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March 14th, 2008 00:00
CX300 and MS Exchange performance issue.
Hi, all.
Well, we have run into a performance issue. The datastore of our Exchange 2003 has grown to some 180Gb. When the datastore grew, we initialle followed Microsofts recommendations and split the DB's onto two different volumes, but when we then later implemented Replication Manager, we had to consolidate back to one volume in order to get the setup qualified by EMC. Now comes the tricky bit: We only have room for one RAID1_0 RAID Group on the SAN with the current setup and as the Exchange had to share this space with another server, when the SAN was implemented, the Exhchange could not be allocated the necessary space as one coherent block, but was instead extended as a MetaLUN. Now some users claim that the Exchange has become really sluggish - but as not all users respond to problems like this, I am not 100% that it's general.
Now to my question: Is it to be expected that a RAID0_1 MetaLun performs so bad that the users will actually notice when the Exchange datastore reaches this size???
Well, we have run into a performance issue. The datastore of our Exchange 2003 has grown to some 180Gb. When the datastore grew, we initialle followed Microsofts recommendations and split the DB's onto two different volumes, but when we then later implemented Replication Manager, we had to consolidate back to one volume in order to get the setup qualified by EMC. Now comes the tricky bit: We only have room for one RAID1_0 RAID Group on the SAN with the current setup and as the Exchange had to share this space with another server, when the SAN was implemented, the Exhchange could not be allocated the necessary space as one coherent block, but was instead extended as a MetaLUN. Now some users claim that the Exchange has become really sluggish - but as not all users respond to problems like this, I am not 100% that it's general.
Now to my question: Is it to be expected that a RAID0_1 MetaLun performs so bad that the users will actually notice when the Exchange datastore reaches this size???
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