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| The PRIMERGY SX940 S1 Direct Attached Storage Blade Disk can be used to extend the internal storage capacity of PRIMERGY BX92x Server Blades. |  |
A maximum of four internal disk drives greatly extends the maximum amount of disk storage of a Server Blade. One Storage Blade occupies a Blade slot within the PRIMERGY BX900 S1 system unit; it is positioned either on the left or right to an adjacent BX92x Server Blade, or between the two. The 1x 4 or 2x 2 disk drives of one SX940 S1 are driven by 1 or 2 integrated, highly functional SAS/RAID controllers with 512 Mbyte cache and BBU. Each controller provides RAID levels 0, 1, 5 and 6.
The connection to each Server Blade is realized via a midplane link to the high performing PCIe x4 interfaces of each Server Blade’s system board. |
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| Feature | Benefit |
| PRIMERGY SX940 S1 provides up to 4 additional disk drives for one or two Server Blades; up to six Storage Blades Disk usable per system unit. | Variability through the optional choice of either connecting 2x up to 2 drives to two different, adjacent Server Blades,
or to connect up to 4 disk drives to one adjacent Server Blade. |
| Mid-plane connection via PCIe x4 interface. | Avoidance of additional cabling due to the direct connection to Server Blade(s) via the high performance midplane, no
need for additional disk controller slots in Server Blade(s). |
| SAS hard disk drives. | High capacity of up to 584 GB with high quality SAS HDDs. |
High performance RAID controller (1x or 2x) within the Storage Blade, providing RAID levels 0, 1, 5 and 6, accelerated
by 512 MB cache module and secured by iBBU | The write-back cache comprehensively enhances the speed of write operations and in the event of power failures,
the integrated Battery Backup Unit guarantees data integrity. |
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