The controller chassis contains the following components:
- Controller boards (CTLs, also called DKCs.)
- Front-end modules (FEMs), also called channel boards (CHBs)
- Power supply (PS)Note: The PSUT power supply has a Titanium efficiency rating.
- Backup fan module (BKMF)
The CTLs contain the cache memory (CM) and cache flash memory (CFM) for the storage system. The VSP E590 and VSP E790 support up to 768 GiB of cache memory.
| Number | Item | Description |
|---|---|---|
| 1 | LED (POWER, READY, WARNING, ALARM) | Status LEDs for the controller chassis. |
| 2 | POWER ON/OFF (main switch) |
Switch that controls power to the storage system. |
| 3 | Lock | Use to lock and unlock front bezel. |
| Number | Item | Description |
|---|---|---|
| 1 | POWER LED | Green: Storage system is powered on. Amber: Storage system is receiving power. |
| 2 | READY LED | Green: Normal operation. |
| 3 | WARNING LED | Off: Normal operation. Amber: Component requires maintenance. Blink: Failure requires maintenance. Note: When system option mode (SOM) 1097 is set to ON, the WARNING LED does not blink, even if the following failure service information messages (SIMs) are issued: 452xxx, 462xxx, 3077xx, 4100xx, and 410100. LED might turn off during user maintenance. |
| 4 | ALARM LED | Off: Normal operation. Red: Processor failure (system might be down). For assistance, contact customer support: https://support.hitachivantara.com/en_us/contact-us.html. |
| Number | Item | Description |
|---|---|---|
| 1 | LED (POWER, READY, WARNING, ALARM) | Status LEDs for the controller chassis. |
| 2 | ALM LED | Red: Drives can be replaced. |
| 3 | ACT LED | Green: Normal operation. Green Blinking: The drive is being accessed. |
| 4 | Drives | Disk drives |
| Number | Item | Description |
|---|---|---|
| 1 | Power supply unit | Supplies electric power to the controller components. |
| 2 | Controllers | Controller 1 (bottom) and Controller 2 (Top) |
| Number | Item | Description |
|---|---|---|
| 1 | RDY LED | On: Normal Operation |
| 2 | MAINT LED | On: Power supply unit can be replaced. |