topic Re: 380g4 change duplex to simplex in ProLiant Servers (ML,DL,SL)

380g4 change duplex to simplex

Tomasz_15 — Thu, 13 Oct 2005 06:57:13 GMT

Can i change duplex to simplex in dl380g4 , without lose array configuration? array made on 3 disk raid5.

Re: 380g4 change duplex to simplex

Tomasz_15 — Thu, 13 Oct 2005 07:11:43 GMT

i already know the answer-its possible and save.

Re: 380g4 change duplex to simplex

Oleg Koroz — Thu, 13 Oct 2005 07:17:46 GMT

is RAID5 3 drives O/S drives ? or DATA
they was installed Bay 0,1,2 ?

Re: 380g4 change duplex to simplex

Steven Clementi — Thu, 13 Oct 2005 07:32:13 GMT

Usually yes, because as long as the Smart Array can find the 3 drives on the single Bus, it should automatially re-configure the array settings and write the new config to the drives. Or so I would think.

Stveen

Re: 380g4 change duplex to simplex

Tomasz_15 — Thu, 13 Oct 2005 09:25:25 GMT

disks were instaled in bay 0,1,2 (only o/s nothing more), after change from duplex to simplex controler reconfigure array-disk were found at new location.. i didnt even need access orca.

Re: 380g4 change duplex to simplex

Tomasz_15 — Fri, 14 Oct 2005 03:26:00 GMT

Re: 380g4 change duplex to simplex

Oleg Koroz — Fri, 14 Oct 2005 06:22:29 GMT

Array Controller will see them and reconfigure, as Roaming supported, but what benefits you get from ID0, 1 on the channel A and ID2 on the channel B?
I would believe example of RAID 1,1+0 open more for discussion if used as 4 drives between two different channel, but RAID 5 between 2 channels (ID0, 1 +2) More chances for errors: on the Parity, Delay for spin time, Synchronization, Read Write losses, Controller should keep extra cache for second channel and switching function for RAID 5. It's not common configuration, higher % on the DATA loss or Corruption â in case if something goes wrong. Split for duplex and simplex commonly used with ID0, 1 for O/S Mirrored Drives and rest 4 for Data (or 3 DATA and Tape Drive).

What the main point was for you to split, add more drives to B channel? B channel will be shared for two Arrays, performance degradation or more hassle if you decide to add additional controller for duplexed part.