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Welcome to SCSI Stuff
The Source for All of Your IT Needs. 

Featured Categories
DELL PC & Workstation
DELL PC & Workstation

DELL PowerEdge Servers
 

DELL PowerVault Storage
DELL PowerEdge R720 - 3 year Dell warranty
  Dual E5-2640v2 2.0 Ghz eight core 96 Gb 3.5" x 8 backplane 3 x 300 15K 3.5" H710  - $4482

DELL PowerEdge R720xd - 3 year Dell warranty

  Dual E5-2640v2 2.0 Ghz eight core 96 Gb 3.5" x 12 backplane 3 x 300 15K 3.5" H710  - $4882
 
Dual E5-2630 2.2 Ghz six core 96 Gb 3.5" x 12 backplane 12 x 300 15K 3.5" H710  - $4692

DELL PowerEdge R710

  Dual X5570 2.93 Ghz quad core 96 Gb 3.5" x 6 backplane 2 x 146 15K 3.5" SAS - $1749
  Dual X5570 2.93 Ghz quad core 48 Gb 3.5" x 6 backplane 2 x 146 15K 3.5" SAS - $1199
  Dual L5639 2.13 Ghz 6 core 48 Gb 3.5" x 6 backplane 2 x 146 15K 3.5" SAS - $1199
  Each system has:  SAS 6ir, dual 870 watt power supplies.  iDRAC6 express, DVD.  Large quantities are available.
  Dell tags on each system.  No remaining Dell warranty. 
  30 day warranty with free ground shipping ( continental US only) call 1 888 712-0717!!!!      


DELL PowerEdge R620
  Dual E5-2603 quad core 32 Gb 2 x 300 10K H310 -  $2092
  Dual E5-2603 quad core 32 Gb 3 x 300 10K H310 -  $2449
   System components:  Dual 495 watt power supplies, iDRAC7 express

1 year warranty with free ground shipping ( continental US only) call 1 888 712-0717 for this one!!!!      

 

Scsistuff Tech tip #1: 

  MD1000s with SATA drives are experiencing drives falling off line ( timing out) due to the incorrect type of SATA drives installed. The issue is not related to the backplane, raid controller, EMM, or cabling.  In a nutshell the non enterprise drive has a very long time out period in relation to the raid controller.  When a drive experiences an issue caused by a command issued by the raid controller the drive goes into a very long time out period ( relative to the the speed of the raid controller) and does not respond to repeated request by the controller.  The controller thinks the drive is offline and marks the drive as offline.  By the time the SATA drive is ready the raid controller has marked that drive as failed and brings the spare drive online ( rebuild) if so configured.  Reseating the drive has no effect since the raid controller has marked the drive as failed.

98% of the generic 6 Gb/sec SATA or SATA SSD drives are not compatible with any Dell raid controller.  If you have to use SATA drive test various 3 Gb/sec SATA drive to eliminate the falling off line issue. Remember the drives may still fall off line up to 6 months after installation ( hence a long test period is needed).  SATA SSD drives are plagued with the same problem.  You must use a Dell enterprise SATA drive with the wagon wheel logo which ensures enterprise compatibility.   Scsistuff no longer sells SATA drives in the MD1000 due to this issue.

Fix:  Use Dell enterprise SATA drives or SATA SSD drives which are not prone to the timing out issue or use SAS drives.
PS.  The MD1200 or MD1220 is not authorized to use SATA drives.
 

Scsistuff Tech tip #2 ( June 15, 2013)
  Memory pricing - definitely on the rise.  16Gb server memory has risen by 20% over the past two months.  8Gb memory is up by 70%.  Lots of speculation as to why.

Scsistuff Tech tip #3 ( June 30, 2013)
  R810/R910 QDP errors.   Occurs when one of the four CPUs is unable to communicate with the three processors.  The only way to find a bad CPU is testing an unkown cpu with three known good processors.

 

Scsistuff Tech tip #4 ( Oct 20, 2013)
  Memory pricing - still on the the rise.  16Gb server memory has risen by 50% over the past four months.  8Gb memory is up by 90%.

Scsistuff Tech tip #5 

   Using your own hard drives in Dell servers can be made easier if you use the following quidelines.
   Scsistuff has lots of experience with drive retailers selling rebranded / off brand drives which never reliably work in a RAID array.
      Use only tested Dell enterprise hard drives ( test with Dell diagnostics). 
          Non Dell SATA or SATA SSD drives will eventually fail.  The drives will fall off line after one day to one year and will not reconnect. 
          Non enterprise SATA (including SATA SSD) drives will always fail after an undetermined time period.
          Run the Dell diagnostics on the hard drives prior to use.  Bad sectors equate to a failed confidence test.  The Dell confidence test is particular difficult to pass on older hard drives.
          Hard drives which seem to work OK individually may cause problems when used within a RAID array.  ( indicated by a drive activity light which will remain on long after the other lights extinguish). 
 

Scsistuff Tech tip #6
   Never remove a drive from a functioning array unless you are absolutely sure you are pulling the correct drive.  Drive controllers begin numbering drives with the number zero ( 1 is not the same as drive zero).  Drive 1 is the second drive in the array and not the first drive.  If in doubt label your drives with tape. 
   Example of a bad decision that results in a unrecoverable RAID array.
      12 bay drive array with a bad drive.  Drive 1 is reported as failed.  Yellow activity light on drive 1 is blinking.  Hot swap drive is in the process of rebuilding the array.  User pulls drive 0 out and replaces the drive.  You now have two failed drives in a RAID 5 array.  The raid array is has failed.  Customer calls and reports the issue but is unsure of which drive was removed from the array ( was it drive 0 or drive 1?)  After a week of tech support user consults notes and figures out the problem.  By then we have initialized the good drive( with valid data) and there is no hope of recovery.  Good news was he backed up the array prior to making the phone call.  Always label your drives before pulling them out of the array.