Avago Technologies Cache Protection for RAID Controller Cards User Manual
Page 133
Avago Technologies
- 133 -
Cache Backup Products for MegaRAID SAS+SATA RAID Controllers User Guide
May 2015
Chapter 4: Battery Backup Unit and CacheVault Specifications
Specifications for the BBU Models
Charge Circuitry Card
Yes
LSIiBBU06 – Yes
LSIiBBU07 – Yes
LSIiBBU08 – Yes
LSIiBBU09 – Yes
LSIiTBBU03 – Yes. On MiniDIMM module.
Memory Technology
LSIiBBU01 - DDR1 SDRAM (2.5 V), DDR2 SDRAM
(1.8 V)
LSIiBBU05 - DDR2 SDRAM (1.8 V)
DDR2 SDRAM (1.8 V)
LSIiBBU08 – DDR2, DDR3
LSIiBBU09 – DDR3
Battery Charge Time
a
~4 hours
~4 hours
Socket Type
NA
LSIiBBU06 – NA
LSIiBBU07 – NA
LSIiBBU08 – NA
LSIiBBU09 – NA
LSIiTBBU03 - MiniDIMM, 244 pin
Module Support
LSIiBBU01 – DDR1, DDR2
LSIiBBU05 – DDR2
LSIiBBU08 – DDR2
LSIiBBU09 – DDR3
Cache Memory Size
Supported
N/A
128 MB to 512 MB
Memory Bus Speed
N/A
667 MHz
Memory Bus Width
Maximum 72-bit
LSIiBBU06 – 40-bit
LSIiBBU07 – 72-bit
LSIiTBBU03 – 72-bit
Error Correcting
Capability (ECC)
NA
LSIiBBU06 – NA
LSIiBBU07 – NA
LSIiTBBU03 – Supported
Auxiliary Power
LSIiBBU01 – No
LSIiBBU05 – Yes
b
LSIiBBU06 – Yes
b
LSIiBBU07 – Yes
b
LSIiTBBU03 – No
a. To increase the life of a battery, the battery is not fully charged. Band Gap charging keeps the maximum battery charge
within a band comfortably above the time requirement instead of keeping the battery charged to the maximum level.
However, when a learn cycle is required, the battery is fully charged because a learn cycle starts only once the battery is fully
charged.
b. These battery products have the ability to detect the presence of an external auxiliary power source. Circuitry on this
product automatically chooses auxiliary power to maintain cache contents, deferring battery discharge until auxiliary
power is removed or exhausted. Presence of an auxiliary power source thus increases the overall DRT ratings in
page
Table 16 Specifications for the BBU Models (Continued)
Specification
LSIiBBU01,
LSIiBBU05
LSIiBBU06, LSIiBBU07, LSIiBBU08, LSIiBBU09,
LSIiTBBU03