QuickSpecs
HP 3PAR StoreServ 7000 Storage
Configuration Information
Step 3 - Choose Drive Enclosures
Add drive enclosures to expand the configuration and to add large form factor drives to the configuration. Drive enclosures can be ordered separately for installation in the field, or they can be factory configured in a rack. Drive enclosures are optional. Because the Storage Base products and the Upgrade Node Pair include small form factor drive bays, the minimum configuration does not require any additional drive enclosures. For larger configurations, attach drive enclosures. Each drive enclosure includes 24 drive bays. The HP 3PAR StoreServ 7200 supports up to five (5) added drive enclosures. The HP 3PAR StoreServ 7400 supports up to nine (9) added drive enclosures per node pair. The two drive enclosure types can be intermixed in a single array.
HP M6710 2.5 inch 2U SAS Drive Enclosure | HP M6720 3.5 inch 4U SAS Drive Enclosure |
Drive Enclosures
HP M6710 2.5 inch 2U SAS Drive Enclosure | QR490A | |
HP M6720 3.5 inch 4U SAS Drive Enclosure | QR491A | |
Each drive enclosure includes 24 drive bays, (2) IO modules, (2) 1m SAS cables, |
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(1) mounting rail kit, and power cables. |
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The M6710 2U drive enclosure provides 24 SFF drive bays arranged in a single |
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row. |
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The M6720 4U drive enclosure provides 24 LFF drive bays, arranged in four (4) |
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columns of six (6) slots each. |
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Minimum of zero (0) drive enclosures, maximum of five (5) attached to QR482A. |
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Minimum of zero (0) drive enclosures, maximum of nine (9) attached to QR483A. |
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Minimum of zero (0) drive enclosures, maximum of (18) attached to QR485A. |
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Drive enclosures are connected in daisy chains from the SAS ports of the |
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controller nodes. |
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The best practice is to balance the drive enclosures across the SAS ports, |
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remembering that the controller node enclosures include (24) drives attached to |
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the SAS port labeled |
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The best practice when including LFF and SFF drive enclosures in the same array |
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is to arrange them in the rack so that all of the 2U enclosures that belong to one |
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node pair are together and all of the 4U enclosures for that node pair are |
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together. When connecting the backend SAS cables, intermix the M6710 and |
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M6720 enclosures on each SAS port. |
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With a four node configuration, the best practice is to attach the same number of |
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drive enclosures to each node pair. |
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To achieve highest availability in |
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minimum of two (2) enclosures per node pair for RAID 1, a minimum of four (4) |
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enclosures per node pair if RAID 5 is included, and a minimum of three (3) |
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enclosures per node pair if RAID 6 is included. Include enclosures containing node |
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pairs in the count with the M6710 enclosures. |
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Drive bays that are not filled with a drive must be covered with a drive blank to |
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preserve proper air flow. |
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If future capacity upgrades are expected, include enough Drive Enclosures so |
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that there are some empty bays in each enclosure after all drives are added. |
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DA - 14433 North America — Version 17 — December 10, 2013 | Page 13 | |