My theory: 1. Assuming you install the OS on a new drive, the boot/OS drive is in 4k blocks by default. You can probably pre-NTFS-format the drive in another machine with larger or smaller blocks, but you may create other issues by doing so.
2. Exchange writes to the database in 4k pages. Numerous Q docs mention this. Formatting the drive in 4k blocks may have a beneficial effect. 3. Best as I can tell, the transaction logs, which are 5mb each, are written to transaction by transaction. Use performance monitor or other tools to figure out what your average transaction size is (this assumes you have a system in place already to monitor), and make the block size the next size up from that (assuming your average transaction is not above 64k). This is just my theory . . . -----Original Message----- From: Marc Mearns [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 20, 2002 6:39 AM To: Exchange Discussions Subject: Block Size User Group We are using Exchange 2000 SP2 NT 2000 SP2 Can someone please point me to a document that will give me definitive answers to my questions below or can respond with positive answers: 1. What should the block size be for the Transaction logs (assuming that I have placed then on a different disk volume) 2. What should the block size be for the database taking into consideration that you have edb and stm files on the same volume. 3. What should the block size be for the operating system. 4. Can you please give an explanation as to why you would use the recommended block size for the above 3 questions. 5. Can anyone recommend a good TechNet article that covers this topic. Note I have looked on TechNet but have not really found anything concrete and on the user group archives. Regards Marc Mearns Mobile - 07775-630508 Office - 020 7695 0286 ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager ( [EMAIL PROTECTED] ). The format of address is: [EMAIL PROTECTED] This footnote also confirms that this email message has been swept by MAILsweeper for the presence of computer viruses. J Sainsbury plc (185647 England) Sainsbury's Supermarkets Limited (3261722 England) Registered Offices: 33 Holborn London EC1N 2HT ********************************************************************** _________________________________________________________________ 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]
