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Conference iosg::all-in-1_v30

Title:	OLD ALL-IN-1 (tm) Support Conference
Notice:	Closed - See Note 4331.l to move to IOSG::ALL-IN-1
Moderator:	IOSG::PYE

Created:	Thu Jan 30 1992
Last Modified:	Tue Jan 23 1996
Last Successful Update:	Fri Jun 06 1997
Number of topics:	4343
Total number of notes:	18308

4097.0. "Using Larger Solid State Disks" by ANGLIN::ROGERS (Sometimes you just gotta play hurt) Wed Apr 20 1994 23:34

    Are there any updates to recommendations of what ALL-IN-1 files to put
    on solid state disk, considering that the capacity of these devices is
    now over 600MB?
    
    It seems the old recommendations were made with the ESE20 in mind, with
    a maximum of 120MB.
    
    Are there now data files or other files which would be candidates?

T.R	Title	User	Personal Name	Date	Lines
4097.1	ASPG(??) Performance Guide?	IOSG::PYE	Graham - ALL-IN-1 Sorcerer's Apprentice	`Fri May 06 1994 17:33`	4
	Doesn't the performance guide (mentioned elsewhere in this conference) offer advice on this? If not, then ask its authors! Graham
4097.2		MRKTNG::SLATER	Marc, ASE Performance Group	`Sat May 07 1994 02:27`	22
	The authors have been very busy getting ready for DECUS and trying to understand the performance of ALL-IN-1 on Alpha AXP systems (<== blatant tease). More to say on that later in a separate note. On the subject of larger ESE devices: One must consider that today's rotating media is getting bigger AND faster AND cheaper. There were two main reasons in the past for moving files onto ESEs. The first was if performance was limited by the access time to a traditional disk. The second was if you could combine the I/O from several traditional disks onto an ESE and save money by eliminating the rotating media. Over the last few years, the average access time to rotating media has reduced by about 50% (30ms down to about 15ms). Second, the cost of rotating media has dropped considerably as well (from about $10+/MB to about $1/MB). Without doing a full (unfunded, Graham this is a hint) scalability study, I'd reckon that it is cheaper to upgrade to modern rotating media than it is to collapse I/O onto an ESE. My times have changed. MS