Hi all,

I've a strange issue on a filer deeply used in FC SAN (3160 with DoT 7.3.2P6 -> it will be upgraded but for now is impossible). On a W2K8 server running Exchange 2010 a mailbox store is hosted on a LUN with this characteristics. The LUN has been created with Snapdrive.

Volume

/vol/excmbs2FAB01Data/ 155GB 100GB 54GB 65% /vol/excmbs2FAB01Data/ /vol/excmbs2FAB01Data/.snapshot 0KB 2110MB 0KB ---% /vol/excmbs2FAB01Data/.snapshot

Vol options are Nosnap on Snap reserve/sched 0 Volume reservation "volume" Fractional reserve 0 Autosize on Volume autosize is currently ON for volume 'excmbs2FAB01Data'. The volume is set to grow to a maximum of 240 GB, in increments of 10 GB. Snap autodelete on Asis is on with a 20% space saved

And the LUN

/vol/excmbs2FAB01Data/excmbs2FAB01Data 150.0g (161067432960) (r/w, online, mapped) Comment: " " Serial#: W-PqRo/BiR8t Share: none Space Reservation: disabled Multiprotocol Type: windows_2008 Maps: viaRPC.21:00:00:24:ff:04:15:94.SRSEDEEXCMBS2=2 viaRPC.21:00:00:24:ff:04:15:91.SRSEDEEXCMBS2=2

The only snap in the volume comes from a Snapmirror relationship and it takes roughly 2 GB

Volume excmbs2FAB01Data working...

%/used %/total date name ---------- ---------- ------------ -------- 2% ( 2%) 1% ( 1%) Mar 23 15:03 netapp2040fab1(0135099451)_excmbs2FAB01Data.2 (snapmirror)

As you can see the LUN is written by host for only 100 GB but sometimes it happens that the autogrow starts and on the console this messages are logged:

Thu Mar 24 16:01:39 CET [netappfa1: wafl.vol.autoSize.done:info]: Automatic increase size of volume 'excmbs2FAB06Data' by 10485760 kbytes done. Thu Mar 24 16:04:56 CET [netappfa1: scsitarget.lun.noSpace:error]: LUN '/vol/excmbs2FAB01Data/excmbs2FAB01Data' has run out of space.

Looking for details on NOW I've found no docs on this issue (just one regarding rws issues) and sincerely I cannot understand the reasons of this "out of space" messages. I've other LUNs configured exactly in the same manner without issues.

Any idea?

Dott. Giacomo Milazzo [cid:image001.jpg@01CBEA40.041913F0] Technical Account Manager Sinergy SpA Filiale di Roma * 00198. viale Regina Margherita, 269 ' (+39) 3406001045 0644245272 7 (+39) 0226922048 * Giacomo.Milazzo@Sinergy.it