Raid setup
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== How to configure Raid in the BIOS == | == How to configure Raid in the BIOS == | ||
=== Dell R510 === | === Dell R510 === | ||
| + | (More detail on how to interact with the console, ctrl-alt-delete, ctrl chars, etc.: [[Dell#Connecting_to_serial_console]]) | ||
| + | |||
Target configuration for databases (from [[Raid and MegaCli]]): | Target configuration for databases (from [[Raid and MegaCli]]): | ||
* raid-10 | * raid-10 | ||
* 256k stripe | * 256k stripe | ||
| − | |||
* no read ahead | * no read ahead | ||
| + | * writeback cache | ||
To completely nuke the existing raid and start over... | To completely nuke the existing raid and start over... | ||
* follow instructions in [[Build a new server]] to get into the BIOS (powercycle the server, console com2, etc.) | * follow instructions in [[Build a new server]] to get into the BIOS (powercycle the server, console com2, etc.) | ||
* hit CTRL-R when prompted to enter the RAID controller setup (PERC H800 Integrated BIOS Configuration Utility 2.02-0025) | * hit CTRL-R when prompted to enter the RAID controller setup (PERC H800 Integrated BIOS Configuration Utility 2.02-0025) | ||
| + | ** I've had the best luck hitting it several times right about when the HW initialization goes from 0% to 100%. | ||
* delete the existing RAID set | * delete the existing RAID set | ||
** cursor over the Disk Group line, hit F2 | ** cursor over the Disk Group line, hit F2 | ||
| Line 36: | Line 39: | ||
** "Are you sure" choose OK | ** "Are you sure" choose OK | ||
* You should see "Press Ctrl-Alt-Delete to reboot" | * You should see "Press Ctrl-Alt-Delete to reboot" | ||
| − | * | + | * press esc-R esc-r esc-R to reboot |
| − | + | ||
| + | When you're done, ctrl-\ to get out of console, 'exit' to disconnect from the mgmt interface. | ||
Latest revision as of 22:43, 21 September 2011
[edit] How to configure Raid in the BIOS
[edit] Dell R510
(More detail on how to interact with the console, ctrl-alt-delete, ctrl chars, etc.: Dell#Connecting_to_serial_console)
Target configuration for databases (from Raid and MegaCli):
- raid-10
- 256k stripe
- no read ahead
- writeback cache
To completely nuke the existing raid and start over...
- follow instructions in Build a new server to get into the BIOS (powercycle the server, console com2, etc.)
- hit CTRL-R when prompted to enter the RAID controller setup (PERC H800 Integrated BIOS Configuration Utility 2.02-0025)
- I've had the best luck hitting it several times right about when the HW initialization goes from 0% to 100%.
- delete the existing RAID set
- cursor over the Disk Group line, hit F2
- scroll down to 'Delete Disk Group'
- say "Yes" to the "Are you sure?" question. (tab to Yes, hit enter)
- create a new RAID set
- select the 'No Configuration Present' line, hit enter
- set RAID level to 10
- leave PD per Span at 2
- select all Physical Disks (space bar to X each one)
- leave VD Size alone
- set VD Name to 'allr10' or something useful.
- select Advanced Settings
- set Strip Element Size to 256KB
- set Read Policy to No Read Ahead
- set Write Policy to Write Back
- check Initialize
- choose OK
- "Initialization will destroy data on the virtual disk. Are you sure?" choose OK
- "Initialization finished" choose OK
- You should see "Spanned Disk Group: 0, Raid 10"
- You should see a single line under Virtual disks "Virtual Disk: 0, allr10, 11175.00GB" (or whatever size your disks are)
- hit 'esc' to exit
- "Are you sure" choose OK
- You should see "Press Ctrl-Alt-Delete to reboot"
- press esc-R esc-r esc-R to reboot
When you're done, ctrl-\ to get out of console, 'exit' to disconnect from the mgmt interface.
