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IBM EDR1 EXP30 Ultra SSD I/O Drawer

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  • IBM EDR1

 Product Description

IBM EDR1 EXP30 Ultra SSD I/O Drawer

  • 30 SSD disk slots
  • 1U Rackspace
  • Supported on Power7 machines  

The IBM EDR1 is a 1U high I/O drawer providing 30 hot-swap SSD bays and a pair of integrated large write cache, high-performance SAS controllers. Ultra high levels of performance are provided without using any PCIe slots on the POWER7 server in an ultra dense packaging design.This feature is The two high performance, integrated SAS controllers each physically provide 3.1GB write cache. Working as a pair, they provide mirrored write cache data and controller redundancy. The cache contents are designed to be protected by built-in flash memory in case of power failure. If the pairing is broken, write cache is not used after existing cache content is written out to the drive and performance will probably be slowed until the controller pairing is re-established. Each controller is connected to a GX++ PCIe adapter in a server (for example #1914) over a PCIe x8 Cable (example: #EN05 or #EN07 or #EN08). Usually both controllers are attached to one server, but each controller can be assigned to a different server or partition or VIOS. Active/Active capability is supported assuming at least two RAID arrays. The controllers provide RAID 0, RAID 5, RAID 6 and RAID 10 for AIX and Linux and VIOS. AIX/Linux/VIOS also provide OS mirroring (LVM). The adapters' CCIN is 57C3. eMLC SSD designed to fit in the Ultra drawer bays such as the 387GB #ES02 SSD are used. A minimum of six SSDs are required in each Ultra drawer. Each controller can access all 30 SSD bays. The bays can be configured as one set of bays run by a pair of controllers working together. Or the bays can be divided into two logical sets where each of the two controllers "own" one of the logical sets. With proper software if one of the controllers fails, the other controller can run both sets of bays

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