Well, using both channels is exactly what MP in MP-HA is about ☺ So rules are correct. You connect A-IN and B-OUT to one head and B-IN and A-OUT to another head. This gives you full redundancy. ... View more

I believe, NetApp will nag you with errors in log as long as at least root aggregate is not mirrored. ... View more

There is no fixed cabling. There are some rules that should be followed, they are described in standard documentation. Otherwise you are free to use anything that agrees with those rules ☺ ... View more

There is little point in having metrocluster without syncmirror; it makes it impossible to take over in case of site outage. For the same reason “syncmirror in a box” it totally pointless. I do not understand what “disk cabin” is. Could you elaborate? ... View more

Same speed rule applies only to target ports. You can have initiator ports of different speed, or mix target and initiator ports of different speed. So if you add 8Gb/s target HBA, you can use on board for shelf connection just fine. ... View more

Could you explain what hotpspot (in reallocate output) actually means and how to intepret it? I do not remember any paper describing it. ... View more

Click link on top of MS KB: View and request hotfix download: http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=937382&kbln=en-us ... View more

Are you using SnapDrive to connect the LUN? ... View more

Drive letter assignment is kept locally in Windows registry on every system. MBR drives are identified by disk signature – unique number that is computed and stored in MBR the very first time disk is initialized by Windows. GPT drives have GUID for every partition that is computed when partition is initialized. ... View more

Turning off "not enough spares" warning is not possible with RAID4. ... View more

142292 is fixed in 6.5.3H1P4 ☺ ... View more

Where does 7.3.5 come from? Three of these bugs should be fixed in version you have and fourth (237378) is not fixed in any (released) version. Looks like you really hit it; even more, looks like everyone doing SFSR should see this bug. I have to check ☺ ... View more

Either NetApp has very peculiar definition of Next Business Day, or it is Best Efforts in disguise. It is not uncommon to receive NBD replacement on 5th day here … even in the region covered by NBD. Regarding 2 spare rule – when disk is taken out of aggregate for probation, it has to be replaced by spare. If you have only one, it means you won’t have any more left. And this is not an error that should trigger replacement – you do not know whether you will need replacement until all tests are finished. So you open a window where you are (more) vulnerable to disk failure. Not something any vendor would do by default. ... View more

It sounds like you configured multi mode VIF on NetApp, in which case you have to configure matching port channel in Cisco. Alternative is to change NetApp configuration to single mode VIF. ... View more

When you pull out head it is immediately powered off (of course). Chassis itself continues running as long as there is second head. I never tried simply pulling out single, non-clustered, head, so I really do not know what happens in this case. ... View more

That’s quite possible. In the past target allocation size was 64K (resulting in 16), then it was increased to 128K (giving 32); I can well believe today it is increased even more. 256K does not sound like unreasonable. Anyone knows counters related to this (i.e. how many full extents were written)? ... View more

To enable interface failover between controllers both of them must have access to the same VLANs. So yes, your setup looks reasonable. ... View more

There is no way to restore backups made by dump as snapshot. You will get full content. When you back up LUN, you get the full LUN back. You won’t need any backing snapshot because LUN won’t be clone anymore. ... View more

You could use SSET (space saving estimation tool) to estimate space savings for real customer data. It is available from filed portal. ... View more

My question was explicitly whether I can reuse the same chassis to add IOXM or not. Answer was - you need different chassis, it is not marketing trick, they are physically different. It is quite possible that the only difference is EEPROM where type is recorded and it is programmed for specific configuration before sending replacement to customer. Of course the guy could just repeat what he was told. In any case as long as this is not officially supported by NetApp it is rather academical question. ... View more

Technically should be no issue. This will. I just had chance to ask NetApp guy about it. A and E versions use physically different chassis which are not interchangeable. Pity ... View more

Folks, you two are probably in the best position to open a bug ☺ This has minor impact for new configuration (except additional couple of hours for zeroing disks); but for existing system it could cost quite a bit time and efforts. ... View more

yes, that's correct. ... View more

Yes, it is physically possible. You need to consult your backup software whether it supports it. It is easy to get corrupted backups this way. ... View more