The rule is: There are no rules.
anthonyv 2000004B9K Comments (3) Visits (4357)
If your considering a midrange storage solution, there are many choices and many vendors.
I often get asked: Why IBM? What makes your solution special?
So when considering Storwize V7000, consider this:
The 24 disk Storwize V7000 enclosure currently offers four different disk types:
Thats four choices and 24 slots per enclosure. But the questions are:
The answer is: There are no rules.
You can order drives in any quantity you like and you can mix drives in an enclosure in any order you like.
So this is a very flexible set of choices.
Now there are rules on RAID arrays, but these are equally flexible.
For instance a RAID10 array can be anywhere from 2 disks (with is practically RAID1) to 16 disks.
RAID5 arrays can use anywhere from 3 to 16 drives, RAID6 uses 5 to 16 drives.
So when making that evaluation, ask our competitors: What are your rules when ordering disks? How restrictive are you?
The Storwize V7000 answer is: There are no rules.