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4549821101887
HP 875238-B21 Smart Storage Battery
4549821101887

HP 875238-B21 Smart Storage Battery

Best price now

$221.00at AmazonChecked Nov 12

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Price facts

  • Last seen at $221.00 at Amazon on Nov 12.

Our take on the HP 875238-B21 Smart Storage Battery

The HP 875238-B21 is a 12 W lithium-ion smart storage battery for HP ProLiant servers. It keeps the RAID controller's cache backed up so cached writes survive a power loss, and unlike a supercapacitor it holds that charge for years without maintenance. It is a service part, not an upgrade: it fits specific ProLiant Gen9 and Gen10 models and does nothing for a server whose controller does not take it. Buyers should confirm the exact server and controller compatibility before ordering, since the part is sold as a replacement for a failed or aging battery.

Best forReplacing a failed or aging cache battery in a supported ProLiant serverKeeping RAID controller write cache enabled after power lossMaintaining a server that must stay in service rather than be replacedIT staff doing scheduled maintenance on Gen9 and Gen10 ProLiant hardware
Pros
  • Lithium-ion design holds backup charge far longer than older battery packs
  • Keeps the Smart Array controller's write-back cache active, so write performance does not drop to write-through
  • Genuine HP part with the correct connector and mounting for supported servers
  • Low 12 W rating draws little power and adds little heat
  • Simple swap for a failed battery during routine maintenance
Cons
  • Fits only specific HP ProLiant models and Smart Array controllers
  • Lithium-ion cells still age and eventually need replacing again
  • No benefit on servers that use a supercapacitor-based cache module
  • Genuine part costs more than third-party equivalents
  • Compatibility must be checked carefully; the wrong part will not work

HP 875238-B21 Smart Storage Battery prices at every store

  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $221.00+ $38.30 shippingChecked Nov 12
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HP 875238-B21 Smart Storage Battery price history

Lowest price we've seen: $221.00 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.

About the HP 875238-B21 Smart Storage Battery

The HP 875238-B21 is a Smart Storage Battery. It is a 12-watt lithium-ion (Li-Ion) battery.

Model
875238-B21
Power
12 watts
Battery type
Lithium-ion (Li-Ion)

Questions and answers

What does this battery do in a server?
It backs up the Smart Array RAID controller's write cache. If power fails, the cached data is preserved instead of lost, and the controller can keep write-back caching enabled.
Which servers does it fit?
It is made for specific HP ProLiant Gen9 and Gen10 servers with compatible Smart Array controllers. Check your server model and controller part number against HP's compatibility list before buying.
Is it a replacement or an upgrade?
It is a replacement part. It restores the cache backup function of a supported controller; it does not add capacity or speed to a server that already has a working battery.
How long does it last?
HP rates these lithium-ion packs for several years of service, but the cells age with use and heat. Replace it when the controller reports a failed or degraded battery.
Does it need any setup?
No configuration is needed. After fitting it, the controller detects the battery and re-enables write-back caching once it is charged.
Where is the HP 875238-B21 Smart Storage Battery cheapest?
At Amazon, for $221.00, as of our latest check.