Disk matrix

2 communication channels (redundancy)

1 communication (half-duplex channel)

• Model: 3PARA-ST1111
• 24 x 2,5“
• SAS 6Gb

• 6Gps SAS
• H800 controler with large disks support

!!! MD3000 has integrated RAID controller.

• Do not use it with PERC 6e or similar.
• Use simple SAS5E or SAS6E HBA adapter

MD3000 vs MD1000:

• the same enclosure.
• MD3000 is a base module, contains EMM with raid support (AMP01-RSIM).
• MD3000i is a base enclosure like above but EMM supports two ethernet ports for iSCSI and one SAS expansion port.
  • seen as virtual device for dumb HBA
  • redundant connections (dual path)
  • 512 MB cache mirrored in each EMM
  • RAID is performed inside enclosure, so multiple device access is not consuming bandwidth on 3Gbps SAS port.
• MD1000 is expansion module, contains simple dumb pass through EMMs (AMP01-SIM)

MD1000 MD3000

• Enables mixing SAS and SATA drives in a single enclosure
• 15 drives backplane.
• Enclosure modes:
  • unified mode for direct connectivity to 15 hard drives
  • split mode with dual EMMs providing a direct connectivity to drives 0 though 6 and a separate direct connectivity to drives 7 though 14.
    • Possible bandwidth increase with soft raid using 2 x 3Gbps cabling
    • Daisy chaining is not supported in split mode
• Old 3Gbps SAS enclosure
• To be use with PERC5e and PERC6e. 32 bit addressing limits disks to 2TB.
• Specification capacity 15 x 2TB max.
• People reports that MD1000 backplane supports 3TB drives max.

• SAS/SATA support:
  • Interposer card required for SATA drives when mixind SATA and SAS. Interposer “emulates” SAS interface for SATA drive.
  • One guy confirms that SATA drives works without interposer cards.
  • There is label on disk caddy “SAS” or “SATAu”
    • SATAu caddy has interposer mounted, and disck is mounted a bit shifted to front to make space for interposer card

Hints: http://www.jebriggs.com/blog/2009/12/md1000-and-md3000-redundancy-matrix/

At least one EMM must be installed (in primary left EMM bay).

• (R) - RAID controller ? with 512MB ram ?
• one or two (multihost) IN ports (multiple standards, depends on product number)
• one SAS OUT port to next enclosure
• one mangement ethernet port
  • default IPs: 192.168.128.101 and 192.168.128.102
• one service port (6 pin mini-DIN - for factory use only)

Part number:

• M999D,59V6C,6706C,GY794 - Single host one SAS IN

• 0P2GW4, MW736, CM669, MW726, X2R63, P809D, - 2x iSCSI IN ethernet ports

• 0P2GW4, 0CM670 2x SAS IN (dual host) ports

• One SAS port IN
• One SAS port OUT to chain to next matrix

Part numbers: CK614 TH262 HM240 JT517 - SAS/SATA