Avago Technologies MegaRAID SAS 8204ELP - Manual (Page 31)

Hardware Specifications 1-17
Copyright © 2007 by LSI Corporation. All rights reserved.
Data transfer rate Up to 3 Gbits/s per PHY
Bus PCI Express 1.0a
Cache function Write-back, write-through, adaptive read ahead,
non-read ahead, read ahead, cache I/O, direct I/O
Multiple virtual disks or
arrays per controller Up to 40 virtual disks per controller or per logical array
(this value is dependent on the firmware)
Online capacity
expansion Yes
Dedicated and global
hot spares Yes
Hot-swap devices
supported Yes
Non-disk devices
supported Yes
Mixed capacity
physical disks
supported Yes
Number of external
connectors MegaRAID SAS 8880EM2 – Two (x4 SAS Port)
SFF-8088 Mini SAS 4x connectors
MegaRAID SAS 8888ELP – Two (x4 SAS Port)
SFF-8088 Mini SAS 4x connectors
Number of internal
connectors
• MegaRAID SAS 8704ELP RAID controller – One (x4
SAS Port) Mini SAS 4i connector
• MegaRAID SAS 8708ELP RAID controller – Two (x4
SAS Port) Mini SAS 4i connectors
• MegaRAID SAS 8708EM2 RAID controller – Two (x4
SAS Port) SFF-8087 Mini SAS 4i connectors
• MegaRAID SAS 8888ELP RAID controller – Two (x4
SAS Port) SFF-8087 Mini SAS 4i connectors
Hardware exclusive
OR (XOR) assistance Yes
Direct I/O Yes
Architecture Fusion-MPT
Table 1.2 MegaRAID 1078-based SAS RAID Controller
Comparisons (Cont.)
Specification
MegaRAID SAS 8704ELP, MegaRAID SAS 8708ELP,
MegaRAID SAS 8708EM2, and MegaRAID SAS
8880EM2, and MegaRAID SAS 8888ELP RAID
Controllers