Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations strongm on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

V890 Disk Speed question

Status
Not open for further replies.

nyck

Technical User
Mar 10, 2004
447
GB
I have a V890 which currently has 6 X 73GB 10Krpm disks installed. I'm in the process of looking to purchase an expansion kit and the quotes I have is for 6 X 146GB 15Krpm. Now is there going to be an issue if I add these disks into our V890?

The current file systems are meta devices and I would be looking to expand these onto the new 146GB disk, is this ok?

Or is it better to create seperate new file systems on the 146GB disks?
 


I'm assuming you mean you want to grow concatinated metadevices?

Although it will work,you really don't want to expand across different speed disks. If you integrate the 15k with the 10k drives, the overall speed of the 15k will closing resemble the 10k since the 15k will have to maintain the same average working speed. 15k's are basically backwards compatible. The reason for buying 15k drives is performance, if you do it, you basically defeated your purpose because performance will be affected.

I would suggest separating them out, depending what your file systems are setup for on your server, you may be able to allocate the 15k to high i/o, transactional data, (databases), and maybe the 10k to logs..etc.


 
The plan was to create seperate file systems with the 15K ones and create databases on those. What i will probably do is clone the databases from the 10K's to the 15K's and use the freeded up space on the 10K's as a dumping area for oracle backups.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top