For MOST of the block vs. zoned checksum disks, the rule is:
You can use the block checksum disks(520) in either type of volume, but
cannot only use a zone checksum disk (512) in a volume with zoned checksums.
However, due to a error a long time ago, the 36GB variety of those disks were not properly sized so for the 36GB disks, they cannot be mixed at all.
I suppose, as long as your filer is not under support, you could try to reformat the disks, but you still may struggle with getting ONTAP to accept them. I've never tried to make it happen, but I can't say it's impossible. And, of course, never do this on a system that has a valid support contract.
-- Adam Fox adamfox@netapp.com
-----Original Message----- From: owner-dl-toasters@jhereg.corp.netapp.com [mailto:owner-dl-toasters@jhereg.corp.netapp.com] On Behalf Of Ronan Mullally Sent: Wednesday, March 14, 2007 4:14 PM To: toasters@mathworks.com Subject: Block vs Zoned checksum disks
Hi,
I've got an old lab filer with a shelf of X231 disks. I've got my hands on a couple of extra 36GB disks to act as spares, but it turns out they're X225s rather than X231s - ie a 512 byte sector size rather than a 520 byte sector size.
The /etc/qual_devices file lists the following:
D NETAPP X225_ST336704FC NA42 512 D NETAPP X231_ST336704FC NA42 520
The two disks are obviously identical seagate drives, but AFAIR (I could be wrong, it's been a long day) I can't use a 512 byte drive in a volume of 520 byte drives. Is this correct?
If so, is there any way around this? I can re-format the drives with a 520 byte sector size - and add an X225 line with a 520 byte sector size, would that do the trick? If not, is there any way of changing the disk label from X225 to X231?
Thanks in advance,
-Ronan