how do i upgrade my raid?

Hi

If it has 4x200GB drives I doubt it's a G5 XServe. G4 XServes came with 4 drive bays:

http://www.google.co.uk/imgres?q=G4+XServe&num=10&hl=en&safe=active&tbm=isch&tbn id=Tx_BQfSMbHQXpM:&imgrefurl=http://is.wikipedia.org/wiki/Mynd:Xserve_G4.jpg&doc id=Ge7tiMPbBXszxM&imgurl=http://upload.wikimedia.org/wikipedia/commons/a/a1/Xser ve_G4.jpg&w=1296&h=194&ei=1I5ZUM_FEKiw0QWxnoF4&zoom=1&iact=rc&dur=2&sig=11435170 9907505489238&page=1&tbnh=30&tbnw=198&start=0&ndsp=24&ved=1t:429,r:3,s:0,i:82&tx =125&ty=10&biw=1404&bih=866

G5 and Intel XServes came with 3 drive bays:

http://www.google.co.uk/imgres?q=G5+XServe&hl=en&safe=active&tbm=isch&tbnid=mUtn JPStUKFbYM:&imgrefurl=http://mac.sillydog.org/archives/000526.php&docid=y23nkcJQ 8uUdSM&imgurl=http://mac.sillydog.org/archives/pic/xserve20050104.gif&w=317&h=13 6&ei=845ZUJvzLKSm0QXwtYCACA&zoom=1&iact=hc&vpx=909&vpy=654&dur=499&hovh=91&hovw= 212&tx=182&ty=36&sig=114351709907505489238&page=2&tbnh=91&tbnw=212&start=24&ndsp =30&ved=1t:429,r:22,s:24,i:220&biw=1404&bih=866

If it is the G4 XServe with 4 drive bays I very much doubt (a) it will support 1TB drives natively and (b) whether 1TB ATA/IDE were ever made and actually available?

I'm not in a position to search the web at the moment but I'm fairly certain there are still some 500GB IDE Drives available that may or may not work? You may want to read this Apple KB:

http://support.apple.com/kb/HT1219?viewlocale=en_US&locale=en_US

If they do your next problem is how to update your current RAID configuration easily with no data loss and as little down time as possible. First thing would be to source the drives and prior to upgrading having a full and complete backup of everything that's important. You should be doing this anyway.

What RAID configuration(s) do you have?

HTH?

Tony

Hi

"The XSERVE G5 has a separate SCSI RAID Array with 14 bays of which 4 are occupied giving a total of 800 gb storage."

That sounds like an XServe RAID Unit? Does it look like this:

http://www.google.co.uk/imgres?q=XServe+RAID&num=10&hl=en&tbm=isch&tbnid=-wl73Ct layTBlM:&imgrefurl=http://en.wikipedia.org/wiki/File:Xserve_RAID.jpg&docid=9pxry pAvxoLK-M&imgurl=http://upload.wikimedia.org/wikipedia/commons/0/06/Xserve_RAID. jpg&w=1296&h=416&ei=vS5aUMm-C4TG0QWCnYGgBA&zoom=1&iact=hc&vpx=127&vpy=201&dur=36 4&hovh=95&hovw=296&tx=249&ty=64&sig=114351709907505489238&page=1&tbnh=62&tbnw=19 4&start=0&ndsp=23&ved=1t:429,r:0,s:0,i:73&biw=1402&bih=855

If it is the one above then it's not a SCSI device. It will be connected to the XServe via Fibre Channel.

To answer your original question it would make more sense if you expanded the XServe RAID unit. You can still purchase additional ADMs on eBay:

http://www.ebay.com/sch/i.html?_nkw=xserve+raid

Which may be your best bet?

HTH?

Tony

hi - we have 500 and 750 drives available and ADM's all original Apple if required