| General questions |
| Q1. |
The Single Channel Ultra 320 SCSI HBA is qualified on which ProLiant servers? |
| A1. |
It is qualified on the ML110 G1, ML150 G1, ML150 G2, ML350 G4, ML370 G4, DL360 G4, DL380 G4, DL140 G2, and the DL145 G1. |
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| Q2. |
What is the HBA ideal for? |
| A2. |
The HBA offers customers an ideal solution for attaching tape drives on the supported servers. It also allows The DL145 servers to be upgraded to support NHP SCSI HDD. |
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| Q3. |
What tape drives are supported on the Single Channel Ultra 320 SCSI HBA? |
| A3. |
The DAT24i, DAT 40i and DAT72i are supported on the controller. |
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| Technical questions - cache/memory |
| Q1. |
Is Drive Write Cache available on HP SATA drives? |
| A1. |
Yes, however HP ships SATA drives with Drive Write Cache (DWC) disabled. The preset configuration was selected to provide greater safety for our customer's drive data in case of sudden power loss, when there is no battery on the controller to protect the cache.
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| Q2. |
Can Drive Write Cache be enabled on the controller and SATA drives? |
| A2. |
Yes, please see the attached presentation for the latest servers and controllers that allow for Drive Write Cache to be enabled.
WARNING: Enabling DWC may result in loss of data if power is lost to the server and there is no power protection configured for the server. When Drive Write Cache is configured, the following best practices should be used to protect the data in case of power loss: Install a redundant power supply in the server (if available for that server). If redundant power supplies are used and one power supply fails, temporarily disable Drive Write Cache until a replacement power supply has been installed. If redundant power supplies are used, add an additional layer of power protection by connecting each power supply in the server to a separate Uninterruptible Power Supply (UPS). If multiple UPSs are used, add an additional layer of power protection by connecting each UPS to a different AC circuit.
How to Enable Write Cache on SATA HDDs for HP ProLiant ML100 series and ML310DL320 Servers DWC
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