Raid-S on Symm 8830 with 72GB HD

[villavic]

I have an 8830 dedicated to R2 volumes (SRDF mirrored volumes). I need more space but don't want to buy more hard disks, so I asked EMC to reformat the box from Raid 0+1 to Raid-S

However EMC says Raid-S is not longer convenient, since 72GB hard disks are to big for this raid. And the rebuild time when replacing a disk is so long that it can affect the availability.

Is it true? Does anyone has experience of raid-s with 72GB hard disk? (on symmetrix).

 

[comtec17]

Stay as far, far away from RAID-S as possible. We actually say here that the "S" stands for sh**. The performance is terrible. For example, I had to restore a SQL Database that is 1TB in size, it took SQL 36hours just to allocate the space before we could even start the restore. Once we switched it to RAID 0+1, it only took 5 hours.