IBM 400GB 1.8" SATA MLC EP 49Y6124 Manuel D’Utilisation
Codes de produits
49Y6124
IBM SATA 1.8-inch and 2.5-inch MLC Enterprise SSDs for IBM System x
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Features
Industry standard 1.8-inch or 2.5-inch form factors
Support for standard 2.5-inch drive bay (2.5-inch SSDs) or eXFlash drive bay (1.8-inch SSDs) or SSD
drive bay (1.8-inch SSDs) on selected System x, IBM iDataPlex®, IBM BladeCenter® and IBM Flex
System™ servers
System™ servers
Utilizes industry leading 24 nm MLC
Cost-effective enterprise-grade MLC (eMLC) NAND technology
MLC SATA drive with high read and write performance to fulfill client needs in the enterprise space
High endurance, with up to six PB of total bytes written (TBW) to withstand applications with intensive
read-write workloads
Energy saving, with as little as 2.8 - 4.6 watt power consumption per drive
Absence of moving parts to reduce potential failure points in the server
Native command queueing (NCQ) with a queue depth of 32
S.M.A.R.T. support
Advanced Encrypting Standard (AES) 256-bit encryption
Enterprise data path protection
55 bits per 512-byte sector ECC/EDC (BCH)
Static wear leveling evenly distributes data across the drive
Bad block management replaces failed blocks with new ones from the spare pool
Performance throttling to ensure the lifetime expectation is met
Power and thermal throttling to extend the life of the drive
Data retention management to ensure availability and integrity of stored data
Minimal write amplification for efficient flash utilization and extended life time
The key difference between Enterprise SSDs and Enterprise Value SSDs is their endurance (or life
expectancy). SSDs have a huge but finite number of program/erase (P/E) cycles, which affects how long
they can perform write operations and thus their life expectancy. Enterprise SSDs have significantly better
endurance but higher cost/IOPS ratio compared to Enterprise Value SSDs. SSD write endurance is
typically measured by the number of program/erase cycles that the drive can incur over its lifetime, listed
as TBW in the device specification.
expectancy). SSDs have a huge but finite number of program/erase (P/E) cycles, which affects how long
they can perform write operations and thus their life expectancy. Enterprise SSDs have significantly better
endurance but higher cost/IOPS ratio compared to Enterprise Value SSDs. SSD write endurance is
typically measured by the number of program/erase cycles that the drive can incur over its lifetime, listed
as TBW in the device specification.
For example, with IBM 400 GB SATA 1.8-inch MLC Enterprise SSD, the entire 400 GB can be fully
re-written up to eight times per day (more than 3 TB writes per day) to meet the five-year lifetime
expectation of the drive, while the Enterprise Value SSD can only sustain up to 40 GB writes per day (75
times less) to provide the same five-year lifetime.
re-written up to eight times per day (more than 3 TB writes per day) to meet the five-year lifetime
expectation of the drive, while the Enterprise Value SSD can only sustain up to 40 GB writes per day (75
times less) to provide the same five-year lifetime.