RAID with Hs HDD with different rpm

[darrynliew]

Hi! All,

Will like to have some advise if I could do a RAID 1 with two 18.2GB Hot-swap Hard Disk Drive but with different RPM. 10k and 7.2k rpm.

Look forward for response. Thank you in advance.

 

[paulw]

In theory the Raid controller will not care about the speeds of the drives, you can for example build a raid config with 18gb 10k disks and 36gb 15k disks , the only limiltation is that it will only use 18gb of the 36gb.

 

[darrynliew]

Hi ! Paulw

Thanks for that !

 

[Bernard74]

I do not agree

Since I have been in the industry most RAID controller manufacturers do NOT recommend install different spindle spee drives on the same channel.

Adaptec, LSO Logic...old Mylex....and so on...

I have seen issues with both Mylex old school controllers and new LSI one's when mixing drive speeds.

Regards
Bernard

 

[catorze]

I concur with Bernard. Although it may be theoretically possible, from a planning standpoint (assuming you haven't done this yet), it's a bad idea.

 

[darrynliew]

Hi! Guys,

Thank you for your kind advise.
How I wish to read this earlier. I had tried the installation with different rpm HDDD and it doesn't work.

FYI.