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: 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: 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: 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: 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: 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: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
