8203 5679: SAS RAID Enablement with 175 MB write cache
5679 is IBM's SAS RAID Enablement with 175 MB write cache. Listed for 8203-E4A, 8204-E8A, 9408-M25 and more.
Two small cards that add RAID and a protected 175 MB write cache to the built-in SAS disk controller, with no PCI slot used.
5679 at a glance
| Detail | Value |
|---|---|
| Feature code | 5679 |
| Name | SAS RAID Enablement with 175 MB write cache |
| Part type | Storage controller and drive bays |
| Write cache | 175 MB, mirrored on an auxiliary card with battery |
| RAID | RAID 0, 5, 6 and 10 (RAID-5 needs three drives, RAID-6 needs four) |
| Slot | dedicated internal slots, no PCI slot |
| Battery | hot-pluggable |
| Listed for these Power 6 machine types | 8203-E4A, 8204-E8A, 9408-M25, 9409-M50 |
| Runs with IBM i | Yes ... Cache backup works whether RAID or IBM i mirroring is used. |
With the #8310 or #8346 backplane it also drives one external #5886 EXP 12S drawer, for up to 18 SAS disks on the embedded controller. REDP-5052 says the two-core 9408-M25 and the 9409-M50 can use it with backplane #8345 for the external port and that the one-core 9407-M15 does not support that attachment; the sources checked do not say whether the M15 takes the card itself.
Before you order 5679
The drive bay and controller setup decides how many drives the server can hold and how they are protected. Changing it usually means planning downtime, so check it against your machine type first.
Not sure which Power 6 you have? The Identify Your Power6 page shows how to check. Collecting several parts for one quote? Use the Power 6 maintenance and sourcing vendor directory. Or look up another feature code.
Source: REDP-4403 section 1.3 and Figure 1-5; REDP-4404 section 2 (Figure 2-9); REDP-5052 #5679 feature description. Always confirm against your server's own configuration before you order.
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