Appendix A - Alerts
Failure Events
The following table summarizes the operation of the system in the presence of various failures.
Email refers to an email notification sent by the controller over the Ethernet interface to an assigned email address, SNMP refers to an SNMP trap sent by the controller over the Ethernet interface to a designated SNMP recipient and Event log refers to an event logged in the Alert Log in the Raidtec Manager Management Software.
FAILURE | FAILURE | EFFECT ON | EFFECT ON | EFFECT ON | USER |
CLASS | TYPE | DATA | AVAILABILITY | PERFORMANCE | NOTIFICATION |
Power | Total Loss | Data may be | System unavailable | N/A | Event log |
(BBU Not |
| lost if write |
|
|
|
present) |
| cache is |
|
|
|
|
| enabled |
|
|
|
Power | Transient | Data may be | System unavailable | N/A | Event log |
(BBU Not | Loss | lost if write | during power loss. |
|
|
present) |
| cache is | Controller takes 7 |
|
|
|
| enabled | seconds to reboot and |
|
|
|
|
| 60 seconds for the |
|
|
|
|
| system to become |
|
|
|
|
| available. |
|
|
Power | Total Loss | No effect | System unavailable | N/A | Event log |
(BBU Present) |
| provided |
|
|
|
|
| outage is |
|
|
|
|
| shorter than |
|
|
|
|
| BBU hold time |
|
|
|
Power | Transient | No effect | System unavailable | N/A | Event log |
(BBU Present) | Loss |
| during power loss. |
|
|
|
|
| Controller takes 7 |
|
|
|
|
| seconds to reboot and |
|
|
|
|
| 60 seconds for the |
|
|
|
|
| system to become |
|
|
|
|
| available. |
|
|
Disk | Drive | No effect. | Loss of high | Performance may | Event log, Email |
(RAID Level 1, | removed or | RAID volume | availability. System | drop | and SNMP |
5 or 10) | drive failure | degraded. | will become |
|
|
|
|
| unavailable on |
|
|
|
|
| second failure. |
|
|
Disk | Drive | RAID is | RAID unavailable | N/A | Event log, Email |
(RAID Level 0) | removed or | inaccessible |
|
| and SNMP |
| drive failure |
|
|
|
|
Disk | Advanced | No effect | No effect | Performance will | Event log, Email |
(RAID Level 1, | drive failure |
|
| drop if spare is | and SNMP |
5 or 10) | notice |
|
| available to rebuild |
|
|
|
|
| the failing drive to |
|
Disk | Advanced | No effect | No effect | None | Event log, Email |
(RAID Level 0) | drive failure |
|
|
| and SNMP |
| notice |
|
|
|
|
Disk | Medium | No effect | Stripe will be rebuilt | Performance may | Disk statistics |
(RAID Level 1, | Error |
| on alternate sectors. | drop | updated in |
5 or 10) |
|
|
|
| controller |
|
|
|
|
| If threshold met, |
|
|
|
|
| Event log, Email |
|
|
|
|
| and SNMP |
Raidtec FS3102 Hardware Installation Guide | Version 1.0 | 24 |