====== Disk matrix ======

===== SAS =====

2 communication channels (redundancy)

===== SATA =====

1 communication (half-duplex channel)

===== HPE M6510 =====
  * Model: 3PARA-ST1111
  * 24 x 2,5"
  * SAS 6Gb


===== Dell PowerVault MD1200 =====
  * 6Gps SAS
  * H800 controler with large disks support
  * 
===== Dell PowerVault MD3000/MD1000 =====

**!!! 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)


[[https://www1.la.dell.com/lc/en/corp/Storage/pvaul_md1000/pd.aspx?refid=pvaul_md1000&s=corp|MD1000]]
[[https://www.dell.com/support/home/en-la/product-support/product/powervault-md3000/docs|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/]]


==== Enclosure Management Module (EMM) ====

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


=== AMP01-RSIM ===
  * (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
{{:hw:server:pasted:20210408-121052.png}}

  * 0P2GW4, MW736, CM669, MW726, X2R63, P809D,  - 2x iSCSI IN ethernet ports
{{:hw:server:pasted:20210408-120139.png}}


  *  0P2GW4, 0CM670 2x SAS IN (dual host) ports
{{:hw:server:pasted:20210408-120211.png}}

=== AMP01-SIM ===
  * One SAS port ''IN''
  * One SAS port ''OUT'' to chain to next matrix
Part numbers: 
CK614
TH262
HM240
JT517 - SAS/SATA
{{:hw:server:pasted:20210408-115417.png}}