Also the SASir card is limited to Raid 0 and Raid 1, it will not do any other raid levels. You have to move to the Perc SAS/SATA combo raid cards for that.
-----Original Message----- From: Ken Schaefer [mailto:k...@adopenstatic.com] Sent: Thursday, May 20, 2010 3:21 AM To: NT System Admin Issues Subject: RE: Dell PowerEdge 840 SATA? Poweredge 840 is a low end server right? And the SAS 5/IR has no restrictions on using non-Dell SATA II disks (as I've had that cr*ppy card before) Cheers Ken -----Original Message----- From: David Lum [mailto:david....@nwea.org] Sent: Wednesday, 19 May 2010 11:49 PM To: NT System Admin Issues Subject: RE: Dell PowerEdge 840 SATA? Thanks Ben, good info. "special" = some configuration that means non-Dell sourced drives will not work in said server. Dave -----Original Message----- From: Ben Scott [mailto:mailvor...@gmail.com] Sent: Wednesday, May 19, 2010 8:35 AM To: NT System Admin Issues Subject: Re: Dell PowerEdge 840 SATA? On Wed, May 19, 2010 at 9:27 AM, David Lum <david....@nwea.org> wrote: > IS there anything special about Dell-supplied SATA drives? Define "special". The HDA (hard disk assembly) and PCB (printed circuit board) are almost certainly the same as you would get if you bought a similar spec'ed drive from Wal-Mart. Some Dell drives have firmware which identifies themselves as "Dell", thus allowing them to work with Dell RAID controllers which refuse anything else. Some "enterprise" hard disk drives have tweaked firmware, supposedly to "optimize" them for "enterprise usage". Exactly how much, if any, benefit there is to such tweaks is a subject of considerable debate. Firmware tweaks *can* make a difference. Examples: One of the reported problems in the infamous IBM "DeathStar" debacle was that the drives would idle the heads in a single track. Under typical home luser usage patterns, that wasn't a problem. For a PC left on all the time but largely idle, though, it could lead to wear on that one track. The fix was to tweak the firmware to occasionally move the actuator arm, even when idle. Some HDD models are marked for "media" use, like in DVRs. What they do is tweak the firmware to quickly give up on a read/write error. Typical hard drives will keep retrying, often for several seconds. For a Word document, that's what you want, but for streaming media, it's more important to keep the stream streaming. A single lost block will be a barely noticeable glitch in the audio or picture. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
