EMC clarion. Raid 5 --Kevinm M, WLKMMAS, UCC+WCA, And Beyond What are you on about mate?
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Andrey Fyodorov Sent: Wednesday, September 11, 2002 3:30 PM To: Exchange Discussions Subject: RE: Slow performance Is it RAID10? -----Original Message----- From: Kevin Miller [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 11, 2002 6:28 PM To: Exchange Discussions Subject: RE: Slow performance I just bought a SAN with 20 72 gig disks in . --Kevinm M, WLKMMAS, UCC+WCA, And Beyond What are you on about mate? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Andrey Fyodorov Sent: Wednesday, September 11, 2002 3:25 PM To: Exchange Discussions Subject: RE: Slow performance I am serious. I remember reading a white paper about Hosted Exchange and they wrote about that. -----Original Message----- From: Chinnery Paul [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 11, 2002 1:09 PM To: Exchange Discussions Subject: RE: Slow performance Are you sure about that or are you referring to MS Disk Manager and RAID5. Many SANS have luns set up for RAID on 36 or even 72 gig or larger drives. -----Original Message----- From: Andrey Fyodorov [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 11, 2002 1:05 PM To: Exchange Discussions Subject: RE: Slow performance Isn't there a white paper from MS that does not recommend building RAID5 with drives larger than 18GB> -----Original Message----- From: Todd Raymond [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 11, 2002 12:54 PM To: Exchange Discussions Subject: RE: Slow performance Are you referring to the array controller or the HGS80 controller? If it is a raid controller then, no you don't have to CHANGE it regularly - just charge it...when the time comes for a charge the system will inform you. You then initiate the charging process, and while it's charging the cache will be disabled. Also, Raid 5 on the SAN? I have seen serious performance drops using large raid 5 sets with a san. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Chris Scharff Sent: Wednesday, September 11, 2002 9:40 AM To: Exchange Discussions Subject: RE: Slow performance A consensus? Probably no. But I'd tend to agree that if the controller has a battery[1], it's OK to have it on. [1] Those need to be changed regularly.. If this is news to you, you should have the cache disabled. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, September 11, 2002 11:05 AM > To: Exchange Discussions > Subject: RE: Slow performance > > > Is there a concensus on this? > > > -----Original Message----- > From: Andrey Fyodorov [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, September 11, 2002 7:12 AM > To: Exchange Discussions > Subject: RE: Slow performance > > > I always thought that write-back cache should be always turned off, > whether it has battery or not. > > -----Original Message----- > From: Edgington, Jeff [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 6:29 PM > To: Exchange Discussions > Subject: RE: Slow performance > > > hrm... possibly you have write cache disabled... MS only recommends > that this is enabled when the cache on the controller has a battery, > but it does sound like this might be the case. > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 5:18 PM > To: Exchange Discussions > Subject: RE: Slow performance > > > Don't do diskkeeper against your store. The rest of your disk stats > look to be OK. Maybe someone else can give you better advice about > what perfmon items to look for to help track down the issue. > > > -----Original Message----- > From: Varghese, Wilson [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 2:55 PM > To: Exchange Discussions > Subject: RE: Slow performance > > > The store is on a 135gig raid 5 partition.. 64gigs is used with 70.7 > gigs free.. both pub and priv are on this drive. > The drives are brand new drives and the database is also new. > We just migrated the users over to this server about four > weeks ago. I have not run diskkeeper on it though. > > Ram = 1.5 gigs.. page file is 2gigs on the C drive. > > Wilson > > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 2:43 PM > To: Exchange Discussions > Subject: RE: Slow performance > > What kind of shape is your drive in? Have you run diskkeeper on it to > check for fragmentation problems, and/or could you be running short of > space? How does your page file compare to your RAM? > > David > > -----Original Message----- > From: Varghese, Wilson [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 1:03 PM > To: Exchange Discussions > Subject: RE: Slow performance > > > Thanks. I ran perfmon but it seems to show that the HDD is being > heavily used. There is a lot of information in the calendars and > quite a few people use it heavily. I'll keep poking around, this just > gets so frustrating when everyone is screaming in your ear that "email > is down". > > > Wilson > > > -----Original Message----- > From: Gonzalez, Alex [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 11:59 AM > To: Exchange Discussions > Subject: RE: Slow performance > > We have the same problem but we have narrowed it down to a network > issue. Run perfmon on the interface and check the kb's. Our server > was running at like 15% but the nic was running at like 80 and killing > the box. > > > -----Original Message----- > From: Tener, Richard [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 2:51 PM > To: Exchange Discussions > Subject: RE: Slow performance > > How much Ram do you have? Also is there a ton of info in your calander > that people access at the same time? > > -----Original Message----- > From: Varghese, Wilson [mailto:[EMAIL PROTECTED]] > Sent: Monday, September 09, 2002 2:45 PM > To: Exchange Discussions > Subject: Slow performance > > > Exch 2k sp2 on win2k sp2 machine (with 150 users) The machine is a > Compaq DL380 hooked up to a Compaq SAN. The store drives are 5*32 gig > (Raid 5) and the log and index files are on a mirrored 32 gig > partition. > > > Calendar and folder switching is very slow. Takes about 45 seconds to > switch to a different folder or to access the calendar. Dismissing a > calendar event can lock up outlook for several minutes. > > The log files and indexes are on separate drives but anything else I > can do to speed this up a bit? > > If you can point me in the right direction, it would be very helpful. > > Thanks, > Wilson > > > > > > > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: 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