Hinweis für Geräte der Klasse A EU-Richtlinie zur Elektromagnetischen Verträglichkeit Dieses Produkt entspricht den Schutzanforderungen der EU-Richtlinie 2004/108/EG zur Angleichung der Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-Mitgliedsstaaten und hält die Grenzwerte der EN 55022 Klasse A ein.

  • Page 34: Class B Notices

    Generelle Informationen: Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Klasse A. Electromagnetic Interference (EMI) Statement - Russia Class B Notices The following Class B statements apply to features designated as electromagnetic compatibility (EMC) Class B in the feature installation information. Federal Communications Commission (FCC) statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
  • Page 35 European Community Compliance Statement This product is in conformity with the protection requirements of EU Council Directive 2004/108/EC on the approximation of the laws of the Member States relating to electromagnetic compatibility. IBM cannot accept responsibility for any failure to satisfy the protection requirements resulting from a non-recommended modification of the product, including the fitting of non-IBM option cards.

  • Page 36: Terms And Conditions

    Germany Compliance Statement Deutschsprachiger EU Hinweis: Hinweis für Geräte der Klasse B EU-Richtlinie zur Elektromagnetischen Verträglichkeit Dieses Produkt entspricht den Schutzanforderungen der EU-Richtlinie 2004/108/EG zur Angleichung der Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-Mitgliedsstaaten und hält die Grenzwerte der EN 55022 Klasse B ein. Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu betreiben.
  • Page 37 these publications, or reproduce, distribute or display these publications or any portion thereof outside your enterprise, without the express consent of the manufacturer. Rights: Except as expressly granted in this permission, no other permissions, licenses or rights are granted, either express or implied, to the Publications or any information, data, software or other intellectual property contained therein.
  • Page 38 SAS subsystem for the 17M/MB, 17M/MC, 17M/MD, 79M/HB, 79M/HC, or 79M/HD...
  • Page 40 Printed in USA...

This manual is also suitable for:

Escala power7 m6-700Escala power7 m6-705Escala power7 m6-715Escala power7 m7-700Escala power7 m7-705Escala power7 m7-715

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